Based on Mark Monster's post here you're missing some lines of code in your beginGet method. It should be something like:
private void beginGet(string endpoint, OpenReadCompletedEventHandler callback){ WebRequest.RegisterPrefix("http://", System.Net.Browser.WebRequestCreator.ClientHttp); WebClient wc = new WebClient(); wc.Credentials = new NetworkCredential(username, password); wc.UseDefaultCredentials = false; wc.OpenReadCompleted += callback; wc.OpenReadAsync(new Uri(baseURL + endpoint));}Also, if you're just trying to get JSON from the server, you should be able to use DownloadStringAsync instead of OpenReadAsync which might simplify things.
