private void Connect_Click(object sender, RoutedEventArgs e) { var loginBox = new LoginBox(this.dataSource); var window = new Window { Title = "Connect to the Data Source", Content = loginBox, ResizeMode = ResizeMode.NoResize, SizeToContent = SizeToContent.WidthAndHeight, WindowStartupLocation = WindowStartupLocation.CenterScreen }; window.ShowDialog(); }