How do I refresh visual control properties (TextBlock.text) set inside a loop?

Question

With each loop iteration, I want to visually update the text of a textblock. My problem is that the WPF window or control does not visually refresh until the loop is complet

Answer 1

for (int i = 0; i < 50; i++)
{
    System.Threading.Thread.Sleep(100);
    myTextBlock.Text = i.ToString();                
}

Running the above code inside a background worker component and using a binding updatesourcetrigeer as propertychanged will reflect the changes immediately in the UI control.