Int64.ToString Method

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Converts the numeric value of this instance to its equivalent string representation.

Overloads

ToString(IFormatProvider)	Converts the numeric value of this instance to its equivalent string representation using the specified culture-specific format information.
ToString()	Converts the numeric value of this instance to its equivalent string representation.
ToString(String)	Converts the numeric value of this instance to its equivalent string representation, using the specified format.
ToString(String, IFormatProvider)	Converts the numeric value of this instance to its equivalent string representation using the specified format and culture-specific format information.

ToString(IFormatProvider)

Source:: Int64.cs

Source:: Int64.cs

Source:: Int64.cs

Converts the numeric value of this instance to its equivalent string representation using the specified culture-specific format information.

public:
 virtual System::String ^ ToString(IFormatProvider ^ provider);

public:
 System::String ^ ToString(IFormatProvider ^ provider);

public string ToString (IFormatProvider provider);

public string ToString (IFormatProvider? provider);

override this.ToString : IFormatProvider -> string

Public Function ToString (provider As IFormatProvider) As String

Parameters

provider: IFormatProvider

An IFormatProvider that supplies culture-specific formatting information.

Returns

String

The string representation of the value of this instance as specified by provider.

Implements

ToString(IFormatProvider)

Examples

The following example displays the string representation of an Int64 value using CultureInfo objects that represent several different cultures.

long value = -16325901;
// Display value using the invariant culture.
Console.WriteLine(value.ToString(CultureInfo.InvariantCulture));
// Display value using the en-GB culture.
Console.WriteLine(value.ToString(CultureInfo.CreateSpecificCulture("en-GB")));
// Display value using the de-DE culture.
Console.WriteLine(value.ToString(CultureInfo.CreateSpecificCulture("de-DE")));
// This example displays the following output to the console:
//       -16325901
//       -16325901
//       -16325901

let value = -16325901L
// Display value using the invariant culture.
printfn $"{value.ToString CultureInfo.InvariantCulture}"
// Display value using the en-GB culture.
printfn $"""{value.ToString(CultureInfo.CreateSpecificCulture "en-GB" )}"""
// Display value using the de-DE culture.
printfn $"""{value.ToString(CultureInfo.CreateSpecificCulture "de-DE" )}"""
// This example displays the following output to the console:
//       -16325901
//       -16325901
//       -16325901

Dim value As Long = -16325801
' Display value using the invariant culture.
Console.WriteLine(value.ToString(CultureInfo.InvariantCulture))
' Display value using the en-GB culture.
Console.WriteLine(value.ToString(CultureInfo.CreateSpecificCulture("en-GB")))
' Display value using the de-DE culture.
Console.WriteLine(value.ToString(CultureInfo.CreateSpecificCulture("de-DE")))
' This example displays the following output to the console:
'       -16325901
'       -16325901
'       -16325901

Remarks

The ToString(IFormatProvider) method formats an Int64 value in the default ("G", or general) format by using the NumberFormatInfo object of a specified culture. If you want to specify a different format or the current culture, use the other overloads of the ToString method, as follows:

To use format	For culture	Use the overload
Default ("G") format	Default (current) culture	ToString()
A specific format	Default (current) culture	ToString(String)
A specific format	A specific culture	ToString(String, IFormatProvider)

The provider parameter is an object that implements the IFormatProvider interface. Its GetFormat method returns a NumberFormatInfo object that provides culture-specific information about the format of the string that is returned by this method. The object that implements IFormatProvider can be any of the following:

A CultureInfo object that represents the culture whose formatting rules are to be used.
A NumberFormatInfo object that contains specific numeric formatting information for this value.
A custom object that implements IFormatProvider and whose GetFormat method returns a NumberFormatInfo object that provides formatting information.

If provider is null or a NumberFormatInfo object cannot be obtained from provider, the return value is formatted with the NumberFormatInfo object for the current culture.

.NET provides extensive formatting support, which is described in greater detail in the following formatting topics:

For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about formatting, see Formatting Types.

Applies to

ToString()

Source:: Int64.cs

Source:: Int64.cs

Source:: Int64.cs

Converts the numeric value of this instance to its equivalent string representation.

public:
 override System::String ^ ToString();

public override string ToString ();

override this.ToString : unit -> string

Public Overrides Function ToString () As String

Returns

String

The string representation of the value of this instance, consisting of a minus sign if the value is negative, and a sequence of digits ranging from 0 to 9 with no leading zeroes.

