Why is my GUI freezing?

Question

I\'m new in TPL world, and I did that code:

    var myItems = myWpfDataGrid.SelectedItems;

    this.Dispatcher.BeginInvoke(new Action(() =>
    {
                


        

Answer 1

I had a hunch that something working with serial port would try to use application's event loop to do it's work. So it actually bypasses the whole dispatcher and thread system and blocks the application. I'm not experienced in this field so I don't know how to solve it, but this is different question.