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CultureInfo.IsReadOnly Property

Gets a value indicating whether the current CultureInfo is read-only.

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

public bool IsReadOnly { get; }

Property Value

Type: System.Boolean
true if the current CultureInfo is read-only; otherwise, false. The default is false.

If the CultureInfo is read-only, the DateTimeFormat and NumberFormat instances are also read-only.

The following code example shows that IsReadOnly also helps protect the DateTimeFormatInfo and NumberFormatInfo instances associated with the CultureInfo.

using System;
using System.Globalization;


public class SamplesCultureInfo  {

   public static void Main()  {

      // Creates a CultureInfo.
      CultureInfo myCI = new CultureInfo( "en-US" );

      // Creates a read-only CultureInfo based on myCI.
      CultureInfo myReadOnlyCI = CultureInfo.ReadOnly( myCI );

      // Display the read-only status of each CultureInfo and their DateTimeFormat and NumberFormat properties.
      Console.WriteLine( "myCI is {0}.", myCI.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myCI.DateTimeFormat is {0}.", myCI.DateTimeFormat.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myCI.NumberFormat is {0}.", myCI.NumberFormat.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myReadOnlyCI is {0}.", myReadOnlyCI.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myReadOnlyCI.DateTimeFormat is {0}.", myReadOnlyCI.DateTimeFormat.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myReadOnlyCI.NumberFormat is {0}.", myReadOnlyCI.NumberFormat.IsReadOnly ? "read only" : "writable" );

   }

}

/*
This code produces the following output.

myCI is writable.
myCI.DateTimeFormat is writable.
myCI.NumberFormat is writable.
myReadOnlyCI is read only.
myReadOnlyCI.DateTimeFormat is read only.
myReadOnlyCI.NumberFormat is read only.

*/

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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