private void btnAddCar_Click(object sender, EventArgs e)
        {
            try
            {
                if (mlCustomerID == 0)
                {
                    throw new Exception("请先保存客户资料,再添加车辆!");
                }

                frmCarEdit frmCar = new frmCarEdit(0);
                LBShowForm.ShowDialog(frmCar);
                LoadCarDataSource();
            }
            catch (Exception ex)
            {
                LB.WinFunction.LBCommonHelper.DealWithErrorMessage(ex);
            }
        }
        private void GrdCar_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            try
            {
                if (e.RowIndex >= 0 && e.ColumnIndex >= 0)
                {
                    DataRowView drvSelect = this.grdCar.Rows[e.RowIndex].DataBoundItem as DataRowView;
                    long        lCarID    = drvSelect["CarID"] == DBNull.Value ?
                                            0 : Convert.ToInt64(drvSelect["CarID"]);
                    if (lCarID > 0)
                    {
                        frmCarEdit frmCar = new frmCarEdit(lCarID);
                        LBShowForm.ShowDialog(frmCar);

                        LoadCarDataSource();
                    }
                }
            }
            catch (Exception ex)
            {
                LB.WinFunction.LBCommonHelper.DealWithErrorMessage(ex);
            }
        }