Console.WriteLine Method
Important
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Writes the specified data, followed by the current line terminator, to the standard output stream.
WriteLine(String, Object, Object) |
Writes the text representation of the specified objects, followed by the current line terminator, to the standard output stream using the specified format information. |
WriteLine(String) |
Writes the specified string value, followed by the current line terminator, to the standard output stream. |
WriteLine(Char[], Int32, Int32) |
Writes the specified subarray of Unicode characters, followed by the current line terminator, to the standard output stream. |
WriteLine(String, ReadOnlySpan<Object>) |
Writes the text representation of the specified span of objects, followed by the current line terminator, to the standard output stream using the specified format information. |
WriteLine(String, Object[]) |
Writes the text representation of the specified array of objects, followed by the current line terminator, to the standard output stream using the specified format information. |
WriteLine(String, Object) |
Writes the text representation of the specified object, followed by the current line terminator, to the standard output stream using the specified format information. |
WriteLine(UInt64) |
Writes the text representation of the specified 64-bit unsigned integer value, followed by the current line terminator, to the standard output stream. |
WriteLine(UInt32) |
Writes the text representation of the specified 32-bit unsigned integer value, followed by the current line terminator, to the standard output stream. |
WriteLine(Single) |
Writes the text representation of the specified single-precision floating-point value, followed by the current line terminator, to the standard output stream. |
WriteLine(Double) |
Writes the text representation of the specified double-precision floating-point value, followed by the current line terminator, to the standard output stream. |
WriteLine(Int64) |
Writes the text representation of the specified 64-bit signed integer value, followed by the current line terminator, to the standard output stream. |
WriteLine(Int32) |
Writes the text representation of the specified 32-bit signed integer value, followed by the current line terminator, to the standard output stream. |
WriteLine(Decimal) |
Writes the text representation of the specified Decimal value, followed by the current line terminator, to the standard output stream. |
WriteLine(Char[]) |
Writes the specified array of Unicode characters, followed by the current line terminator, to the standard output stream. |
WriteLine(Char) |
Writes the specified Unicode character, followed by the current line terminator, value to the standard output stream. |
WriteLine(Boolean) |
Writes the text representation of the specified Boolean value, followed by the current line terminator, to the standard output stream. |
WriteLine() |
Writes the current line terminator to the standard output stream. |
WriteLine(String, Object, Object, Object) |
Writes the text representation of the specified objects, followed by the current line terminator, to the standard output stream using the specified format information. |
WriteLine(Object) |
Writes the text representation of the specified object, followed by the current line terminator, to the standard output stream. |
WriteLine(String, Object, Object, Object, Object) |
Writes the text representation of the specified objects and variable-length parameter list, followed by the current line terminator, to the standard output stream using the specified format information. |
The default line terminator is a string whose value is a carriage return followed by a line feed ("\r\n" in C#, or vbCrLf
in Visual Basic). You can change the line terminator by setting the TextWriter.NewLine property of the Out property to another string.
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified objects, followed by the current line terminator, to the standard output stream using the specified format information.
public:
static void WriteLine(System::String ^ format, System::Object ^ arg0, System::Object ^ arg1);
public static void WriteLine (string format, object? arg0, object? arg1);
public static void WriteLine (string format, object arg0, object arg1);
static member WriteLine : string * obj * obj -> unit
Public Shared Sub WriteLine (format As String, arg0 As Object, arg1 As Object)
Parameters
- format
- String
A composite format string.
- arg0
- Object
The first object to write using format
.
- arg1
- Object
The second object to write using format
.
Exceptions
An I/O error occurred.
format
is null
.
The format specification in format
is invalid.
Examples
The following example demonstrates the standard formatting specifiers for numbers, dates, and enumerations.
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
using namespace System;
public enum class Color {Yellow = 1, Blue, Green};
int main()
{
DateTime thisDate = DateTime::Now;
Console::Clear();
// Format a negative integer or floating-point number in various ways.
Console::WriteLine("Standard Numeric Format Specifiers");
Console::WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f);
// Format the current date in various ways.
Console::WriteLine("Standard DateTime Format Specifiers");
Console::WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate);
// Format a Color enumeration value in various ways.
Console::WriteLine("Standard Enumeration Format Specifiers");
Console::WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color::Green);
};
/*
This code example produces the following results:
Standard Numeric Format Specifiers
(C) Currency: . . . . . . . . ($123.00)
(D) Decimal:. . . . . . . . . -123
(E) Scientific: . . . . . . . -1.234500E+002
(F) Fixed point:. . . . . . . -123.45
(G) General:. . . . . . . . . -123
(default):. . . . . . . . -123 (default = 'G')
(N) Number: . . . . . . . . . -123.00
(P) Percent:. . . . . . . . . -12,345.00 %
(R) Round-trip: . . . . . . . -123.45
(X) Hexadecimal:. . . . . . . FFFFFF85
Standard DateTime Format Specifiers
(d) Short date: . . . . . . . 6/26/2004
(D) Long date:. . . . . . . . Saturday, June 26, 2004
(t) Short time: . . . . . . . 8:11 PM
(T) Long time:. . . . . . . . 8:11:04 PM
(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
(g) General date/short time:. 6/26/2004 8:11 PM
(G) General date/long time: . 6/26/2004 8:11:04 PM
(default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
(M) Month:. . . . . . . . . . June 26
(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
(Y) Year: . . . . . . . . . . June, 2004
Standard Enumeration Format Specifiers
(G) General:. . . . . . . . . Green
(default):. . . . . . . . Green (default = 'G')
(F) Flags:. . . . . . . . . . Green (flags or integer)
(D) Decimal number: . . . . . 3
(X) Hexadecimal:. . . . . . . 00000003
*/
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
using System;
class Sample
{
enum Color {Yellow = 1, Blue, Green};
static DateTime thisDate = DateTime.Now;
public static void Main()
{
Console.Clear();
// Format a negative integer or floating-point number in various ways.
Console.WriteLine("Standard Numeric Format Specifiers");
Console.WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f);
// Format the current date in various ways.
Console.WriteLine("Standard DateTime Format Specifiers");
Console.WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate);
// Format a Color enumeration value in various ways.
Console.WriteLine("Standard Enumeration Format Specifiers");
Console.WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color.Green);
}
}
/*
This code example produces the following results:
Standard Numeric Format Specifiers
(C) Currency: . . . . . . . . ($123.00)
(D) Decimal:. . . . . . . . . -123
(E) Scientific: . . . . . . . -1.234500E+002
(F) Fixed point:. . . . . . . -123.45
(G) General:. . . . . . . . . -123
(default):. . . . . . . . -123 (default = 'G')
(N) Number: . . . . . . . . . -123.00
(P) Percent:. . . . . . . . . -12,345.00 %
(R) Round-trip: . . . . . . . -123.45
(X) Hexadecimal:. . . . . . . FFFFFF85
Standard DateTime Format Specifiers
(d) Short date: . . . . . . . 6/26/2004
(D) Long date:. . . . . . . . Saturday, June 26, 2004
(t) Short time: . . . . . . . 8:11 PM
(T) Long time:. . . . . . . . 8:11:04 PM
(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
(g) General date/short time:. 6/26/2004 8:11 PM
(G) General date/long time: . 6/26/2004 8:11:04 PM
(default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
(M) Month:. . . . . . . . . . June 26
(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
(Y) Year: . . . . . . . . . . June, 2004
Standard Enumeration Format Specifiers
(G) General:. . . . . . . . . Green
(default):. . . . . . . . Green (default = 'G')
(F) Flags:. . . . . . . . . . Green (flags or integer)
(D) Decimal number: . . . . . 3
(X) Hexadecimal:. . . . . . . 00000003
*/
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
open System
type Color =
| Yellow = 1
| Blue = 2
| Green = 3
let thisDate = DateTime.Now
Console.Clear()
// Format a negative integer or floating-point number in various ways.
Console.WriteLine "Standard Numeric Format Specifiers"
Console.WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f)
// Format the current date in various ways.
Console.WriteLine "Standard DateTime Format Specifiers"
Console.WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate)
// Format a Color enumeration value in various ways.
