private void moveItems(ASPxListBox targetlistBox, ASPxListBox sourcelistBox)
 {
     for (int i = 0; i < sourcelistBox.SelectedItems.Count; i++)
     {
         targetlistBox.Items.Add(sourcelistBox.SelectedItems[i]);
     }
     targetlistBox.UnselectAll();
     sourcelistBox.UnselectAll();
 }