Int64.ToString Method (String)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

Syntax

Public Function ToString ( _
    format As String _
) As String
public string ToString(
    string format
)

Parameters

  • format
    Type: System..::.String
    A standard or custom numeric format string (see Remarks).

Return Value

Type: System..::.String
The string representation of the value of this instance as specified by format.

Remarks

If format is nullNothingnullptra null reference (Nothing in Visual Basic) or an empty string (""), the return value of 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:

The return value of 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

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Platforms

Windows Phone

See Also

Reference

Int64 Structure

ToString Overload

System Namespace

Parse

String

Other Resources

Formatting Types

Standard Numeric Format Strings

Custom Numeric Format Strings