private bool PrepareResult()
{
var i = ListBoxPresets.SelectedIndex;
if (ThePresets != null && i >= 0 && i < ThePresets.Count)
{
this.ResultQualifier = ThePresets[i].qualifier;
return(true);
}
// uups
return(false);
}
private void ButtonClose_Click(object sender, RoutedEventArgs e)
{
this.ResultQualifier = null;
ControlClosed?.Invoke();
}