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Convert.ToString Method (UInt64, IFormatProvider)

Converts the value of the specified 64-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

This API is not CLS-compliant. 

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
[CLSCompliantAttribute(false)]
public static string ToString(
	ulong value,
	IFormatProvider provider
)

Parameters

value
Type: System.UInt64

The 64-bit unsigned integer to convert.

provider
Type: System.IFormatProvider

An object that supplies culture-specific formatting information.

Return Value

Type: System.String
The string representation of value.

This implementation is identical to UInt64.ToString(IFormatProvider).

The following example defines a custom NumberFormatInfo class that defines its negative sign as the string "~" and its positive sign as the string "!". It then calls the ToString(UInt64, IFormatProvider) method to convert an unsigned long integer value to its equivalent string representation. The conversion uses both the invariant culture and the custom NumberFormatInfo object. The output indicates that this formatting information is not used, because by default the "G" format specifier does not include a positive sign with positive values.

ulong number = UInt64.MaxValue;
System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo();
nfi.NegativeSign = "~";
nfi.PositiveSign = "!";

Console.WriteLine("{0,-12}  -->  {1,12}",
                  Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture),
                  Convert.ToString(number, nfi));
// The example displays the following output: 
//    18446744073709551615  -->  18446744073709551615

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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