Console.WriteLine "Standard Enumeration Format Specifiers"
Console.WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color.Green)
// This code example produces the following results:
//
// Standard Numeric Format Specifiers
// (C) Currency: . . . . . . . . ($123.00)
// (D) Decimal:. . . . . . . . . -123
// (E) Scientific: . . . . . . . -1.234500E+002
// (F) Fixed point:. . . . . . . -123.45
// (G) General:. . . . . . . . . -123
// (default):. . . . . . . . -123 (default = 'G')
// (N) Number: . . . . . . . . . -123.00
// (P) Percent:. . . . . . . . . -12,345.00 %
// (R) Round-trip: . . . . . . . -123.45
// (X) Hexadecimal:. . . . . . . FFFFFF85
//
// Standard DateTime Format Specifiers
// (d) Short date: . . . . . . . 6/26/2004
// (D) Long date:. . . . . . . . Saturday, June 26, 2004
// (t) Short time: . . . . . . . 8:11 PM
// (T) Long time:. . . . . . . . 8:11:04 PM
// (f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
// (F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
// (g) General date/short time:. 6/26/2004 8:11 PM
// (G) General date/long time: . 6/26/2004 8:11:04 PM
// (default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
// (M) Month:. . . . . . . . . . June 26
// (R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
// (s) Sortable: . . . . . . . . 2004-06-26T20:11:04
// (u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
// (U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
// (Y) Year: . . . . . . . . . . June, 2004
//
// Standard Enumeration Format Specifiers
// (G) General:. . . . . . . . . Green
// (default):. . . . . . . . Green (default = 'G')
// (F) Flags:. . . . . . . . . . Green (flags or integer)
// (D) Decimal number: . . . . . 3
// (X) Hexadecimal:. . . . . . . 00000003
' This code example demonstrates the Console.WriteLine() method.
' Formatting for this example uses the "en-US" culture.
Class Sample
Public Enum Color
Yellow = 1
Blue = 2
Green = 3
End Enum 'Color
Private Shared thisDate As DateTime = DateTime.Now
Public Shared Sub Main()
Console.Clear()
' Format a negative integer or floating-point number in various ways.
Console.WriteLine("Standard Numeric Format Specifiers")
Console.WriteLine("(C) Currency: . . . . . . . . {0:C}" & vbCrLf & _
"(D) Decimal:. . . . . . . . . {0:D}" & vbCrLf & _
"(E) Scientific: . . . . . . . {1:E}" & vbCrLf & _
"(F) Fixed point:. . . . . . . {1:F}" & vbCrLf & _
"(G) General:. . . . . . . . . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(N) Number: . . . . . . . . . {0:N}" & vbCrLf & _
"(P) Percent:. . . . . . . . . {1:P}" & vbCrLf & _
"(R) Round-trip: . . . . . . . {1:R}" & vbCrLf & _
"(X) Hexadecimal:. . . . . . . {0:X}" & vbCrLf, _
- 123, - 123.45F)
' Format the current date in various ways.
Console.WriteLine("Standard DateTime Format Specifiers")
Console.WriteLine("(d) Short date: . . . . . . . {0:d}" & vbCrLf & _
"(D) Long date:. . . . . . . . {0:D}" & vbCrLf & _
"(t) Short time: . . . . . . . {0:t}" & vbCrLf & _
"(T) Long time:. . . . . . . . {0:T}" & vbCrLf & _
"(f) Full date/short time: . . {0:f}" & vbCrLf & _
"(F) Full date/long time:. . . {0:F}" & vbCrLf & _
"(g) General date/short time:. {0:g}" & vbCrLf & _
"(G) General date/long time: . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(M) Month:. . . . . . . . . . {0:M}" & vbCrLf & _
"(R) RFC1123:. . . . . . . . . {0:R}" & vbCrLf & _
"(s) Sortable: . . . . . . . . {0:s}" & vbCrLf & _
"(u) Universal sortable: . . . {0:u} (invariant)" & vbCrLf & _
"(U) Universal full date/time: {0:U}" & vbCrLf & _
"(Y) Year: . . . . . . . . . . {0:Y}" & vbCrLf, _
thisDate)
' Format a Color enumeration value in various ways.
Console.WriteLine("Standard Enumeration Format Specifiers")
Console.WriteLine("(G) General:. . . . . . . . . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)" & vbCrLf & _
"(D) Decimal number: . . . . . {0:D}" & vbCrLf & _
"(X) Hexadecimal:. . . . . . . {0:X}" & vbCrLf, _
Color.Green)
End Sub
End Class
'
'This code example produces the following results:
'
'Standard Numeric Format Specifiers
'(C) Currency: . . . . . . . . ($123.00)
'(D) Decimal:. . . . . . . . . -123
'(E) Scientific: . . . . . . . -1.234500E+002
'(F) Fixed point:. . . . . . . -123.45
'(G) General:. . . . . . . . . -123
' (default):. . . . . . . . -123 (default = 'G')
'(N) Number: . . . . . . . . . -123.00
'(P) Percent:. . . . . . . . . -12,345.00 %
'(R) Round-trip: . . . . . . . -123.45
'(X) Hexadecimal:. . . . . . . FFFFFF85
'
'Standard DateTime Format Specifiers
'(d) Short date: . . . . . . . 6/26/2004
'(D) Long date:. . . . . . . . Saturday, June 26, 2004
'(t) Short time: . . . . . . . 8:11 PM
'(T) Long time:. . . . . . . . 8:11:04 PM
'(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
'(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
'(g) General date/short time:. 6/26/2004 8:11 PM
'(G) General date/long time: . 6/26/2004 8:11:04 PM
' (default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
'(M) Month:. . . . . . . . . . June 26
'(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
'(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
'(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
'(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
'(Y) Year: . . . . . . . . . . June, 2004
'
'Standard Enumeration Format Specifiers
'(G) General:. . . . . . . . . Green
' (default):. . . . . . . . Green (default = 'G')
'(F) Flags:. . . . . . . . . . Green (flags or integer)
'(D) Decimal number: . . . . . 3
'(X) Hexadecimal:. . . . . . . 00000003
'
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
This method uses the composite formatting feature of .NET to convert the value of an object to its text representation and embed that representation in a string. The resulting string is written to the output stream.
The format
parameter consists of zero or more runs of text intermixed with zero or more indexed placeholders, called format items, that correspond to an object in the parameter list of this method. The formatting process replaces each format item with the text representation of the value of the corresponding object.
The syntax of a format item is {
index[,
alignment][:
formatString]}
, which specifies a mandatory index, the optional length and alignment of the formatted text, and an optional string of format specifier characters that govern how the value of the corresponding object is formatted.
.NET provides extensive formatting support, which is described in greater detail in the following formatting topics.
For more information about the composite formatting feature supported by methods such as Format, AppendFormat, and some overloads of WriteLine, see Composite Formatting.
For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about date and time format specifiers, see Standard Date and Time Format Strings and Custom Date and Time Format Strings.
For more information about enumeration format specifiers, see Enumeration Format Strings.
For more information about formatting, see Formatting Types.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the specified string value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(System::String ^ value);
public static void WriteLine (string? value);
public static void WriteLine (string value);
static member WriteLine : string -> unit
Public Shared Sub WriteLine (value As String)
Parameters
- value
- String
The value to write.
Exceptions
An I/O error occurred.
Examples
The example changes the line terminator from its default value of "\r\n" or vbCrLf
to "\r\n\r\n" or vbCrLf
+ vbCrLf
. It then calls the WriteLine() and WriteLine(String) methods to display output to the console.
using namespace System;
void main()
{
array<String^>^ lines = gcnew array<String^> { "This is the first line.",
"This is the second line." };
// Output the lines using the default newline sequence.
Console::WriteLine("With the default new line characters:");
Console::WriteLine();
for each (String^ line in lines)
Console::WriteLine(line);
Console::WriteLine();
// Redefine the newline characters to double space.
Console::Out->NewLine = "\r\n\r\n";
// Output the lines using the new newline sequence.
Console::WriteLine("With redefined new line characters:");
Console::WriteLine();
for each (String^ line in lines)
Console::WriteLine(line);
}
// The example displays the following output:
// With the default new line characters:
//
// This is the first line.
// This is the second line.
//
// With redefined new line characters:
//
//
//
// This is the first line.
//
// This is the second line.
string[] lines = { "This is the first line.",
"This is the second line." };
// Output the lines using the default newline sequence.
Console.WriteLine("With the default new line characters:");
Console.WriteLine();
foreach (string line in lines)
Console.WriteLine(line);
Console.WriteLine();
// Redefine the newline characters to double space.
Console.Out.NewLine = "\r\n\r\n";
// Output the lines using the new newline sequence.
Console.WriteLine("With redefined new line characters:");
Console.WriteLine();
foreach (string line in lines)
Console.WriteLine(line);
// The example displays the following output:
// With the default new line characters:
//
// This is the first line.
