//adds or removes a tag from one or more instruments
private async void SetTag_ItemClick(object sender, RoutedEventArgs routedEventArgs)
{
var selectedInstruments = InstrumentsGrid.SelectedItems;
var btn = (MenuItem)routedEventArgs.Source;
int tagID = (int)btn.Tag;
var tagResponse = await _client.GetTags().ConfigureAwait(true);
if (!tagResponse.WasSuccessful)
{
await this.ShowMessageAsync("Error", string.Join("\n", tagResponse.Errors)).ConfigureAwait(true);
return;
}
var tag = tagResponse.Result.FirstOrDefault(x => x.ID == tagID);
if (tag == null)
{
await this.ShowMessageAsync("Error", "Could not find tag on the server").ConfigureAwait(true);
return;
}
//one instrument selected
foreach (Instrument instrument in selectedInstruments)
{
if (btn.IsChecked)
{
instrument.Tags.Add(tag);
}
else
{
instrument.Tags.Remove(tag);
}
await _client.UpdateInstrument(instrument).ConfigureAwait(true);
}
CollectionViewSource.GetDefaultView(InstrumentsGrid.ItemsSource).Refresh();
}