WindowsDriver.cs sporadically triggering 'System.IndexOutOfRange' errors

[dkim-epic]

When trying to run a worker (framework copied from the BackgroundWorker UICatalog example) my application will seem to sporadically cause a 'System.IndexOutOfRangeException' that, while crashing the current running application, will sometimes go away if I just restart and rerun my code a few times.

Attached is a screenshot of the error's call stack and my code/class that I'm launching the Dialog box that seems to be triggering the error. I struggled to paste the code in a readable format so I attached it here.

BackgroundWorkerCode.txt

Error:

While the error does show from the OutputBuffer array, I've also seen it from the contents array:

(From WindowsDriver.cs)

[tznind]

When you access UI code from a thread make sure to use Application.MainLoop.Invoke

For example

Application.Init ();


Task.Run (() => {
	// Runs on another Thread
	Task.Delay (5000).Wait ();

	// Invoke the action onto main UI thread
	Application.MainLoop.Invoke (() => {

		// Your UI code here
		MessageBox.Query ("Heya", "Hey", "ok");
		
	});
});

Application.Run (new Window("yar"));
Application.Shutdown ();

[dkim-epic]

Thank you!
I added the MainLoop.Invoke wrapper around any logging my child programs do and then after removing the Application.Refresh() method, I've stopped seeing the error!
*Without removing Application.Refresh() I would still get IndexOutOfBound errors.

[BDisp]

Because you was forcing the app refreshing on a non UI thread. Thus calling MainLoop.Invoke will handle the refresh itself. Only to remind that sometimes you need to call SetNeedsDisplay method in the case where the action doesn't call it.

[dkim-epic]

Thanks for the extra context, that definitely helps explain why I was triggering the error.
I appreciate all of the help!