Update UI thread from portable class library

Question

I have an MVVM Cross application running on Windows Phone 8 which I recently ported across to using Portable Class Libraries.

The view models are within the portable

Answer 1

Another option that could be easier is to store a reference to SynchronizationContext.Current in your class's constructor. Then, later on, you can use _context.Post(() => ...) to invoke on the context -- which is the UI thread in WPF/WinRT/SL.

class MyViewModel
{
   private readonly SynchronizationContext _context;
   public MyViewModel()
   {
      _context = SynchronizationContext.Current.
   }

   private void MyCallbackOnAnotherThread()
   {
      _context.Post(() => UpdateTheUi());
   }
}