Begins an asynchronous request to change to the parent of the current working directory on the server.
An IAsyncResult that references the asynchronous change.
You can create a callback method that implements the AsyncCallback delegate and pass its name to the BeginChangeWorkingDirectoryUp method. The state argument may be used to pass in data that will be passed to the callback method.
For more information please refer to the synchronous version of this method, ChangeWorkingDirectoryUp.