Examples

The following example displays an Int64 value using the default ToString() method. It also displays the string representations of the Int64 value that results from using a number of standard format specifiers. The examples are displayed using the formatting conventions of the en-US culture.

long value = -16325091;
// Display value using default ToString method.
Console.WriteLine(value.ToString());            // Displays -16325091
// Display value using some standard format specifiers.
Console.WriteLine(value.ToString("G"));         // Displays -16325091
Console.WriteLine(value.ToString("C"));         // Displays ($16,325,091.00)
Console.WriteLine(value.ToString("D"));         // Displays -16325091
Console.WriteLine(value.ToString("F"));         // Displays -16325091.00
Console.WriteLine(value.ToString("N"));         // Displays -16,325,091.00
Console.WriteLine(value.ToString("N0"));         // Displays -16,325,091
Console.WriteLine(value.ToString("X"));         // Displays FFFFFFFFFF06E61D

let value = -16325091L
// Display value using default ToString method.
printfn $"{value.ToString()}"            // Displays -16325091
// Display value using some standard format specifiers.
printfn $"""{value.ToString "G"}"""         // Displays -16325091
printfn $"""{value.ToString "C"}"""         // Displays ($16,325,091.00)
printfn $"""{value.ToString "D"}"""         // Displays -16325091
printfn $"""{value.ToString "F"}"""         // Displays -16325091.00
printfn $"""{value.ToString "N"}"""         // Displays -16,325,091.00
printfn $"""{value.ToString "N0"}"""        // Displays -16,325,091
printfn $"""{value.ToString "X"}"""         // Displays FFFFFFFFFF06E61D

Dim value As Long = -16325091
' Display value using default ToString method.
Console.WriteLine(value.ToString())            ' Displays -16325091
' Display value using some standard format specifiers.
Console.WriteLine(value.ToString("G"))         ' Displays -16325091
Console.WriteLine(value.ToString("C"))         ' Displays ($16,325,091.00)
Console.WriteLine(value.ToString("D"))         ' Displays -16325091
Console.WriteLine(value.ToString("F"))         ' Displays -16325091.00
Console.WriteLine(value.ToString("N"))         ' Displays -16,325091.00
Console.WriteLine(value.ToString("X"))         ' Displays FFFFFFFFFF06E61D

Remarks

The ToString() method formats an Int64 value in the default ("G", or general) format by using the NumberFormatInfo object of the current culture. If you want to specify a different format or culture, use the other overloads of the ToString method, as follows:

To use format	For culture	Use the overload
Default ("G") format	A specific culture	ToString(IFormatProvider)
A specific format	Default (current) culture	ToString(String)
A specific format	A specific culture	ToString(String, IFormatProvider)

.NET provides extensive formatting support, which is described in greater detail in the following formatting topics:

For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about formatting, see Formatting Types.

Applies to

ToString(String)

Source:: Int64.cs

Source:: Int64.cs

Source:: Int64.cs

Converts the numeric value of this instance to its equivalent string representation, using the specified format.

public:
 System::String ^ ToString(System::String ^ format);

public string ToString (string format);

public string ToString (string? format);

override this.ToString : string -> string

Public Function ToString (format As String) As String

Parameters

format: String

A numeric format string.

Returns

String

The string representation of the value of this instance as specified by format.

Exceptions

FormatException

format is invalid or not supported.

Examples

The following example displays an Int64 value using each of the supported standard numeric format specifiers together with two custom numeric format strings. In converting the numeric values to strings, the example uses the formatting conventions of the en-US culture.

long value = -16325;
string specifier;

// Use standard numeric format specifier.
specifier = "G";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    G: -16325
specifier = "C";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    C: ($16,325.00)
specifier = "D8";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    D8: -00016325
specifier = "E4";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    E4: -1.6325E+004
specifier = "e3";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    e3: -1.633e+004
specifier = "F";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    F: -16325.00
specifier = "N";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    N: -16,325.00
specifier = "P";
Console.WriteLine("{0}: {1}", specifier, (value/100000.0).ToString(specifier));
// Displays:    P: -16.33 %
specifier = "X";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    X: FFFFFFFFFFFFC03B