// This is the second line.
//
// With redefined new line characters:
//
//
//
// This is the first line.
//
// This is the second line.
let lines =
[ "This is the first line."
"This is the second line." ]
// Output the lines using the default newline sequence.
Console.WriteLine "With the default new line characters:"
Console.WriteLine()
for line in lines do
Console.WriteLine line
Console.WriteLine()
// Redefine the newline characters to double space.
Console.Out.NewLine <- "\r\n\r\n"
// Output the lines using the new newline sequence.
Console.WriteLine "With redefined new line characters:"
Console.WriteLine()
for line in lines do
Console.WriteLine line
// The example displays the following output:
// With the default new line characters:
//
// This is the first line.
// This is the second line.
//
// With redefined new line characters:
//
//
//
// This is the first line.
//
// This is the second line.
Module Example
Public Sub Main()
Dim lines() As String = { "This is the first line.", _
"This is the second line." }
' Output the lines using the default newline sequence.
Console.WriteLine("With the default new line characters:")
Console.WriteLine()
For Each line As String In lines
Console.WriteLine(line)
Next
Console.WriteLine()
' Redefine the newline characters to double space.
Console.Out.NewLine = vbCrLf + vbCrLf
' Output the lines using the new newline sequence.
Console.WriteLine("With redefined new line characters:")
Console.WriteLine()
For Each line As String In lines
Console.WriteLine(line)
Next
End Sub
End Module
' The example displays the following output:
' With the default new line characters:
'
' This is the first line.
' This is the second line.
'
' With redefined new line characters:
'
'
'
' This is the first line.
'
' This is the second line.
Remarks
If value is null
, only the line terminator is written to the standard output stream.
For more information about the line terminator, see the Remarks section of the WriteLine() method.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the specified subarray of Unicode characters, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(cli::array <char> ^ buffer, int index, int count);
public static void WriteLine (char[] buffer, int index, int count);
static member WriteLine : char[] * int * int -> unit
Public Shared Sub WriteLine (buffer As Char(), index As Integer, count As Integer)
Parameters
- buffer
- Char[]
An array of Unicode characters.
- index
- Int32
The starting position in buffer
.
- count
- Int32
The number of characters to write.
Exceptions
buffer
is null
.
index
or count
is less than zero.
index
plus count
specify a position that is not within buffer
.
An I/O error occurred.
Remarks
This method writes count
characters starting at position index
of buffer
to the standard output stream.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
Writes the text representation of the specified span of objects, followed by the current line terminator, to the standard output stream using the specified format information.
public:
static void WriteLine(System::String ^ format, ReadOnlySpan<System::Object ^> arg);
public static void WriteLine (string format, scoped ReadOnlySpan<object?> arg);
static member WriteLine : string * ReadOnlySpan<obj> -> unit
Public Shared Sub WriteLine (format As String, arg As ReadOnlySpan(Of Object))
Parameters
- format
- String
A composite format string.
- arg
- ReadOnlySpan<Object>
A span of objects to write using format.
Applies to
.NET 9
Product | Versions |
---|---|
.NET | 9 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified array of objects, followed by the current line terminator, to the standard output stream using the specified format information.
public:
static void WriteLine(System::String ^ format, ... cli::array <System::Object ^> ^ arg);
public static void WriteLine (string format, params object?[]? arg);
public static void WriteLine (string format, params object[] arg);
static member WriteLine : string * obj[] -> unit
Public Shared Sub WriteLine (format As String, ParamArray arg As Object())
Parameters
- format
- String
A composite format string.
- arg
- Object[]
An array of objects to write using format
.
Exceptions
An I/O error occurred.
format
or arg
is null
.
The format specification in format
is invalid.
Examples
The following example demonstrates the standard formatting specifiers for numbers, dates, and enumerations.
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
using namespace System;
public enum class Color {Yellow = 1, Blue, Green};
int main()
{
DateTime thisDate = DateTime::Now;
Console::Clear();
// Format a negative integer or floating-point number in various ways.
Console::WriteLine("Standard Numeric Format Specifiers");
Console::WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f);
// Format the current date in various ways.
Console::WriteLine("Standard DateTime Format Specifiers");
Console::WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate);
// Format a Color enumeration value in various ways.
Console::WriteLine("Standard Enumeration Format Specifiers");
Console::WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color::Green);
};
/*
This code example produces the following results:
Standard Numeric Format Specifiers
(C) Currency: . . . . . . . . ($123.00)
(D) Decimal:. . . . . . . . . -123
(E) Scientific: . . . . . . . -1.234500E+002
(F) Fixed point:. . . . . . . -123.45
(G) General:. . . . . . . . . -123
(default):. . . . . . . . -123 (default = 'G')
(N) Number: . . . . . . . . . -123.00
(P) Percent:. . . . . . . . . -12,345.00 %
(R) Round-trip: . . . . . . . -123.45
(X) Hexadecimal:. . . . . . . FFFFFF85
Standard DateTime Format Specifiers
(d) Short date: . . . . . . . 6/26/2004
(D) Long date:. . . . . . . . Saturday, June 26, 2004
(t) Short time: . . . . . . . 8:11 PM
(T) Long time:. . . . . . . . 8:11:04 PM
(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
(g) General date/short time:. 6/26/2004 8:11 PM
(G) General date/long time: . 6/26/2004 8:11:04 PM
(default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
(M) Month:. . . . . . . . . . June 26
(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
(Y) Year: . . . . . . . . . . June, 2004
Standard Enumeration Format Specifiers
(G) General:. . . . . . . . . Green
(default):. . . . . . . . Green (default = 'G')
(F) Flags:. . . . . . . . . . Green (flags or integer)
(D) Decimal number: . . . . . 3
(X) Hexadecimal:. . . . . . . 00000003
*/
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
using System;
class Sample
{
enum Color {Yellow = 1, Blue, Green};
static DateTime thisDate = DateTime.Now;
public static void Main()
{
Console.Clear();
// Format a negative integer or floating-point number in various ways.
Console.WriteLine("Standard Numeric Format Specifiers");
Console.WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f);
// Format the current date in various ways.
Console.WriteLine("Standard DateTime Format Specifiers");
Console.WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate);
// Format a Color enumeration value in various ways.
Console.WriteLine("Standard Enumeration Format Specifiers");
Console.WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color.Green);
}
}
/*
This code example produces the following results:
Standard Numeric Format Specifiers
(C) Currency: . . . . . . . . ($123.00)
(D) Decimal:. . . . . . . . . -123
(E) Scientific: . . . . . . . -1.234500E+002
(F) Fixed point:. . . . . . . -123.45
(G) General:. . . . . . . . . -123
(default):. . . . . . . . -123 (default = 'G')
(N) Number: . . . . . . . . . -123.00
(P) Percent:. . . . . . . . . -12,345.00 %
(R) Round-trip: . . . . . . . -123.45
(X) Hexadecimal:. . . . . . . FFFFFF85
Standard DateTime Format Specifiers
(d) Short date: . . . . . . . 6/26/2004
(D) Long date:. . . . . . . . Saturday, June 26, 2004
(t) Short time: . . . . . . . 8:11 PM
(T) Long time:. . . . . . . . 8:11:04 PM
(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
(g) General date/short time:. 6/26/2004 8:11 PM
(G) General date/long time: . 6/26/2004 8:11:04 PM
(default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
(M) Month:. . . . . . . . . . June 26
(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
(Y) Year: . . . . . . . . . . June, 2004
Standard Enumeration Format Specifiers
(G) General:. . . . . . . . . Green
(default):. . . . . . . . Green (default = 'G')
(F) Flags:. . . . . . . . . . Green (flags or integer)
(D) Decimal number: . . . . . 3
(X) Hexadecimal:. . . . . . . 00000003
*/
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
open System
type Color =
| Yellow = 1
| Blue = 2
| Green = 3
let thisDate = DateTime.Now
Console.Clear()
// Format a negative integer or floating-point number in various ways.
Console.WriteLine "Standard Numeric Format Specifiers"
Console.WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f)
// Format the current date in various ways.
Console.WriteLine "Standard DateTime Format Specifiers"
Console.WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate)
// Format a Color enumeration value in various ways.
