Windows Phone: how to tell when Deployment.Current.Dispatcher.BeginInvoke has completed?

Question

I\'m trying to make the UI of a page in a WP7 application more responsive by putting the data loading portion into a background thread rather than running in the foreground

Answer 1

It's very easy ;)

// must be executed in background
foreach (Item item in Items)
{
    EventWaitHandle Wait = new AutoResetEvent(false);
    Deployment.Current.Dispatcher.BeginInvoke(() =>
    {
        _events.Add(_newItem);
        Wait.Set();
    });
    // wait while item is added on UI
    Wait.WaitOne();
}
// here all items are added

This approach you can use everywhere where you need synchronize background and UI thread execution