private void cbPlatforms_SelectionChanged(object sender, SelectionChangedEventArgs e) { if (cbPlatforms.SelectedItem != null) { WP7SDK = dsmgrObj.GetPlatforms().Single(p => p.Name == cbPlatforms.SelectedItem.ToString()); cbDevices.Items.Clear(); foreach (Device d in WP7SDK.GetDevices()) cbDevices.Items.Add(d.Name); if (cbDevices.Items.Count > 0) cbDevices.SelectedIndex = 0; } }