Waits for the pending asynchronous unload operation to complete.
Assembly: System.Activities (in System.Activities.dll)
This method can be called to determine whether a BeginUnload() operation was successful. If called before the unload operation completes, it blocks until the operation is complete.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.