public void AuthorizeTwitter() { AuthorizeWindow window = new AuthorizeWindow(); AuthorizeWindowViewModel viewmodel = new AuthorizeWindowViewModel(this._mainWindowViewModel, Internal.ServiceType.Twitter); window.DataContext = viewmodel; window.Owner = this.Dialog; window.WindowStartupLocation = System.Windows.WindowStartupLocation.CenterOwner; window.ShowDialog(); if (String.IsNullOrEmpty(Settings.Settings.TwitterScreenName)) { this.TwitterScreenName = "Not Connected"; } else { this.TwitterScreenName = "@" + Settings.Settings.TwitterScreenName; } }