Console.WriteLine "Standard Enumeration Format Specifiers"
Console.WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color.Green)
// This code example produces the following results:
//
// Standard Numeric Format Specifiers
// (C) Currency: . . . . . . . . ($123.00)
// (D) Decimal:. . . . . . . . . -123
// (E) Scientific: . . . . . . . -1.234500E+002
// (F) Fixed point:. . . . . . . -123.45
// (G) General:. . . . . . . . . -123
// (default):. . . . . . . . -123 (default = 'G')
// (N) Number: . . . . . . . . . -123.00
// (P) Percent:. . . . . . . . . -12,345.00 %
// (R) Round-trip: . . . . . . . -123.45
// (X) Hexadecimal:. . . . . . . FFFFFF85
//
// Standard DateTime Format Specifiers
// (d) Short date: . . . . . . . 6/26/2004
// (D) Long date:. . . . . . . . Saturday, June 26, 2004
// (t) Short time: . . . . . . . 8:11 PM
// (T) Long time:. . . . . . . . 8:11:04 PM
// (f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
// (F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
// (g) General date/short time:. 6/26/2004 8:11 PM
// (G) General date/long time: . 6/26/2004 8:11:04 PM
// (default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
// (M) Month:. . . . . . . . . . June 26
// (R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
// (s) Sortable: . . . . . . . . 2004-06-26T20:11:04
// (u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
// (U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
// (Y) Year: . . . . . . . . . . June, 2004
//
// Standard Enumeration Format Specifiers
// (G) General:. . . . . . . . . Green
// (default):. . . . . . . . Green (default = 'G')
// (F) Flags:. . . . . . . . . . Green (flags or integer)
// (D) Decimal number: . . . . . 3
// (X) Hexadecimal:. . . . . . . 00000003
' This code example demonstrates the Console.WriteLine() method.
' Formatting for this example uses the "en-US" culture.
Class Sample
Public Enum Color
Yellow = 1
Blue = 2
Green = 3
End Enum 'Color
Private Shared thisDate As DateTime = DateTime.Now
Public Shared Sub Main()
Console.Clear()
' Format a negative integer or floating-point number in various ways.
Console.WriteLine("Standard Numeric Format Specifiers")
Console.WriteLine("(C) Currency: . . . . . . . . {0:C}" & vbCrLf & _
"(D) Decimal:. . . . . . . . . {0:D}" & vbCrLf & _
"(E) Scientific: . . . . . . . {1:E}" & vbCrLf & _
"(F) Fixed point:. . . . . . . {1:F}" & vbCrLf & _
"(G) General:. . . . . . . . . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(N) Number: . . . . . . . . . {0:N}" & vbCrLf & _
"(P) Percent:. . . . . . . . . {1:P}" & vbCrLf & _
"(R) Round-trip: . . . . . . . {1:R}" & vbCrLf & _
"(X) Hexadecimal:. . . . . . . {0:X}" & vbCrLf, _
- 123, - 123.45F)
' Format the current date in various ways.
Console.WriteLine("Standard DateTime Format Specifiers")
Console.WriteLine("(d) Short date: . . . . . . . {0:d}" & vbCrLf & _
"(D) Long date:. . . . . . . . {0:D}" & vbCrLf & _
"(t) Short time: . . . . . . . {0:t}" & vbCrLf & _
"(T) Long time:. . . . . . . . {0:T}" & vbCrLf & _
"(f) Full date/short time: . . {0:f}" & vbCrLf & _
"(F) Full date/long time:. . . {0:F}" & vbCrLf & _
"(g) General date/short time:. {0:g}" & vbCrLf & _
"(G) General date/long time: . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(M) Month:. . . . . . . . . . {0:M}" & vbCrLf & _
"(R) RFC1123:. . . . . . . . . {0:R}" & vbCrLf & _
"(s) Sortable: . . . . . . . . {0:s}" & vbCrLf & _
"(u) Universal sortable: . . . {0:u} (invariant)" & vbCrLf & _
"(U) Universal full date/time: {0:U}" & vbCrLf & _
"(Y) Year: . . . . . . . . . . {0:Y}" & vbCrLf, _
thisDate)
' Format a Color enumeration value in various ways.
Console.WriteLine("Standard Enumeration Format Specifiers")
Console.WriteLine("(G) General:. . . . . . . . . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)" & vbCrLf & _
"(D) Decimal number: . . . . . {0:D}" & vbCrLf & _
"(X) Hexadecimal:. . . . . . . {0:X}" & vbCrLf, _
Color.Green)
End Sub
End Class
'
'This code example produces the following results:
'
'Standard Numeric Format Specifiers
'(C) Currency: . . . . . . . . ($123.00)
'(D) Decimal:. . . . . . . . . -123
'(E) Scientific: . . . . . . . -1.234500E+002
'(F) Fixed point:. . . . . . . -123.45
'(G) General:. . . . . . . . . -123
' (default):. . . . . . . . -123 (default = 'G')
'(N) Number: . . . . . . . . . -123.00
'(P) Percent:. . . . . . . . . -12,345.00 %
'(R) Round-trip: . . . . . . . -123.45
'(X) Hexadecimal:. . . . . . . FFFFFF85
'
'Standard DateTime Format Specifiers
'(d) Short date: . . . . . . . 6/26/2004
'(D) Long date:. . . . . . . . Saturday, June 26, 2004
'(t) Short time: . . . . . . . 8:11 PM
'(T) Long time:. . . . . . . . 8:11:04 PM
'(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
'(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
'(g) General date/short time:. 6/26/2004 8:11 PM
'(G) General date/long time: . 6/26/2004 8:11:04 PM
' (default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
'(M) Month:. . . . . . . . . . June 26
'(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
'(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
'(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
'(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
'(Y) Year: . . . . . . . . . . June, 2004
'
'Standard Enumeration Format Specifiers
'(G) General:. . . . . . . . . Green
' (default):. . . . . . . . Green (default = 'G')
'(F) Flags:. . . . . . . . . . Green (flags or integer)
'(D) Decimal number: . . . . . 3
'(X) Hexadecimal:. . . . . . . 00000003
'
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
This method uses the composite formatting feature of .NET to convert the value of an object to its text representation and embed that representation in a string. The resulting string is written to the output stream.
The format
parameter consists of zero or more runs of text intermixed with zero or more indexed placeholders, called format items, that correspond to an object in the parameter list of this method. The formatting process replaces each format item with the text representation of the value of the corresponding object.
The syntax of a format item is {
index[,
alignment][:
formatString]}
, which specifies a mandatory index, the optional length and alignment of the formatted text, and an optional string of format specifier characters that govern how the value of the corresponding object is formatted.
.NET provides extensive formatting support, which is described in greater detail in the following formatting topics.
For more information about the composite formatting feature supported by methods such as Format, AppendFormat, and some overloads of WriteLine, see Composite Formatting.
For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about date and time format specifiers, see Standard Date and Time Format Strings and Custom Date and Time Format Strings.
For more information about enumeration format specifiers, see Enumeration Format Strings.
For more information about formatting, see Formatting Types.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
Notes to Callers
This method is not called by C++ code. The C++ compiler resolves calls to System.Console.WriteLine that include a string and a list of four or more object parameters as a call to WriteLine(String, Object, Object, Object, Object). It resolves calls to System.Console.WriteLine that include a string and an object array as a call to WriteLine(String, Object).
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified object, followed by the current line terminator, to the standard output stream using the specified format information.
public:
static void WriteLine(System::String ^ format, System::Object ^ arg0);
public static void WriteLine (string format, object? arg0);
public static void WriteLine (string format, object arg0);
static member WriteLine : string * obj -> unit
Public Shared Sub WriteLine (format As String, arg0 As Object)
Parameters
- format
- String
A composite format string.
- arg0
- Object
An object to write using format
.
Exceptions
An I/O error occurred.
format
is null
.
The format specification in format
is invalid.
Examples
The following example calls the WriteLine(String, Object) method to display five randomly generated Boolean values.
Random rnd = new Random();
// Generate five random Boolean values.
for (int ctr = 1; ctr <= 5; ctr++) {
bool bln = rnd.Next(0, 2) == 1;
Console.WriteLine($"True or False: {bln}");
}
// The example displays an output similar to the following:
// True or False: False
// True or False: True
// True or False: False
// True or False: False
// True or False: True
let rnd = Random()
// Generate five random Boolean values.
for _ = 1 to 5 do
let bln = rnd.Next(0, 2) = 1
Console.WriteLine $"True or False: {bln}"
// The example displays an output similar to the following:
// True or False: False
// True or False: True
// True or False: False
// True or False: False
// True or False: True
Module Example
Public Sub Main()
Dim rnd As New Random()
' Generate five random Boolean values.
