private void ClickAddHardApp(object sender, RoutedEventArgs e)
 {
     Models.Hardware hard = (sender as Button).DataContext as Models.Hardware;
     if (!hard.Apps.Contains(InHardApp.SelectedItem as Models.Application))
     {
         hard.Apps.Add(InHardApp.SelectedItem as Models.Application);
     }
     InHardApp.SelectedItem = null;
 }
 private void ClickAddHardDevice(object sender, RoutedEventArgs e)
 {
     Models.Hardware hard = (sender as Button).DataContext as Models.Hardware;
     hard.Devices.Add(new Models.Device());
 }