void LoadExpandedMasterRows()
 {
     for (int i = 0; i < gridControl.DataController.ListSourceRowCount; i++)
     {
         var rowHandle = gridControl.GetRowHandleByListIndex(i);
         gridControl.CollapseMasterRow(rowHandle);
     }
     foreach (var key in MasterRowList)
     {
         var test    = GetRowHandleByKey(key);
         var datarow = gridControl.DataController.GetRow(0);
         gridControl.ExpandMasterRow(GetRowHandleByKey(key));
     }
 }