// Use custom numeric format specifiers.
specifier = "0,0.000";
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
// Displays:    0,0.000: -16,325.000
specifier = "#,#.00#;(#,#.00#)";
Console.WriteLine("{0}: {1}", specifier, (value*-1).ToString(specifier));
// Displays:    #,#.00#;(#,#.00#): 16,325.00

let value = -16325L

// Use standard numeric format specifier.
let specifier = "G"
printfn $"{specifier}: {value.ToString specifier}"
// Displays:    G: -16325

let specifier = "C"
printfn $"{specifier}: {value.ToString specifier}"
// Displays:    C: ($16,325.00)

let specifier = "D8"
printfn $"{specifier}: {value.ToString specifier}"
// Displays:    D8: -00016325

let specifier = "E4"
printfn $"{specifier}: {value.ToString specifier}"
// Displays:    E4: -1.6325E+004

let specifier = "e3"
printfn $"{specifier}: {value.ToString specifier}"
// Displays:    e3: -1.633e+004

let specifier = "F"
printfn $"{specifier}: {value.ToString specifier}"
// Displays:    F: -16325.00

let specifier = "N"
printfn $"{specifier}: {value.ToString specifier }"
// Displays:    N: -16,325.00

let specifier = "P"
printfn $"{specifier}: {(float value / 100000.0).ToString specifier}"
// Displays:    P: -16.33 %

let specifier = "X"
printfn $"{specifier}: {value.ToString(specifier)}"
// Displays:    X: FFFFFFFFFFFFC03B

// Use custom numeric format specifiers.
let specifier = "0,0.000"
printfn $"{specifier}: {value.ToString(specifier)}"
// Displays:    0,0.000: -16,325.000

let specifier = "#,#.00#(#,#.00#)"
printfn $"{specifier}: {(value * -1L).ToString specifier}"
// Displays:    #,#.00#(#,#.00#): 16,325.00

Dim value As Long = -16325
Dim specifier As String

' Use standard numeric format specifier.
specifier = "G"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    G: -16325
specifier = "C"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    C: ($16,325.00)
specifier = "D8"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    D8: -00016325
specifier = "E4"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    E4: -1.6325E+004
specifier = "e3"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    e3: -1.633e+004
specifier = "F"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    F: -16325.00
specifier = "N"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    N: -16,325.00
specifier = "P"
Console.WriteLine("{0}: {1}", specifier, (value/100000).ToString(specifier))
' Displays:    P: -16.33 %
specifier = "X"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    X: FFFFFFFFFFFFC03B

' Use custom numeric format specifiers.
specifier = "0,0.000"
Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier))
' Displays:    0,0.000: -16,325.000
specifier = "#,#.00#;(#,#.00#)"
Console.WriteLine("{0}: {1}", specifier, (value*-1).ToString(specifier))
' Displays:    #,#.00#;(#,#.00#): 16,325.00

Remarks

The ToString(String) method formats an Int64 value in a specified format by using a NumberFormatInfo object that represents the conventions of the current culture. If you want to use the default ("G", or general) format or specify a different culture, use the other overloads of the ToString method, as follows:

To use format	For culture	Use the overload
Default ("G") format	Default (current) culture	ToString()
Default ("G") format	A specific culture	ToString(IFormatProvider)
A specific format	A specific culture	ToString(String, IFormatProvider)

The format parameter can be any valid standard numeric format specifier except for "R", as well as any combination of custom numeric format specifiers. If format is null or an empty string (""), the return value of this instance is formatted with the general numeric format specifier ("G").

.NET provides extensive formatting support, which is described in greater detail in the following formatting topics:

For more information about numeric format specifiers, Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about formatting, see Formatting Types.

The return value of this instance is formatted with the NumberFormatInfo for the current culture.

Applies to

ToString(String, IFormatProvider)

Source:: Int64.cs

Source:: Int64.cs

Source:: Int64.cs

Converts the numeric value of this instance to its equivalent string representation using the specified format and culture-specific format information.

public:
 virtual System::String ^ ToString(System::String ^ format, IFormatProvider ^ provider);

public string ToString (string format, IFormatProvider provider);

public string ToString (string? format, IFormatProvider? provider);

override this.ToString : string * IFormatProvider -> string

Public Function ToString (format As String, provider As IFormatProvider) As String

Parameters

format: String

A numeric format string.

provider: IFormatProvider

An object that supplies culture-specific formatting information about this instance.

Returns

String

The string representation of the value of this instance as specified by format and provider.

Implements

ToString(String, IFormatProvider)

Exceptions

FormatException

format is invalid or not supported.

Examples

The following example displays a positive and a negative value using each of the supported standard numeric format specifiers for three different cultures.

