Console.WriteLine 方法

參考

定義

命名空間:: System

組件:: System.Console.dll

組件:: mscorlib.dll

組件:: netstandard.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

將指定的資料 (後面接著目前的行結束字元) 寫入標準輸出資料流。

多載

WriteLine(String, Object, Object)	使用指定的格式資訊，將指定之物件的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(String)	將指定的字串值 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Char[], Int32, Int32)	將指定的 Unicode 字元子陣列 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(String, ReadOnlySpan<Object>)
WriteLine(String, Object[])	使用指定的格式資訊，將指定之物件陣列的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(String, Object)	使用指定的格式資訊，將指定之物件的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(UInt64)	將指定的 64 位元不帶正負號整數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(UInt32)	將指定的 32 位元不帶正負號整數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Single)	將指定的單精確度浮點數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Double)	將指定的雙精確度浮點數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Int64)	將指定的 64 位元帶正負號整數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Int32)	將指定的 32 位元帶正負號整數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Decimal)	將指定的 Decimal 值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Char[])	將指定的 Unicode 字元陣列 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Char)	將指定的 Unicode 字元 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Boolean)	將指定布林值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine()	將目前的行結束字元寫入標準輸出資料流。
WriteLine(String, Object, Object, Object)	使用指定的格式資訊，將指定之物件的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(Object)	將指定物件的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。
WriteLine(String, Object, Object, Object, Object)	使用指定的格式資訊，將指定之物件和可變長度參數清單的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

備註

默認行終止符是字串，其值為歸位字元，後面接著 C# 中的換行字元 (“\r\n” 或 vbCrLf Visual Basic) 。您可以將屬性的 Out 屬性設定TextWriter.NewLine為另一個字串，以變更行終止符。

WriteLine(String, Object, Object)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

使用指定的格式資訊，將指定之物件的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

format: String

複合格式字串。

arg0: Object

第一個物件，使用 format 寫入。

arg1: Object

第二個物件，使用 format 寫入。

例外狀況

IOException

發生 I/O 錯誤。

ArgumentNullException

format 為 null。

FormatException

format 中的格式規格無效。

範例

下列範例會示範數字、日期和列舉型別的標準格式化規範。

// 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
'

下列範例是一個小費計算機，可計算 18% 小費，並使用 WriteLine 方法來顯示原始費用的數量、小費的數量，以及總金額。此範例是主控台應用程式，要求使用者以命令行參數的形式提供原始費用的數量。

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

備註

這個方法會使用 .NET 的複合格式設定功能，將物件的值轉換成其文字表示法，並將該表示法內嵌在字串中。產生的字串會寫入輸出數據流。

參數 format 包含零個或多個與零或多個索引佔位元混合的文字執行，稱為格式項目，對應至這個方法參數清單中的物件。格式化程式會將每個格式專案取代為對應物件值的文字表示。

格式項目的語法為 {index[,alignment][:formatString]}，指定強制索引、格式化文字的選擇性長度和對齊方式，以及控制對應物件值格式化方式的選擇性格式規範字元字元串。

.NET 提供廣泛的格式設定支援，在下列格式化主題中詳細說明。

如需、等Format AppendFormat方法所支援之複合格式功能的詳細資訊，以及的WriteLine一些多載，請參閱複合格式設定。
如需數值格式規範的詳細資訊，請參閱標準數值格式字串和自定義數值格式字串。
如需日期和時間格式規範的詳細資訊，請參閱標準日期和時間格式字元串和自定義日期和時間格式字串。
如需列舉格式規範的詳細資訊，請參閱列舉格式字串。
如需格式化的詳細資訊，請參閱格式化類型。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(String)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的字串值 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

value: String

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

這個範例會將行終止符從預設值「\r\n」或 vbCrLf 「\r\n\r\n」或變更 vbCrLf + vbCrLf為。然後它會呼叫 WriteLine() 和 WriteLine(String) 方法，以顯示主控台的輸出。

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.

