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Returns TRUE if a previously memoized object associated with the specified key is found.
[Visual Basic .NET]
Public Function Exists ( _
ByVal vtKey As Object _
) As Boolean
[C#]
public bool Exists (
object vtKey
);
[C++]
HRESULT Exists(
VARIANT vtKey
);
[C++] Parameters vtKey [in]
vtKey is a parameter of type VARIANT