private void ClearGridRows(DataGridView gridControl)
 {
     if (gridControl.InvokeRequired)
     {
         ClearGrid c = ClearGridRows;
         Invoke(c, gridControl);
     }
     else
     {
         gridControl.Rows.Clear();
     }
 }
 private void ClearGridRows(DataGridView gridControl)
 {
     if (gridControl.InvokeRequired)
     {
         ClearGrid c = new ClearGrid(ClearGridRows);
         this.Invoke(c, new object[] { gridControl });
     }
     else
     {
         gridControl.Rows.Clear();
     }
 }