private void Item_ItemClicked(object sender, ItemClickedEventArgs e)
 {
     if (e.MouseButtonEventArgs.ChangedButton == MouseButton.Left)
     {
         OnItemClicked(e);
         if (string.IsNullOrEmpty(SB.Text))
         {
             SB.ClearText();
         }
     }
 }
 protected virtual void OnItemClicked(ItemClickedEventArgs e)
 {
     ItemClicked?.Invoke(this, e);
 }