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UnknownWrapper Class

Wraps objects the marshaler should marshal as a VT_UNKNOWN.

System.Object
  System.Runtime.InteropServices.UnknownWrapper

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

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

The UnknownWrapper type exposes the following members.

  NameDescription
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsUnknownWrapperInitializes a new instance of the UnknownWrapper class with the object to be wrapped.
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  NameDescription
Public propertySupported by Portable Class LibrarySupported in .NET for Windows Store appsWrappedObjectGets the object contained by this wrapper.
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  NameDescription
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToStringReturns a string that represents the current object. (Inherited from Object.)
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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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Obsolete (compiler warning) in Windows Phone 8.1

Windows Phone 8.1, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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