For ctr As Integer = 1 To 5
Dim bool As Boolean = Convert.ToBoolean(rnd.Next(0, 2))
Console.WriteLine("True or False: {0}", bool)
Next
End Sub
End Module
' The example displays the following output:
' True or False: False
' True or False: True
' True or False: False
' True or False: False
' True or False: True
The following example calls the WriteLine(String, Object) method to display the current date. Note that the format item in the format
argument uses the "D" standard date and time format string to display the date in the long date format of the current culture.
using System;
public class Example
{
public static void Main()
{
Console.WriteLine("Today's date: {0:D}", DateTime.Now);
}
}
// The example displays output like the following:
// Today's date: Monday, April 1, 2019
open System
Console.WriteLine $"Today's date: {DateTime.Now:D}"
// The example displays output like the following:
// Today's date: Tuesday, December 28, 2021
Module Example
Public Sub Main()
Console.WriteLine("Today's date: {0:D}", DateTime.Now)
End Sub
End Module
' The example displays output like the following:
' Today's date: Friday, April 1, 2016
Remarks
This method uses the composite formatting feature of .NET to convert the value of an object to its text representation and embed that representation in a string. The resulting string is written to the output stream.
The format
parameter consists of zero or more runs of text intermixed with zero or more indexed placeholders, called format items, that correspond to an object in the parameter list of this method. The formatting process replaces each format item with the text representation of the value of the corresponding object.
The syntax of a format item is {
index[,
alignment][:
formatString]}
, which specifies a mandatory index, the optional length and alignment of the formatted text, and an optional string of format specifier characters that govern how the value of the corresponding object is formatted.
.NET provides extensive formatting support, which is described in greater detail in the following formatting topics.
For more information about the composite formatting feature supported by methods such as Format, AppendFormat, and some overloads of WriteLine, see Composite Formatting.
For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about date and time format specifiers, see Standard Date and Time Format Strings and Custom Date and Time Format Strings.
For more information about enumeration format specifiers, see Enumeration Format Strings.
For more information about formatting, see Formatting Types.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Important
This API is not CLS-compliant.
Writes the text representation of the specified 64-bit unsigned integer value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(System::UInt64 value);
[System.CLSCompliant(false)]
public static void WriteLine (ulong value);
[<System.CLSCompliant(false)>]
static member WriteLine : uint64 -> unit
Public Shared Sub WriteLine (value As ULong)
Parameters
- value
- UInt64
The value to write.
- Attributes
Exceptions
An I/O error occurred.
Examples
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
The text representation of value
is produced by calling the UInt64.ToString method.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Important
This API is not CLS-compliant.
Writes the text representation of the specified 32-bit unsigned integer value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(System::UInt32 value);
[System.CLSCompliant(false)]
public static void WriteLine (uint value);
[<System.CLSCompliant(false)>]
static member WriteLine : uint32 -> unit
Public Shared Sub WriteLine (value As UInteger)
Parameters
- value
- UInt32
The value to write.
- Attributes
Exceptions
An I/O error occurred.
Examples
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
The text representation of value
is produced by calling the UInt32.ToString method.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified single-precision floating-point value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(float value);
public static void WriteLine (float value);
static member WriteLine : single -> unit
Public Shared Sub WriteLine (value As Single)
Parameters
- value
- Single
The value to write.
Exceptions
An I/O error occurred.
Examples
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
The text representation of value
is produced by calling the Single.ToString method.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified double-precision floating-point value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(double value);
public static void WriteLine (double value);
static member WriteLine : double -> unit
Public Shared Sub WriteLine (value As Double)
Parameters
- value
- Double
The value to write.
Exceptions
An I/O error occurred.
Examples
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
The text representation of value
is produced by calling the Double.ToString method.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified 64-bit signed integer value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(long value);
public static void WriteLine (long value);
static member WriteLine : int64 -> unit
Public Shared Sub WriteLine (value As Long)
Parameters
- value
- Int64
The value to write.
Exceptions
An I/O error occurred.
Examples
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
The text representation of value
is produced by calling the Int64.ToString method.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified 32-bit signed integer value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(int value);
public static void WriteLine (int value);
static member WriteLine : int -> unit
Public Shared Sub WriteLine (value As Integer)
Parameters
- value
- Int32
The value to write.
Exceptions
An I/O error occurred.
Examples
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
The text representation of value
is produced by calling the Int32.ToString method.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified Decimal value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(System::Decimal value);
public static void WriteLine (decimal value);
static member WriteLine : decimal -> unit
Public Shared Sub WriteLine (value As Decimal)
Parameters
- value
- Decimal
The value to write.
Exceptions
An I/O error occurred.
Examples
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
The text representation of value
is produced by calling the Decimal.ToString method.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the specified array of Unicode characters, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(cli::array <char> ^ buffer);
public static void WriteLine (char[]? buffer);
public static void WriteLine (char[] buffer);
static member WriteLine : char[] -> unit
Public Shared Sub WriteLine (buffer As Char())
Parameters
- buffer
- Char[]
A Unicode character array.
Exceptions
An I/O error occurred.
Remarks
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the specified Unicode character, followed by the current line terminator, value to the standard output stream.
public:
static void WriteLine(char value);
public static void WriteLine (char value);
static member WriteLine : char -> unit
Public Shared Sub WriteLine (value As Char)
Parameters
- value
- Char
The value to write.
Exceptions
An I/O error occurred.
Examples
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified Boolean value, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(bool value);
public static void WriteLine (bool value);
static member WriteLine : bool -> unit
Public Shared Sub WriteLine (value As Boolean)
Parameters
- value
- Boolean
The value to write.
Exceptions
An I/O error occurred.
Examples
The following example generates ten random integers and uses the Console.WriteLine(Boolean) method to indicate whether they are even.
using namespace System;
void main()
{
// Assign 10 random integers to an array.
Random^ rnd = gcnew Random();
array<Int32>^ numbers = gcnew array<Int32>(10);
for (int ctr = 0; ctr <= numbers->GetUpperBound(0); ctr++)
numbers[ctr] = rnd->Next();
// Determine whether the numbers are even or odd.
for each (Int32 number in numbers) {
bool even = (number % 2 == 0);
Console::WriteLine("Is {0} even:", number);
Console::WriteLine(even);
Console::WriteLine();
}
}
// Assign 10 random integers to an array.
Random rnd = new Random();
int[] numbers = new int[10];
for (int ctr = 0; ctr <= numbers.GetUpperBound(0); ctr++)
numbers[ctr] = rnd.Next();
// Determine whether the numbers are even or odd.
foreach (var number in numbers) {
bool even = (number % 2 == 0);
Console.WriteLine("Is {0} even:", number);
Console.WriteLine(even);
Console.WriteLine();
}
// Assign 10 random integers to an array.
let rnd = Random()
let numbers =
[ for _ = 0 to 9 do
rnd.Next()]
// Determine whether the numbers are even or odd.
for number in numbers do
let even = number % 2 = 0
Console.WriteLine $"Is {number} even:"
Console.WriteLine even
Console.WriteLine()
Module Example
Public Sub Main()
' Assign 10 random integers to an array.
Dim rnd As New Random()
Dim numbers(9) As Integer
For ctr As Integer = 0 To numbers.GetUpperBound(0)
numbers(ctr) = rnd.Next
Next
' Determine whether the numbers are even or odd.
For Each number In numbers
Dim even As Boolean = (number mod 2 = 0)
Console.WriteLine("Is {0} even:", number)
Console.WriteLine(even)
Console.WriteLine()
Next
End Sub
End Module
Remarks
The text representation of value
is produced by calling the Boolean.ToString method.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the current line terminator to the standard output stream.
public:
static void WriteLine();
public static void WriteLine ();
static member WriteLine : unit -> unit
Public Shared Sub WriteLine ()
Exceptions
An I/O error occurred.
Examples
The example changes the line terminator from its default value of "\r\n" or vbCrLf
to "\r\n\r\n" or vbCrLf
+ vbCrLf
. It then calls the WriteLine() and WriteLine(String) methods to display output to the console.
using namespace System;
void main()
{
array<String^>^ lines = gcnew array<String^> { "This is the first line.",
"This is the second line." };
// Output the lines using the default newline sequence.
Console::WriteLine("With the default new line characters:");
Console::WriteLine();
for each (String^ line in lines)
Console::WriteLine(line);
Console::WriteLine();
// Redefine the newline characters to double space.
Console::Out->NewLine = "\r\n\r\n";
// Output the lines using the new newline sequence.
