UInt32.ToString Method (IFormatProvider)

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Updated: May 2010

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

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


<SecuritySafeCriticalAttribute> _
Public Function ToString ( _
    provider As IFormatProvider _
) As String
public string ToString(
    IFormatProvider provider


Return Value

Type: System.String
The string representation of the value of this instance, which consists of a sequence of digits ranging from 0 to 9, without a sign or leading zeros.




This instance is formatted with the general numeric format specifier ("G"). The string representation of the UInt32 value consists of a sequence of digits ranging from 0 to 9 without leading zeros.


Because the UInt32 data type is not supported on the Macintosh OS X operating system, the string representation of a UInt32 value may be different from those of the other .NET Framework numeric types that are supported by OS X.

The provider parameter is an IFormatProvider implementation. Its GetFormat method returns a NumberFormatInfo object that provides culture-specific formatting information. However, none of the properties of the NumberFormatInfo are used when formatting with the general numeric format specifier ("G").


The following example formats a 16-bit signed integer value by using several format providers, including one for the invariant culture. The output from the example illustrates that the formatted string returned by the ToString(IFormatProvider) method is the same regardless of the format provider.

Imports System.Globalization

Module Example
   Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      ' Define an array of CultureInfo objects.
      Dim ci() As CultureInfo = {New CultureInfo("en-US"), _
                                  New CultureInfo("fr-FR"), _
      Dim value As UInteger = 1870924
      outputBlock.Text += String.Format("  {0,12}   {1,12}   {2,12}", _
                        GetName(ci(0)), GetName(ci(1)), GetName(ci(2))) & vbCrLf
      outputBlock.Text += String.Format("  {0,12}   {1,12}   {2,12}", _
                        value.ToString(ci(0)), value.ToString(ci(1)), value.ToString(ci(2))) & vbCrLf

   End Sub

   Private Function GetName(ByVal ci As CultureInfo) As String
      If ci.Equals(CultureInfo.InvariantCulture) Then
         Return "Invariant"
         Return ci.Name
      End If
   End Function
End Module
' The example displays the following output:
'        en-US          fr-FR      Invariant
'      1870924        1870924        1870924
using System;
using System.Globalization;

public class Example
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
      // Define an array of CultureInfo objects.
      CultureInfo[] ci = { new CultureInfo("en-US"), 
                           new CultureInfo("fr-FR"), 
                           CultureInfo.InvariantCulture };
      uint value = 1870924;
      outputBlock.Text += String.Format("  {0,12}   {1,12}   {2,12}",
                        GetName(ci[0]), GetName(ci[1]), GetName(ci[2])) + "\n";
      outputBlock.Text += String.Format("  {0,12}   {1,12}   {2,12}",
                        value.ToString(ci[0]), value.ToString(ci[1]), value.ToString(ci[2])) + "\n";

   private static string GetName(CultureInfo ci)
      if (ci.Equals(CultureInfo.InvariantCulture))
         return "Invariant";
         return ci.Name;
// The example displays the following output:
//             en-US          fr-FR      Invariant
//           1870924        1870924        1870924

Version Information


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


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Change History




May 2010

Revised extensively.

Information enhancement.