private void btnDelete_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
 {
     if (grdViewCar.RowCount - 1 != grdViewCar.FocusedRowHandle)
     {
         return;
     }
     if (MessageBox.Show("Do You want to Delete?", "Car Park", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
     {
         iSlots = Convert.ToInt32(CommFun.IsNullCheck(txtSlots.Text, CommFun.datatypes.vartypenumeric));
         iSlots = iSlots - 1;
         if (iSlots < 0)
         {
             iSlots = 0;
         }
         UnitDirBL.DeleteCarSlots(m_iCCId, iBlockId, iTypeId, Convert.ToInt32(grdViewCar.GetFocusedRowCellValue("SlotNo")));
         grdViewCar.DeleteSelectedRows();
         txtSlots.EditValue = iSlots;
     }
 }