How to call back to main thread to enable a button from a backgroundworker thread

Question

I have a background worker that gets called to do some work and in that background worker I want to enable a Button :

myButton.IsEnabled = true;

In my UI (main thread). What do I need to do to make thecall back to the main thread to do this?

Answer 1

If you have access to your object from the background worker thread you can dispatch the enabling of the button to your UI thread using Dispatcher.Invoke method like this :

Application.Current.Dispatcher.Invoke((Action)delegate()
{
    myButton.IsEnabled = true;
}, null);