private void tabShape_SelectedItemChanged(object sender, C1.WPF.Core.PropertyChangedEventArgs <object> e)
 {
     try
     {
         C1TabItemShape val = (C1TabItemShape)Enum.Parse(typeof(C1TabItemShape), (e.NewValue as C1ComboBoxItem).Content as string);
         if (c1Tab != null)
         {
             foreach (C1TabItem item in c1Tab.Items)
             {
                 item.TabShape = val;
             }
         }
     } catch { }
 }
 private void UpdatePlacementCombo(C1TabItemShape shape)
 {
 }