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InvalidateRequerySuggested on GUI Thread

| Tuesday, March 8, 2011
I've been having issues where buttons weren't getting enabled on my WPF application, only by clicking the form would they work.

I found that I need to force the refresh using CommandManager.InvalidateRequerySuggested but that didn't work, the reason being I wasn't on the GUI Thread, I was on another thread, so here is my little helper class to do it.

public static void RaiseInvalidateRequerySuggested()
     Dispatcher dispatcher = null;
     if (Application.Current != null)
         dispatcher = Application.Current.Dispatcher;
      if (dispatcher != null && !dispatcher.CheckAccess())

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