private void frm_PurchaseForm_Load(object sender, EventArgs e) { cmb_Category.DataSource = _a.FillCategory(); cmb_PayMode.SelectedIndex = 0; if (BillType == "Update") { pnl_OldPay.Visible = true; Date = Convert.ToDateTime(CustomerBill.Rows[0]["Date"].ToString()); dtp_Date.Value = Date; } else { dt_cust = _Cust.GetCustomerDeatils(); this.BringToFront(); cmb_Name.DataSource = dt_cust; cmb_SalesPerson.DataSource = _common.GetSalesPerson(); cmb_Name.Select(); Clear(); Masterclear(); } }