Question

I developed a class (in C#) for sending and receiving messages over network. It creates a new thread (listener thread) which waits till a new message arrives then raises an event.
The problem is the event is raised in the listener thread and when I want to use this class in a wpf application, a run-time error occurs trying to handle the event
The error is:The calling thread cannot access this object because a different thread owns it.

Is there any proper way to deal with this situation when the event raises in the mentioned class?

Answer 1

You’ve got to be on the UI thread to update UI objects. You can use the window’s Dispatcher to execute code there:

this.Dispatcher.Invoke(new Action(() =>
{
    // Code that updates UI here
}));