public void loadData() { try { DataTable dtOrderDetails = new DataTable(); dtOrderDetails = _objOrders.getOrderDetails(invoiceNo); if (dtOrderDetails != null && dtOrderDetails.Rows.Count > 0) { dataGridView1.DataSource = dtOrderDetails; lblTotalValue.Text = dtOrderDetails.Rows[0]["TotalPrice"].ToString(); } } catch (Exception) { throw; } }