protected void AddListener()
		{
			backup = new TraceListenerBackup();
			backup.Reset();
			listener = backup.AddTestTraceListener();
		}
		public void SetUp()
		{
			backup = new TraceListenerBackup();
			listener = backup.AddTestTraceListener();
		}
		public TestTraceListener AddTestTraceListener()
		{
			TestTraceListener listener = new TestTraceListener();
			Trace.Listeners.Add(listener);
			return listener;
		}