Completes the asynchronous operation started in BeginChangeWorkingDirectoryUp.
true if the directory was changed successfully.
Before calling BeginChangeWorkingDirectoryUp, you need to create a callback method that implements the AsyncCallback delegate. This callback method executes in a separate thread and is called by the system after BeginChangeWorkingDirectoryUp returns. The callback method must accept the IAsyncResult returned by the BeginChangeWorkingDirectoryUp method as a parameter. This parameter may then be passed to the EndChangeWorkingDirectoryUp method to complete the operation.