UnknownWrapper Class

Wraps objects the marshaler should marshal as a VT_UNKNOWN.

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

public sealed class UnknownWrapper
/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public final class UnknownWrapper
public final class UnknownWrapper

Only applies when the managed signature of a method takes an object.

 int MyMethod(Object o); //Managed signature
     HRESULT MyMethod(VARIANT o); //COM signature
     MyObject o = new MyObject();
     MyMethod(o); //o gets passed as VARIANT VT_DISPATCH
     MyMethod(new UnknownWrapper(o)); //o gets passed as VARIANT VT_UNKNOWN


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 CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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

.NET Compact Framework

Supported in: 2.0