BackgroundWorker - Cross-thread operation not valid

Question

I have a winform application (one form), on this form there is a RichTextBox. In the constructor of this form I create an instance of the class MyClass. In the

Answer 1

i think the error stops on this line:

richtextBox.Text.Add("MyText");

your question i similar to this:

BackgroundWorker OnWorkCompleted throws cross-thread exception