/// <summary>
/// Handles mouse up event sent from adorner
/// </summary>
/// <param name="sender">The adorner</param>
/// <param name="e">The event args</param>
private void AdornerMouseUp(object sender, MouseButtonEventArgs e)
{
RubberbandAdorner adorner = (RubberbandAdorner)sender;
// remove adorner from adorner layer
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
adornerLayer?.Remove(adorner);
if (this.mode != SelectionRectnagleModes.Selection)
{
TemplateViewModel context = (TemplateViewModel)this.DataContext;
context.AddQuestion(adorner.Rectangle);
}
}