DispatchWrapper Class (System.Runtime.InteropServices)

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Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

DispatchWrapper Class

Wraps objects the marshaler should marshal as a VT_DISPATCH.

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

Syntax

Visual Basic (Declaration)

<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public NotInheritable Class DispatchWrapper

Visual Basic (Usage)

Dim instance As DispatchWrapper

[SerializableAttribute]
[ComVisibleAttribute(true)]
public sealed class DispatchWrapper

Visual C++

[SerializableAttribute]
[ComVisibleAttribute(true)]
public ref class DispatchWrapper sealed

JScript

public final class DispatchWrapper

Remarks

Use to wrap objects the marshaler should marshal as a VT_DISPATCH. This wrapper will force objects to be marshaled out as VT_DISPATCH. If the object does not support IDispatch then an exception will be thrown.

void MyMethod(Object o);
 Object o = new MyObject;
 MyMethod(o); //passes o as VT_UNKNOWN
 MyMethod(new DispatchWrapper(o)); //passes o as VT_DISPATCH

For more information on VT_DISPATCH, please see the existing documentation for VARENUM::VT_DISPATCH in the MSDN library.

Inheritance Hierarchy

System..::.Object
System.Runtime.InteropServices..::.DispatchWrapper

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

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

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.

Version Information

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0

Reference

DispatchWrapper Members

System.Runtime.InteropServices Namespace