Console::WriteLine("With redefined new line characters:");
Console::WriteLine();
for each (String^ line in lines)
Console::WriteLine(line);
}
// The example displays the following output:
// With the default new line characters:
//
// This is the first line.
// This is the second line.
//
// With redefined new line characters:
//
//
//
// This is the first line.
//
// This is the second line.
string[] lines = { "This is the first line.",
"This is the second line." };
// Output the lines using the default newline sequence.
Console.WriteLine("With the default new line characters:");
Console.WriteLine();
foreach (string line in lines)
Console.WriteLine(line);
Console.WriteLine();
// Redefine the newline characters to double space.
Console.Out.NewLine = "\r\n\r\n";
// Output the lines using the new newline sequence.
Console.WriteLine("With redefined new line characters:");
Console.WriteLine();
foreach (string line in lines)
Console.WriteLine(line);
// The example displays the following output:
// With the default new line characters:
//
// This is the first line.
// This is the second line.
//
// With redefined new line characters:
//
//
//
// This is the first line.
//
// This is the second line.
let lines =
[ "This is the first line."
"This is the second line." ]
// Output the lines using the default newline sequence.
Console.WriteLine "With the default new line characters:"
Console.WriteLine()
for line in lines do
Console.WriteLine line
Console.WriteLine()
// Redefine the newline characters to double space.
Console.Out.NewLine <- "\r\n\r\n"
// Output the lines using the new newline sequence.
Console.WriteLine "With redefined new line characters:"
Console.WriteLine()
for line in lines do
Console.WriteLine line
// The example displays the following output:
// With the default new line characters:
//
// This is the first line.
// This is the second line.
//
// With redefined new line characters:
//
//
//
// This is the first line.
//
// This is the second line.
Module Example
Public Sub Main()
Dim lines() As String = { "This is the first line.", _
"This is the second line." }
' Output the lines using the default newline sequence.
Console.WriteLine("With the default new line characters:")
Console.WriteLine()
For Each line As String In lines
Console.WriteLine(line)
Next
Console.WriteLine()
' Redefine the newline characters to double space.
Console.Out.NewLine = vbCrLf + vbCrLf
' Output the lines using the new newline sequence.
Console.WriteLine("With redefined new line characters:")
Console.WriteLine()
For Each line As String In lines
Console.WriteLine(line)
Next
End Sub
End Module
' The example displays the following output:
' With the default new line characters:
'
' This is the first line.
' This is the second line.
'
' With redefined new line characters:
'
'
'
' This is the first line.
'
' This is the second line.
Remarks
The default line terminator is a string whose value is a carriage return followed by a line feed ("\r\n" in C#, or vbCrLf
in Visual Basic). You can change the line terminator by setting the TextWriter.NewLine property of the Out property to another string. The example provides an illustration.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified objects, followed by the current line terminator, to the standard output stream using the specified format information.
public:
static void WriteLine(System::String ^ format, System::Object ^ arg0, System::Object ^ arg1, System::Object ^ arg2);
public static void WriteLine (string format, object? arg0, object? arg1, object? arg2);
public static void WriteLine (string format, object arg0, object arg1, object arg2);
static member WriteLine : string * obj * obj * obj -> unit
Public Shared Sub WriteLine (format As String, arg0 As Object, arg1 As Object, arg2 As Object)
Parameters
- format
- String
A composite format string.
- arg0
- Object
The first object to write using format
.
- arg1
- Object
The second object to write using format
.
- arg2
- Object
The third object to write using format
.
Exceptions
An I/O error occurred.
format
is null
.
The format specification in format
is invalid.
Examples
The following example demonstrates the standard formatting specifiers for numbers, dates, and enumerations.
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
using namespace System;
public enum class Color {Yellow = 1, Blue, Green};
int main()
{
DateTime thisDate = DateTime::Now;
Console::Clear();
// Format a negative integer or floating-point number in various ways.
Console::WriteLine("Standard Numeric Format Specifiers");
Console::WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f);
// Format the current date in various ways.
Console::WriteLine("Standard DateTime Format Specifiers");
Console::WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate);
// Format a Color enumeration value in various ways.
Console::WriteLine("Standard Enumeration Format Specifiers");
Console::WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color::Green);
};
/*
This code example produces the following results:
Standard Numeric Format Specifiers
(C) Currency: . . . . . . . . ($123.00)
(D) Decimal:. . . . . . . . . -123
(E) Scientific: . . . . . . . -1.234500E+002
(F) Fixed point:. . . . . . . -123.45
(G) General:. . . . . . . . . -123
(default):. . . . . . . . -123 (default = 'G')
(N) Number: . . . . . . . . . -123.00
(P) Percent:. . . . . . . . . -12,345.00 %
(R) Round-trip: . . . . . . . -123.45
(X) Hexadecimal:. . . . . . . FFFFFF85
Standard DateTime Format Specifiers
(d) Short date: . . . . . . . 6/26/2004
(D) Long date:. . . . . . . . Saturday, June 26, 2004
(t) Short time: . . . . . . . 8:11 PM
(T) Long time:. . . . . . . . 8:11:04 PM
(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
(g) General date/short time:. 6/26/2004 8:11 PM
(G) General date/long time: . 6/26/2004 8:11:04 PM
(default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
(M) Month:. . . . . . . . . . June 26
(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
(Y) Year: . . . . . . . . . . June, 2004
Standard Enumeration Format Specifiers
(G) General:. . . . . . . . . Green
(default):. . . . . . . . Green (default = 'G')
(F) Flags:. . . . . . . . . . Green (flags or integer)
(D) Decimal number: . . . . . 3
(X) Hexadecimal:. . . . . . . 00000003
*/
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
using System;
class Sample
{
enum Color {Yellow = 1, Blue, Green};
static DateTime thisDate = DateTime.Now;
public static void Main()
{
Console.Clear();
// Format a negative integer or floating-point number in various ways.
Console.WriteLine("Standard Numeric Format Specifiers");
Console.WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f);
// Format the current date in various ways.
Console.WriteLine("Standard DateTime Format Specifiers");
Console.WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate);
// Format a Color enumeration value in various ways.
Console.WriteLine("Standard Enumeration Format Specifiers");
Console.WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color.Green);
}
}
/*
This code example produces the following results:
Standard Numeric Format Specifiers
(C) Currency: . . . . . . . . ($123.00)
(D) Decimal:. . . . . . . . . -123
(E) Scientific: . . . . . . . -1.234500E+002
(F) Fixed point:. . . . . . . -123.45
(G) General:. . . . . . . . . -123
(default):. . . . . . . . -123 (default = 'G')
(N) Number: . . . . . . . . . -123.00
(P) Percent:. . . . . . . . . -12,345.00 %
(R) Round-trip: . . . . . . . -123.45
(X) Hexadecimal:. . . . . . . FFFFFF85
Standard DateTime Format Specifiers
(d) Short date: . . . . . . . 6/26/2004
(D) Long date:. . . . . . . . Saturday, June 26, 2004
(t) Short time: . . . . . . . 8:11 PM
(T) Long time:. . . . . . . . 8:11:04 PM
(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
(g) General date/short time:. 6/26/2004 8:11 PM
(G) General date/long time: . 6/26/2004 8:11:04 PM
(default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
(M) Month:. . . . . . . . . . June 26
(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
(Y) Year: . . . . . . . . . . June, 2004
Standard Enumeration Format Specifiers
(G) General:. . . . . . . . . Green
(default):. . . . . . . . Green (default = 'G')
(F) Flags:. . . . . . . . . . Green (flags or integer)
(D) Decimal number: . . . . . 3
(X) Hexadecimal:. . . . . . . 00000003
*/
// This code example demonstrates the Console.WriteLine() method.
// Formatting for this example uses the "en-US" culture.
open System
type Color =
| Yellow = 1
| Blue = 2
| Green = 3
let thisDate = DateTime.Now
Console.Clear()
// Format a negative integer or floating-point number in various ways.
Console.WriteLine "Standard Numeric Format Specifiers"
Console.WriteLine(
"(C) Currency: . . . . . . . . {0:C}\n" +
"(D) Decimal:. . . . . . . . . {0:D}\n" +
"(E) Scientific: . . . . . . . {1:E}\n" +
"(F) Fixed point:. . . . . . . {1:F}\n" +
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(N) Number: . . . . . . . . . {0:N}\n" +
"(P) Percent:. . . . . . . . . {1:P}\n" +
"(R) Round-trip: . . . . . . . {1:R}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
-123, -123.45f)
// Format the current date in various ways.