// Define cultures whose formatting conventions are to be used.
CultureInfo[] cultures = {CultureInfo.CreateSpecificCulture("en-US"),
                          CultureInfo.CreateSpecificCulture("fr-FR"),
                          CultureInfo.CreateSpecificCulture("es-ES") };
long positiveNumber = 1679;
long negativeNumber = -3045;
string[] specifiers = {"G", "C", "D8", "E2", "F", "N", "N0", "P", "X8"};

foreach (string specifier in specifiers)
{
   foreach (CultureInfo culture in cultures)
   {
      // Display values with "G" format specifier.
      Console.WriteLine("{0} format using {1} culture: {2, 16} {3, 16}",
                        specifier, culture.Name,
                        positiveNumber.ToString(specifier, culture),
                        negativeNumber.ToString(specifier, culture));
   }
   Console.WriteLine();
}
// The example displays the following output to the console:
//    G format using en-US culture:             1679            -3045
//    G format using fr-FR culture:             1679            -3045
//    G format using es-ES culture:             1679            -3045
//
//    C format using en-US culture:        $1,679.00      ($3,045.00)
//    C format using fr-FR culture:       1 679,00 €      -3 045,00 €
//    C format using es-ES culture:       1.679,00 €      -3.045,00 €
//
//    D8 format using en-US culture:         00001679        -00003045
//    D8 format using fr-FR culture:         00001679        -00003045
//    D8 format using es-ES culture:         00001679        -00003045
//
//    E2 format using en-US culture:        1.68E+003       -3.05E+003
//    E2 format using fr-FR culture:        1,68E+003       -3,05E+003
//    E2 format using es-ES culture:        1,68E+003       -3,05E+003
//
//    F format using en-US culture:          1679.00         -3045.00
//    F format using fr-FR culture:          1679,00         -3045,00
//    F format using es-ES culture:          1679,00         -3045,00
//
//    N format using en-US culture:         1,679.00        -3,045.00
//    N format using fr-FR culture:         1 679,00        -3 045,00
//    N format using es-ES culture:         1.679,00        -3.045,00
//
//    N0 format using en-US culture:         1,679           -3,045
//    N0 format using fr-FR culture:         1 679           -3 045
//    N0 format using es-ES culture:         1.679           -3.045
//
//    P format using en-US culture:      167,900.00%     -304,500.00%
//    P format using fr-FR culture:     167 900,00 %    -304 500,00 %
//    P format using es-ES culture:     167.900,00 %    -304.500,00 %
//
//    X8 format using en-US culture:         0000068F FFFFFFFFFFFFF41B
//    X8 format using fr-FR culture:         0000068F FFFFFFFFFFFFF41B
//    X8 format using es-ES culture:         0000068F FFFFFFFFFFFFF41B

// Define cultures whose formatting conventions are to be used.
let cultures = 
    [| CultureInfo.CreateSpecificCulture "en-US"
       CultureInfo.CreateSpecificCulture "fr-FR"
       CultureInfo.CreateSpecificCulture "es-ES" |]

let positiveNumber = 1679L
let negativeNumber = -3045L
let specifiers = [| "G"; "C"; "D8"; "E2"; "F"; "N"; "N0"; "P"; "X8" |]

for specifier in specifiers do
    for culture in cultures do
        // Display values with "G" format specifier.
        printfn $"{specifier} format using {culture.Name} culture: {positiveNumber.ToString(specifier, culture), 16} {negativeNumber.ToString(specifier, culture), 16}"           
    printfn ""

// The example displays the following output to the console:
//    G format using en-US culture:             1679            -3045
//    G format using fr-FR culture:             1679            -3045
//    G format using es-ES culture:             1679            -3045
//
//    C format using en-US culture:        $1,679.00      ($3,045.00)
//    C format using fr-FR culture:       1 679,00 €      -3 045,00 €
//    C format using es-ES culture:       1.679,00 €      -3.045,00 €
//
//    D8 format using en-US culture:         00001679        -00003045
//    D8 format using fr-FR culture:         00001679        -00003045
//    D8 format using es-ES culture:         00001679        -00003045
//
//    E2 format using en-US culture:        1.68E+003       -3.05E+003
//    E2 format using fr-FR culture:        1,68E+003       -3,05E+003
//    E2 format using es-ES culture:        1,68E+003       -3,05E+003
//
//    F format using en-US culture:          1679.00         -3045.00
//    F format using fr-FR culture:          1679,00         -3045,00
//    F format using es-ES culture:          1679,00         -3045,00
//
//    N format using en-US culture:         1,679.00        -3,045.00
//    N format using fr-FR culture:         1 679,00        -3 045,00
//    N format using es-ES culture:         1.679,00        -3.045,00
//
//    N0 format using en-US culture:         1,679           -3,045
//    N0 format using fr-FR culture:         1 679           -3 045
//    N0 format using es-ES culture:         1.679           -3.045
//
//    P format using en-US culture:      167,900.00%     -304,500.00%
//    P format using fr-FR culture:     167 900,00 %    -304 500,00 %
//    P format using es-ES culture:     167.900,00 %    -304.500,00 %
//
//    X8 format using en-US culture:         0000068F FFFFFFFFFFFFF41B
//    X8 format using fr-FR culture:         0000068F FFFFFFFFFFFFF41B
//    X8 format using es-ES culture:         0000068F FFFFFFFFFFFFF41B