備註

如果值為 null，則只會將行終止符寫入標準輸出數據流。

如需行終止符的詳細資訊，請參閱方法的一 WriteLine() 節。

另請參閱

適用於

WriteLine(Char[], Int32, Int32)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的 Unicode 字元子陣列 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

buffer: Char[]

Unicode 字元陣列。

index: Int32

buffer 中的開始位置。

count: Int32

要寫入的字元數。

例外狀況

ArgumentNullException

buffer 為 null。

ArgumentOutOfRangeException

index 或 count 小於零。

ArgumentException

index 加上 count 指定的位置不在 buffer 內。

IOException

發生 I/O 錯誤。

備註

這個方法會將count從位置indexbuffer開始的字元寫入標準輸出數據流。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(String, ReadOnlySpan<Object>)

public:
 static void WriteLine(System::String ^ format, ReadOnlySpan<System::Object ^> arg);

public static void WriteLine (string format, ReadOnlySpan<object?> arg);

static member WriteLine : string * ReadOnlySpan<obj> -> unit

Public Shared Sub WriteLine (format As String, arg As ReadOnlySpan(Of Object))

參數

format: String

arg: ReadOnlySpan<Object>

適用於

WriteLine(String, Object[])

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

使用指定的格式資訊，將指定之物件陣列的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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())

參數

format: String

複合格式字串。

arg: Object[]

要使用 format 寫入的物件陣列。

例外狀況

IOException

發生 I/O 錯誤。

ArgumentNullException

format 或 arg 為 null。

FormatException

format 中的格式規格無效。

範例

下列範例會示範數字、日期和列舉型別的標準格式化規範。

// 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
'

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

備註

這個方法會使用 .NET 的複合格式設定功能，將物件的值轉換成其文字表示法，並將該表示法內嵌在字串中。產生的字串會寫入輸出數據流。

.NET 提供廣泛的格式設定支援，在下列格式化主題中詳細說明。

如需、等Format AppendFormat方法所支援之複合格式功能的詳細資訊，以及的WriteLine一些多載，請參閱複合格式設定。
如需數值格式規範的詳細資訊，請參閱標準數值格式字串和自定義數值格式字串。
如需日期和時間格式規範的詳細資訊，請參閱標準日期和時間格式字元串和自定義日期和時間格式字串。
如需列舉格式規範的詳細資訊，請參閱列舉格式字串。
如需格式化的詳細資訊，請參閱格式化類型。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

給呼叫者的注意事項

C++ 程式代碼不會呼叫這個方法。 C++ 編譯程式會解析對 System.Console.WriteLine 的呼叫，其中包含字串和四個或多個物件參數的清單，做為的 WriteLine(String, Object, Object, Object, Object)呼叫。它會解析對 System.Console.WriteLine 的呼叫，其中包含字串和物件陣列做為對的 WriteLine(String, Object)呼叫。

另請參閱

適用於

WriteLine(String, Object)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

使用指定的格式資訊，將指定之物件的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

format: String

複合格式字串。

arg0: Object

要使用 format 寫入的物件。

例外狀況

IOException

發生 I/O 錯誤。

ArgumentNullException

format 為 null。

FormatException

format 中的格式規格無效。

範例

下列範例會 WriteLine(String, Object) 呼叫方法，以顯示五個 Boolean 隨機產生的值。

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

下列範例會 WriteLine(String, Object) 呼叫方法來顯示目前的日期。請注意，自變數中的 format 格式專案會使用「D」標準日期和時間格式字串，以目前文化特性的長日期格式顯示日期。

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

備註

這個方法會使用 .NET 的複合格式設定功能，將物件的值轉換成其文字表示法，並將該表示法內嵌在字串中。產生的字串會寫入輸出數據流。

.NET 提供廣泛的格式設定支援，在下列格式化主題中詳細說明。

如需、等Format AppendFormat方法所支援之複合格式功能的詳細資訊，以及的WriteLine一些多載，請參閱複合格式設定。
如需數值格式規範的詳細資訊，請參閱標準數值格式字串和自定義數值格式字串。
如需日期和時間格式規範的詳細資訊，請參閱標準日期和時間格式字元串和自定義日期和時間格式字串。
如需列舉格式規範的詳細資訊，請參閱列舉格式字串。
如需格式化的詳細資訊，請參閱格式化類型。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(UInt64)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

重要

此 API 不符合 CLS 規範。

將指定的 64 位元不帶正負號整數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

value: UInt64

要寫入的值。

屬性: CLSCompliantAttribute

例外狀況

IOException

發生 I/O 錯誤。

範例

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

備註

的文字表示 value 是由呼叫 UInt64.ToString 方法所產生。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(UInt32)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

重要

此 API 不符合 CLS 規範。

將指定的 32 位元不帶正負號整數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

value: UInt32

要寫入的值。

屬性: CLSCompliantAttribute

例外狀況

IOException

發生 I/O 錯誤。

範例

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

備註

的文字表示 value 是由呼叫 UInt32.ToString 方法所產生。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Single)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的單精確度浮點數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

public:
 static void WriteLine(float value);

public static void WriteLine (float value);

static member WriteLine : single -> unit

Public Shared Sub WriteLine (value As Single)