Console.WriteLine "Standard DateTime Format Specifiers"
Console.WriteLine(
"(d) Short date: . . . . . . . {0:d}\n" +
"(D) Long date:. . . . . . . . {0:D}\n" +
"(t) Short time: . . . . . . . {0:t}\n" +
"(T) Long time:. . . . . . . . {0:T}\n" +
"(f) Full date/short time: . . {0:f}\n" +
"(F) Full date/long time:. . . {0:F}\n" +
"(g) General date/short time:. {0:g}\n" +
"(G) General date/long time: . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(M) Month:. . . . . . . . . . {0:M}\n" +
"(R) RFC1123:. . . . . . . . . {0:R}\n" +
"(s) Sortable: . . . . . . . . {0:s}\n" +
"(u) Universal sortable: . . . {0:u} (invariant)\n" +
"(U) Universal full date/time: {0:U}\n" +
"(Y) Year: . . . . . . . . . . {0:Y}\n",
thisDate)
// Format a Color enumeration value in various ways.
Console.WriteLine "Standard Enumeration Format Specifiers"
Console.WriteLine(
"(G) General:. . . . . . . . . {0:G}\n" +
" (default):. . . . . . . . {0} (default = 'G')\n" +
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)\n" +
"(D) Decimal number: . . . . . {0:D}\n" +
"(X) Hexadecimal:. . . . . . . {0:X}\n",
Color.Green)
// This code example produces the following results:
//
// Standard Numeric Format Specifiers
// (C) Currency: . . . . . . . . ($123.00)
// (D) Decimal:. . . . . . . . . -123
// (E) Scientific: . . . . . . . -1.234500E+002
// (F) Fixed point:. . . . . . . -123.45
// (G) General:. . . . . . . . . -123
// (default):. . . . . . . . -123 (default = 'G')
// (N) Number: . . . . . . . . . -123.00
// (P) Percent:. . . . . . . . . -12,345.00 %
// (R) Round-trip: . . . . . . . -123.45
// (X) Hexadecimal:. . . . . . . FFFFFF85
//
// Standard DateTime Format Specifiers
// (d) Short date: . . . . . . . 6/26/2004
// (D) Long date:. . . . . . . . Saturday, June 26, 2004
// (t) Short time: . . . . . . . 8:11 PM
// (T) Long time:. . . . . . . . 8:11:04 PM
// (f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
// (F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
// (g) General date/short time:. 6/26/2004 8:11 PM
// (G) General date/long time: . 6/26/2004 8:11:04 PM
// (default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
// (M) Month:. . . . . . . . . . June 26
// (R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
// (s) Sortable: . . . . . . . . 2004-06-26T20:11:04
// (u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
// (U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
// (Y) Year: . . . . . . . . . . June, 2004
//
// Standard Enumeration Format Specifiers
// (G) General:. . . . . . . . . Green
// (default):. . . . . . . . Green (default = 'G')
// (F) Flags:. . . . . . . . . . Green (flags or integer)
// (D) Decimal number: . . . . . 3
// (X) Hexadecimal:. . . . . . . 00000003
' This code example demonstrates the Console.WriteLine() method.
' Formatting for this example uses the "en-US" culture.
Class Sample
Public Enum Color
Yellow = 1
Blue = 2
Green = 3
End Enum 'Color
Private Shared thisDate As DateTime = DateTime.Now
Public Shared Sub Main()
Console.Clear()
' Format a negative integer or floating-point number in various ways.
Console.WriteLine("Standard Numeric Format Specifiers")
Console.WriteLine("(C) Currency: . . . . . . . . {0:C}" & vbCrLf & _
"(D) Decimal:. . . . . . . . . {0:D}" & vbCrLf & _
"(E) Scientific: . . . . . . . {1:E}" & vbCrLf & _
"(F) Fixed point:. . . . . . . {1:F}" & vbCrLf & _
"(G) General:. . . . . . . . . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(N) Number: . . . . . . . . . {0:N}" & vbCrLf & _
"(P) Percent:. . . . . . . . . {1:P}" & vbCrLf & _
"(R) Round-trip: . . . . . . . {1:R}" & vbCrLf & _
"(X) Hexadecimal:. . . . . . . {0:X}" & vbCrLf, _
- 123, - 123.45F)
' Format the current date in various ways.
Console.WriteLine("Standard DateTime Format Specifiers")
Console.WriteLine("(d) Short date: . . . . . . . {0:d}" & vbCrLf & _
"(D) Long date:. . . . . . . . {0:D}" & vbCrLf & _
"(t) Short time: . . . . . . . {0:t}" & vbCrLf & _
"(T) Long time:. . . . . . . . {0:T}" & vbCrLf & _
"(f) Full date/short time: . . {0:f}" & vbCrLf & _
"(F) Full date/long time:. . . {0:F}" & vbCrLf & _
"(g) General date/short time:. {0:g}" & vbCrLf & _
"(G) General date/long time: . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(M) Month:. . . . . . . . . . {0:M}" & vbCrLf & _
"(R) RFC1123:. . . . . . . . . {0:R}" & vbCrLf & _
"(s) Sortable: . . . . . . . . {0:s}" & vbCrLf & _
"(u) Universal sortable: . . . {0:u} (invariant)" & vbCrLf & _
"(U) Universal full date/time: {0:U}" & vbCrLf & _
"(Y) Year: . . . . . . . . . . {0:Y}" & vbCrLf, _
thisDate)
' Format a Color enumeration value in various ways.
Console.WriteLine("Standard Enumeration Format Specifiers")
Console.WriteLine("(G) General:. . . . . . . . . {0:G}" & vbCrLf & _
" (default):. . . . . . . . {0} (default = 'G')" & vbCrLf & _
"(F) Flags:. . . . . . . . . . {0:F} (flags or integer)" & vbCrLf & _
"(D) Decimal number: . . . . . {0:D}" & vbCrLf & _
"(X) Hexadecimal:. . . . . . . {0:X}" & vbCrLf, _
Color.Green)
End Sub
End Class
'
'This code example produces the following results:
'
'Standard Numeric Format Specifiers
'(C) Currency: . . . . . . . . ($123.00)
'(D) Decimal:. . . . . . . . . -123
'(E) Scientific: . . . . . . . -1.234500E+002
'(F) Fixed point:. . . . . . . -123.45
'(G) General:. . . . . . . . . -123
' (default):. . . . . . . . -123 (default = 'G')
'(N) Number: . . . . . . . . . -123.00
'(P) Percent:. . . . . . . . . -12,345.00 %
'(R) Round-trip: . . . . . . . -123.45
'(X) Hexadecimal:. . . . . . . FFFFFF85
'
'Standard DateTime Format Specifiers
'(d) Short date: . . . . . . . 6/26/2004
'(D) Long date:. . . . . . . . Saturday, June 26, 2004
'(t) Short time: . . . . . . . 8:11 PM
'(T) Long time:. . . . . . . . 8:11:04 PM
'(f) Full date/short time: . . Saturday, June 26, 2004 8:11 PM
'(F) Full date/long time:. . . Saturday, June 26, 2004 8:11:04 PM
'(g) General date/short time:. 6/26/2004 8:11 PM
'(G) General date/long time: . 6/26/2004 8:11:04 PM
' (default):. . . . . . . . 6/26/2004 8:11:04 PM (default = 'G')
'(M) Month:. . . . . . . . . . June 26
'(R) RFC1123:. . . . . . . . . Sat, 26 Jun 2004 20:11:04 GMT
'(s) Sortable: . . . . . . . . 2004-06-26T20:11:04
'(u) Universal sortable: . . . 2004-06-26 20:11:04Z (invariant)
'(U) Universal full date/time: Sunday, June 27, 2004 3:11:04 AM
'(Y) Year: . . . . . . . . . . June, 2004
'
'Standard Enumeration Format Specifiers
'(G) General:. . . . . . . . . Green
' (default):. . . . . . . . Green (default = 'G')
'(F) Flags:. . . . . . . . . . Green (flags or integer)
'(D) Decimal number: . . . . . 3
'(X) Hexadecimal:. . . . . . . 00000003
'
The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.
using System;
public class TipCalculator
{
private const double tipRate = 0.18;
public static void Main(string[] args)
{
double billTotal;
if (args.Length == 0 || ! Double.TryParse(args[0], out billTotal))
{
Console.WriteLine("usage: TIPCALC total");
return;
}
double tip = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine($"Bill total:\t{billTotal,8:c}");
Console.WriteLine($"Tip total/rate:\t{tip,8:c} ({tipRate:p1})");
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine($"Grand total:\t{billTotal + tip,8:c}");
}
}
/*
>tipcalc 52.23
Bill total: $52.23
Tip total/rate: $9.40 (18.0 %)
------------------------
Grand total: $61.63
*/
open System
let tipRate = 0.18
let args = Environment.GetCommandLineArgs()[1..]
