Int64.ToString Method (String, IFormatProvider)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Converts the numeric value of this instance to its equivalent string representation using the specified format and culture-specific format information.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<SecuritySafeCriticalAttribute> _
Public Function ToString ( _
format As String, _
provider As IFormatProvider _
) As String
[SecuritySafeCriticalAttribute]
public string ToString(
string format,
IFormatProvider provider
)
Parameters
- format
Type: System.String
A standard or custom numeric format string (see Remarks).
- provider
Type: System.IFormatProvider
An IFormatProvider that supplies culture-specific formatting information about this instance.
Return Value
Type: System.String
The string representation of the value of this instance as specified by format and provider.
Implements
Remarks
If format is nulla null reference (Nothing in Visual Basic) or an empty string (""), the return value for this instance is formatted with the general numeric format specifier ("G").
The .NET Framework 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.
The provider parameter is an IFormatProvider that obtains a NumberFormatInfo object. The NumberFormatInfo provides culture-specific format information about this instance. If provider is nulla null reference (Nothing in Visual Basic), the return value for this instance is formatted with the NumberFormatInfo for the current culture.
Examples
The following code example formats an integral and a floating-point numeric value using the thread current culture, a specified culture, and all the standard numeric format specifiers. This code example uses two particular numeric types, but would yield similar results for any of the numeric base types (Byte, SByte, Int16, Int32, Int64, UInt16, UInt32, UInt64, Decimal, Single, and Double).
Option Strict On
Imports System.Globalization
Imports System.Threading
Module Example
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
' Display string representations of numbers for en-us culture
Dim ci As New CultureInfo("en-us")
' Output floating point values
Dim floating As Double = 10761.937554
outputBlock.Text += String.Format("C: {0}", _
floating.ToString("C", ci)) ' Displays "C: $10,761.94" & vbCrLf
outputBlock.Text += String.Format("E: {0}", _
floating.ToString("E03", ci)) ' Displays "E: 1.076E+004" & vbCrLf
outputBlock.Text += String.Format("F: {0}", _
floating.ToString("F04", ci)) ' Displays "F: 10761.9376" & vbCrLf
outputBlock.Text += String.Format("G: {0}", _
floating.ToString("G", ci)) ' Displays "G: 10761.937554" & vbCrLf
outputBlock.Text += String.Format("N: {0}", _
floating.ToString("N03", ci)) ' Displays "N: 10,761.938" & vbCrLf
outputBlock.Text += String.Format("P: {0}", _
(floating / 10000).ToString("P02", ci)) ' Displays "P: 107.62 %" & vbCrLf
outputBlock.Text += String.Format("R: {0}", _
floating.ToString("R", ci)) ' Displays "R: 10761.937554" & vbCrLf
outputBlock.Text += vbCrLf
' Output integral values
Dim integral As Integer = 8395
outputBlock.Text += String.Format("C: {0}", _
integral.ToString("C", ci)) ' Displays "C: $8,395.00" & vbCrLf
outputBlock.Text += String.Format("D: {0}", _
integral.ToString("D6")) ' Displays D: 008395"" & vbCrLf
outputBlock.Text += String.Format("E: {0}", _
integral.ToString("E03", ci)) ' Displays "E: 8.395E+003" & vbCrLf
outputBlock.Text += String.Format("F: {0}", _
integral.ToString("F01", ci)) ' Displays "F: 8395.0" & vbCrLf
outputBlock.Text += String.Format("G: {0}", _
integral.ToString("G", ci)) ' Displays "G: 8395" & vbCrLf
outputBlock.Text += String.Format("N: {0}", _
integral.ToString("N01", ci)) ' Displays "N: 8,395.0" & vbCrLf
outputBlock.Text += String.Format("P: {0}", _
(integral / 10000).ToString("P02", ci)) ' Displays "P: 83.95 %" & vbCrLf
outputBlock.Text += String.Format("X: 0x{0}", _
integral.ToString("X", ci)) ' Displays "X: 0x20CB" & vbCrLf
outputBlock.Text += vbCrLf
End Sub
End Module
using System;
using System.Globalization;
using System.Threading;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
// Display string representations of numbers for en-us culture
CultureInfo ci = new CultureInfo("en-us");
// Output floating point values
double floating = 10761.937554;
outputBlock.Text += String.Format("C: {0}",
floating.ToString("C", ci)) + "\n"; // Displays "C: $10,761.94"
outputBlock.Text += String.Format("E: {0}",
floating.ToString("E03", ci)) + "\n"; // Displays "E: 1.076E+004"
outputBlock.Text += String.Format("F: {0}",
floating.ToString("F04", ci)) + "\n"; // Displays "F: 10761.9376"
outputBlock.Text += String.Format("G: {0}",
floating.ToString("G", ci)) + "\n"; // Displays "G: 10761.937554"
outputBlock.Text += String.Format("N: {0}",
floating.ToString("N03", ci)) + "\n"; // Displays "N: 10,761.938"
outputBlock.Text += String.Format("P: {0}",
(floating / 10000).ToString("P02", ci)) + "\n"; // Displays "P: 107.62 %"
outputBlock.Text += String.Format("R: {0}",
floating.ToString("R", ci)) + "\n"; // Displays "R: 10761.937554"
outputBlock.Text += "\n";
// Output integral values
int integral = 8395;
outputBlock.Text += String.Format("C: {0}",
integral.ToString("C", ci)) + "\n"; // Displays "C: $8,395.00"
outputBlock.Text += String.Format("D: {0}",
integral.ToString("D6", ci)) + "\n"; // Displays D: 008395""
outputBlock.Text += String.Format("E: {0}",
integral.ToString("E03", ci)) + "\n"; // Displays "E: 8.395E+003"
outputBlock.Text += String.Format("F: {0}",
integral.ToString("F01", ci)) + "\n"; // Displays "F: 8395.0"
outputBlock.Text += String.Format("G: {0}",
integral.ToString("G", ci)) + "\n"; // Displays "G: 8395"
outputBlock.Text += String.Format("N: {0}",
integral.ToString("N01", ci)) + "\n"; // Displays "N: 8,395.0"
outputBlock.Text += String.Format("P: {0}",
(integral / 10000).ToString("P02", ci)) + "\n"; // Displays "P: 83.95 %"
outputBlock.Text += String.Format("X: 0x{0}",
integral.ToString("X", ci)) + "\n"; // Displays "X: 0x20CB"
outputBlock.Text += "\n";
}
}
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
See Also