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IDispatchConstantAttribute Class

Indicates that the default value for the attributed field or parameter is an instance of DispatchWrapper, where the WrappedObject is a null reference (Nothing in Visual Basic).

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

[SerializableAttribute] 
[AttributeUsageAttribute(AttributeTargets.Field|AttributeTargets.Parameter, Inherited=false)] 
[ComVisibleAttribute(true)] 
public sealed class IDispatchConstantAttribute : CustomConstantAttribute
/** @attribute SerializableAttribute() */ 
/** @attribute AttributeUsageAttribute(AttributeTargets.Field|AttributeTargets.Parameter, Inherited=false) */ 
/** @attribute ComVisibleAttribute(true) */ 
public final class IDispatchConstantAttribute extends CustomConstantAttribute
SerializableAttribute 
AttributeUsageAttribute(AttributeTargets.Field|AttributeTargets.Parameter, Inherited=false) 
ComVisibleAttribute(true) 
public final class IDispatchConstantAttribute extends CustomConstantAttribute

You can apply this attribute to fields or parameters.

The type library importer uses this attribute to distinguish a default value of type VT_DISPATCH from a null reference (Nothing in Visual Basic).

For more information about constant attributes, see the CustomConstantAttribute class.

The classes in System.Runtime.CompilerServices are for compiler writers use only.

System.Object
   System.Attribute
     System.Runtime.CompilerServices.CustomConstantAttribute
      System.Runtime.CompilerServices.IDispatchConstantAttribute
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0
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