參數

value: Single

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

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

備註

的文字表示 value 是由呼叫 Single.ToString 方法所產生。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Double)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的雙精確度浮點數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

public:
 static void WriteLine(double value);

public static void WriteLine (double value);

static member WriteLine : double -> unit

Public Shared Sub WriteLine (value As Double)

參數

value: Double

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

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

備註

的文字表示 value 是由呼叫 Double.ToString 方法所產生。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Int64)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的 64 位元帶正負號整數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

public:
 static void WriteLine(long value);

public static void WriteLine (long value);

static member WriteLine : int64 -> unit

Public Shared Sub WriteLine (value As Long)

參數

value: Int64

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

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

備註

的文字表示 value 是由呼叫 Int64.ToString 方法所產生。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Int32)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的 32 位元帶正負號整數值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

public:
 static void WriteLine(int value);

public static void WriteLine (int value);

static member WriteLine : int -> unit

Public Shared Sub WriteLine (value As Integer)

參數

value: Int32

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

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

備註

的文字表示 value 是由呼叫 Int32.ToString 方法所產生。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Decimal)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的 Decimal 值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

value: Decimal

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

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

備註

的文字表示 value 是由呼叫 Decimal.ToString 方法所產生。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Char[])

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的 Unicode 字元陣列 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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())

參數

buffer: Char[]

Unicode 字元陣列。

例外狀況

IOException

發生 I/O 錯誤。

備註

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Char)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定的 Unicode 字元 (後面接著目前的行結束字元) 寫入標準輸出資料流。

public:
 static void WriteLine(char value);

public static void WriteLine (char value);

static member WriteLine : char -> unit

Public Shared Sub WriteLine (value As Char)

參數

value: Char

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

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

備註

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Boolean)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定布林值的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

public:
 static void WriteLine(bool value);

public static void WriteLine (bool value);

static member WriteLine : bool -> unit

Public Shared Sub WriteLine (value As Boolean)

參數

value: Boolean

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

下列範例會產生十個隨機整數，並使用 Console.WriteLine(Boolean) 方法來指出它們是否偶數。

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

備註

的文字表示 value 是由呼叫 Boolean.ToString 方法所產生。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine()

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將目前的行結束字元寫入標準輸出資料流。

public:
 static void WriteLine();

public static void WriteLine ();

static member WriteLine : unit -> unit

Public Shared Sub WriteLine ()

例外狀況

IOException

發生 I/O 錯誤。

範例

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.

備註

默認行終止符是字串，其值為歸位字元，後面接著 C# 中的換行字元 (“\r\n” 或 vbCrLf Visual Basic) 。您可以將屬性的 Out 屬性設定TextWriter.NewLine為另一個字串，以變更行終止符。這個範例將提供說明。

另請參閱

適用於

WriteLine(String, Object, Object, Object)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

使用指定的格式資訊，將指定之物件的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

format: String

複合格式字串。

arg0: Object

第一個物件，使用 format 寫入。

arg1: Object

第二個物件，使用 format 寫入。

arg2: Object

第三個物件，使用 format 寫入。

例外狀況

IOException

發生 I/O 錯誤。

ArgumentNullException

format 為 null。

FormatException

format 中的格式規格無效。

範例

下列範例會示範數字、日期和列舉型別的標準格式化規範。

// 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
'

下列範例是計算 18% 小費的小費計算機，並使用 WriteLine 方法來顯示原始費用的數量、小費金額和總金額。此範例是主控台應用程式，要求使用者以命令行參數的形式提供原始費用的數量。

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

備註

這個方法會使用 .NET 的複合格式功能，將物件的值轉換成其文字表示，並將該表示內嵌在字串中。產生的字串會寫入輸出數據流。

參數 format 是由零或多個文字執行所組成，這些文字與零個或多個索引佔位元混合，稱為格式項目，對應至此方法參數清單中的物件。格式設定程式會將每個格式專案取代為對應物件值的文字表示。

格式項目的語法是 {index[,alignment][:formatString]}，它會指定強制索引、格式化文字的選擇性長度和對齊方式，以及控制對應物件值格式化方式之格式規範字元的選擇性字符串。

