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AttributeUsageAttribute Constructor

Initializes a new instance of the AttributeUsageAttribute class with the specified list of AttributeTargets, the AllowMultiple value, and the Inherited value.

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

public AttributeUsageAttribute(
	AttributeTargets validOn
)

Parameters

validOn
Type: System.AttributeTargets

The set of values combined using a bitwise OR operation to indicate which program elements are valid.

You can combine several AttributeTargets values using a bitwise OR operation to get the desired combination of valid program elements.

For default property values, see the ValidOn, AllowMultiple, and Inherited properties.

The definition of the DispId attribute illustrates the use of a bitwise OR operation to combine several AttributeTargets values.

namespace System.Runtime.InteropServices
{
   [AttributeUsage(AttributeTargets.Method | AttributeTargets.Field |
    AttributeTargets.Property)]
   public class DispIdAttribute: System.Attribute
   {
      public DispIdAttribute(int value) {
        // . . .
      }

      public int Value {
         get {
            // . . . 
            return 0;
         }
      }
   }
}

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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