if args.Length = 0 then
Console.WriteLine "usage: TIPCALC total"
else
match Double.TryParse args[0] with
| true, billTotal ->
let tip = billTotal * tipRate
Console.WriteLine()
Console.WriteLine $"Bill total:\t{billTotal,8:c}"
Console.WriteLine $"Tip total/rate:\t{tip,8:c} ({tipRate:p1})"
Console.WriteLine("".PadRight(24, '-'))
Console.WriteLine $"Grand total:\t{billTotal + tip,8:c}"
| _ ->
Console.WriteLine "usage: TIPCALC total"
// >tipcalc 52.23
//
// Bill total: $52.23
// Tip total/rate: $9.40 (18.0 %)
// ------------------------
// Grand total: $61.63
Public Module TipCalculator
Private Const tipRate As Double = 0.18
Public Sub Main(args As String())
Dim billTotal As Double
If (args.Length = 0) OrElse (Not Double.TryParse(args(0), billTotal)) Then
Console.WriteLine("usage: TIPCALC total")
Return
End If
Dim tip As Double = billTotal * tipRate
Console.WriteLine()
Console.WriteLine($"Bill total:{vbTab}{billTotal,8:c}")
Console.WriteLine($"Tip total/rate:{vbTab}{tip,8:c} ({tipRate:p1})")
Console.WriteLine("".PadRight(24, "-"c))
Console.WriteLine($"Grand total:{vbTab}{billTotal + tip,8:c}")
End Sub
End Module
'Example Output:
'---------------
' >tipcalc 52.23
'
' Bill total: $52.23
' Tip total/rate: $9.40 (18.0 %)
' ------------------------
' Grand total: $61.63
Remarks
This method uses the composite formatting feature of .NET to convert the value of an object to its text representation and embed that representation in a string. The resulting string is written to the output stream.
The format
parameter consists of zero or more runs of text intermixed with zero or more indexed placeholders, called format items, that correspond to an object in the parameter list of this method. The formatting process replaces each format item with the text representation of the value of the corresponding object.
The syntax of a format item is {
index[,
alignment][:
formatString]}
, which specifies a mandatory index, the optional length and alignment of the formatted text, and an optional string of format specifier characters that govern how the value of the corresponding object is formatted.
.NET provides extensive formatting support, which is described in greater detail in the following formatting topics.
For more information about the composite formatting feature supported by methods such as Format, AppendFormat, and some overloads of WriteLine, see Composite Formatting.
For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about date and time format specifiers, see Standard Date and Time Format Strings and Custom Date and Time Format Strings.
For more information about enumeration format specifiers, see Enumeration Format Strings.
For more information about formatting, see Formatting Types.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
- Source:
- Console.cs
- Source:
- Console.cs
- Source:
- Console.cs
Writes the text representation of the specified object, followed by the current line terminator, to the standard output stream.
public:
static void WriteLine(System::Object ^ value);
public static void WriteLine (object? value);
public static void WriteLine (object value);
static member WriteLine : obj -> unit
Public Shared Sub WriteLine (value As Object)
Parameters
- value
- Object
The value to write.
Exceptions
An I/O error occurred.
Examples
The following example uses the WriteLine(Object) method to display each value in an object array to the console.
using namespace System;
void main()
{
array<Object^>^ values = { true, 12.632, 17908, "stringValue",
'a', (Decimal) 16907.32 };
for each (Object^ value in values)
Console::WriteLine(value);
}
// The example displays the following output:
// True
// 12.632
// 17908
// stringValue
// a
// 16907.32
Object[] values = { true, 12.632, 17908, "stringValue",
'a', 16907.32m };
foreach (var value in values)
Console.WriteLine(value);
// The example displays the following output:
// True
// 12.632
// 17908
// stringValue
// a
// 16907.32
let values: obj [] =
[| true; 12.632; 17908; "stringValue"; 'a'; 16907.32M |]
for value in values do
Console.WriteLine value
// The example displays the following output:
// True
// 12.632
// 17908
// stringValue
// a
// 16907.32
Module Example
Public Sub Main()
Dim values() As Object = { True, 12.632, 17908, "stringValue",
"a"c, 16907.32d }
For Each value In values
Console.WriteLine(value)
Next
End Sub
End Module
' The example displays the following output:
' True
' 12.632
' 17908
' stringValue
' a
' 16907.32
Remarks
If value
is null
, only the line terminator is written. Otherwise, the ToString
method of value
is called to produce its string representation, and the resulting string is written to the standard output stream.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
See also
Applies to
.NET 9 and other versions
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
Important
This API is not CLS-compliant.
Writes the text representation of the specified objects and variable-length parameter list, followed by the current line terminator, to the standard output stream using the specified format information.
public:
static void WriteLine(System::String ^ format, System::Object ^ arg0, System::Object ^ arg1, System::Object ^ arg2, System::Object ^ arg3);
[System.CLSCompliant(false)]
public static void WriteLine (string format, object arg0, object arg1, object arg2, object arg3);
[<System.CLSCompliant(false)>]
static member WriteLine : string * obj * obj * obj * obj -> unit
Public Shared Sub WriteLine (format As String, arg0 As Object, arg1 As Object, arg2 As Object, arg3 As Object)
Parameters
- format
- String
A composite format string.
- arg0
- Object
The first object to write using format
.
- arg1
- Object
The second object to write using format
.
- arg2
- Object
The third object to write using format
.
- arg3
- Object
The fourth object to write using format
.
- Attributes
Exceptions
An I/O error occurred.
format
is null
.
The format specification in format
is invalid.
Examples
The following example illustrates the use of variable arguments with the WriteLine(String, Object, Object, Object, Object) method. The method is called with a composite format string and five format items.
using namespace System;
int CountLetters(String^ value);
int CountWhitespace(String^ value);
void main()
{
String^ value = "This is a test string.";
Console::WriteLine("The string '{0}' consists of:" +
"{4}{1} characters{4}{2} letters{4}" +
"{3} white-space characters",
value, value->Length, CountLetters(value),
CountWhitespace(value), Environment::NewLine);
}
int CountLetters(String^ value)
{
int nLetters = 0;
for each (Char ch in value) {
if (Char::IsLetter(ch))
nLetters++;
}
return nLetters;
}
int CountWhitespace(String^ value)
{
int nWhitespace = 0;
for each (Char ch in value) {
if (Char::IsWhiteSpace(ch))
nWhitespace++;
}
return nWhitespace;
}
// The example displays the following output:
// The string 'This is a test string.' consists of:
// 22 characters
// 17 letters
// 4 white-space characters
Remarks
Note
This API is not CLS-compliant. The CLS-compliant alternative is Console.WriteLine(String, Object[]). The C# and Visual Basic compilers automatically resolve a call to this method as a call to Console.WriteLine(String, Object[]).
This method uses the composite formatting feature of .NET to convert the value of an object to its text representation and embed that representation in a string. The resulting string is written to the output stream.
The format
parameter consists of zero or more runs of text intermixed with zero or more indexed placeholders, called format items, that correspond to an object in the parameter list of this method. The formatting process replaces each format item with the text representation of the value of the corresponding object.
The syntax of a format item is {
index[,
alignment][:
formatString]}
, which specifies a mandatory index, the optional length and alignment of the formatted text, and an optional string of format specifier characters that govern how the value of the corresponding object is formatted.
.NET provides extensive formatting support, which is described in greater detail in the following formatting topics.
For more information about the composite formatting feature supported by methods such as Format, AppendFormat, and some overloads of WriteLine, see Composite Formatting.
For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about date and time format specifiers, see Standard Date and Time Format Strings and Custom Date and Time Format Strings.
For more information about enumeration format specifiers, see Enumeration Format Strings.
For more information about formatting, see Formatting Types.
For more information about the line terminator, see the Remarks section of the WriteLine method that takes no parameters.
Notes to Callers
This method is marked with the vararg
keyword, which means that it supports a variable number of parameters. The method can be called from Visual C++, but it cannot be called from C# or Visual Basic code. The C# and Visual Basic compilers resolve calls to WriteLine(String, Object, Object, Object, Object) as calls to WriteLine(String, Object[]).
See also
Applies to
.NET Framework 4.8.1 and other versions
Product | Versions |
---|---|
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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