.NET 提供廣泛的格式支援，如下列格式主題中更詳細地說明。

如需、 AppendFormat等方法Format所支援之複合格式功能的詳細資訊，以及的WriteLine一些多載，請參閱複合格式設定。
如需數值格式規範的詳細資訊，請參閱標準數值格式字串和自定義數值格式字串。
如需日期和時間格式規範的詳細資訊，請參閱標準日期和時間格式字元串和自定義日期和時間格式字串。
如需列舉格式規範的詳細資訊，請參閱列舉格式字串。
如需格式化的詳細資訊，請參閱格式化類型。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(Object)

來源:: Console.cs

來源:: Console.cs

來源:: Console.cs

將指定物件的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

value: Object

要寫入的值。

例外狀況

IOException

發生 I/O 錯誤。

範例

下列範例會 WriteLine(Object) 使用方法，將對象數位中的每個值顯示到主控台。

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

備註

如果 value 為 null，只寫入行結束字元。否則，會 ToString 呼叫的 value 方法來產生其字串表示，並將產生的字串寫入標準輸出數據流。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

另請參閱

適用於

WriteLine(String, Object, Object, Object, Object)

重要

此 API 不符合 CLS 規範。

使用指定的格式資訊，將指定之物件和可變長度參數清單的文字表示 (後面接著目前的行結束字元) 寫入標準輸出資料流。

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)

參數

format: String

複合格式字串。

arg0: Object

第一個物件，使用 format 寫入。

arg1: Object

第二個物件，使用 format 寫入。

arg2: Object

第三個物件，使用 format 寫入。

arg3: Object

第四個物件，使用 format 寫入。

屬性: CLSCompliantAttribute

例外狀況

IOException

發生 I/O 錯誤。

ArgumentNullException

format 為 null。

FormatException

format 中的格式規格無效。

範例

下列範例說明如何搭配 WriteLine(String, Object, Object, Object, Object) 方法使用變數自變數。使用複合格式字串和五個格式專案呼叫方法。

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

備註

注意

此應用程式開發介面不符合 CLS 標準。符合 CLS 標準的替代項目為 Console.WriteLine(String, Object[])。 C# 和 Visual Basic 編譯程式會自動將這個方法的呼叫解析為的 Console.WriteLine(String, Object[])呼叫。

這個方法會使用 .NET 的複合格式功能，將物件的值轉換成其文字表示，並將該表示內嵌在字串中。產生的字串會寫入輸出數據流。

.NET 提供廣泛的格式支援，如下列格式主題中更詳細地說明。

如需、 AppendFormat等方法Format所支援之複合格式功能的詳細資訊，以及的WriteLine一些多載，請參閱複合格式設定。
如需數值格式規範的詳細資訊，請參閱標準數值格式字串和自定義數值格式字串。
如需日期和時間格式規範的詳細資訊，請參閱標準日期和時間格式字元串和自定義日期和時間格式字串。
如需列舉格式規範的詳細資訊，請參閱列舉格式字串。
如需格式化的詳細資訊，請參閱格式化類型。

如需行終止符的詳細資訊，請參閱不採用任何參數之方法的 WriteLine 一節。

給呼叫者的注意事項

這個方法會以 vararg 關鍵詞標示，這表示它支援可變數目的參數。您可以從 Visual C++ 呼叫方法，但無法從 C# 或 Visual Basic 程式代碼呼叫此方法。 C# 和 Visual Basic 編譯程式會將呼叫 WriteLine(String, Object, Object, Object, Object) 解析為的 WriteLine(String, Object[])呼叫。

另請參閱

適用於

共用方式為

Console.WriteLine 方法

定義

多載

備註

WriteLine(String, Object, Object)

參數

例外狀況

範例

備註

另請參閱

適用於

WriteLine(String)

參數

例外狀況

範例

備註

另請參閱

適用於

WriteLine(Char[], Int32, Int32)

參數

例外狀況

備註

另請參閱

適用於

WriteLine(String, ReadOnlySpan<Object>)

參數

適用於

WriteLine(String, Object[])

參數

例外狀況

範例

備註

給呼叫者的注意事項

另請參閱

適用於

WriteLine(String, Object)

參數

例外狀況

範例

備註

另請參閱

適用於

WriteLine(UInt64)

參數

例外狀況

範例

備註

另請參閱

適用於

WriteLine(UInt32)

參數

例外狀況

範例

備註

另請參閱

適用於

WriteLine(Single)

參數

例外狀況

範例

備註

另請參閱

適用於

WriteLine(Double)

參數

例外狀況

範例

備註

另請參閱

適用於

WriteLine(Int64)

參數

例外狀況

範例

備註

另請參閱

適用於

WriteLine(Int32)

參數