' Define cultures whose formatting conventions are to be used.
Dim cultures() As CultureInfo = {CultureInfo.CreateSpecificCulture("en-US"), _
                                 CultureInfo.CreateSpecificCulture("fr-FR"), _
                                 CultureInfo.CreateSpecificCulture("es-ES") }
Dim positiveNumber As Long = 1679
Dim negativeNumber As Long = -3045
Dim specifiers() As String = {"G", "C", "D8", "E2", "F", "N", "P", "X8"} 

For Each specifier As String In specifiers
   For Each culture As CultureInfo In Cultures
      ' Display values with "G" format specifier.
      Console.WriteLine("{0} format using {1} culture: {2, 16} {3, 16}", _ 
                        specifier, culture.Name, _
                        positiveNumber.ToString(specifier, culture), _
                        negativeNumber.ToString(specifier, culture))

   Next
   Console.WriteLine()
Next
' The example displays the following output to the console:
'
'    G format using en-US culture:             1679            -3045
'    G format using fr-FR culture:             1679            -3045
'    G format using es-ES culture:             1679            -3045
'
'    C format using en-US culture:        $1,679.00      ($3,045.00)
'    C format using fr-FR culture:       1 679,00 €      -3 045,00 €
'    C format using es-ES culture:       1.679,00 €      -3.045,00 €
'
'    D8 format using en-US culture:         00001679        -00003045
'    D8 format using fr-FR culture:         00001679        -00003045
'    D8 format using es-ES culture:         00001679        -00003045
'
'    E2 format using en-US culture:        1.68E+003       -3.05E+003
'    E2 format using fr-FR culture:        1,68E+003       -3,05E+003
'    E2 format using es-ES culture:        1,68E+003       -3,05E+003
'
'    F format using en-US culture:          1679.00         -3045.00
'    F format using fr-FR culture:          1679,00         -3045,00
'    F format using es-ES culture:          1679,00         -3045,00
'
'    N format using en-US culture:         1,679.00        -3,045.00
'    N format using fr-FR culture:         1 679,00        -3 045,00
'    N format using es-ES culture:         1.679,00        -3.045,00
'
'    P format using en-US culture:      167,900.00%     -304,500.00%
'    P format using fr-FR culture:     167 900,00 %    -304 500,00 %
'    P format using es-ES culture:     167.900,00 %    -304.500,00 %
'
'    X8 format using en-US culture:         0000068F FFFFFFFFFFFFF41B
'    X8 format using fr-FR culture:         0000068F FFFFFFFFFFFFF41B
'    X8 format using es-ES culture:         0000068F FFFFFFFFFFFFF41B

Remarks

The ToString(String, IFormatProvider) method formats an Int64 value in a specified format by using the NumberFormatInfo object of a specified culture. If you want to use default format or culture settings, use the other overloads of the ToString method, as follows:

To use format	For culture	Use the overload
Default ("G") format	Default (current) culture	ToString()
Default ("G") format	A specific culture	ToString(IFormatProvider)
A specific format	Default (current) culture	ToString(String)

The format parameter can be either a standard or a custom numeric format string. All standard numeric format strings other than "R" (or "r") are supported, as are all custom numeric format characters. If format is null or an empty string (""), the return value for this instance is formatted with the general numeric format specifier ("G").

A CultureInfo object that represents the culture whose formatting rules are to be used.
A NumberFormatInfo object that contains specific numeric formatting information for this value.
A custom object that implements IFormatProvider and whose GetFormat method returns a NumberFormatInfo object that provides formatting information.

If provider is null or a NumberFormatInfo object cannot be obtained from provider, the return value for this instance is formatted with the NumberFormatInfo for the current culture.

.NET provides extensive formatting support, which is described in greater detail in the following formatting topics:

For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about formatting, see Formatting Types.

Applies to

แชร์ผ่าน

Int64.ToString Method

Definition

Overloads

ToString(IFormatProvider)

Parameters

Returns

Implements

Examples

Remarks

See also

Applies to

ToString()

Returns

Examples

Remarks

See also

Applies to

ToString(String)

Parameters

Returns

Exceptions

Examples

Remarks

See also

Applies to

ToString(String, IFormatProvider)

Parameters

Returns

Implements

Exceptions

Examples

Remarks

See also

Applies to

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