protected void btnDelete_Click(object sender, EventArgs e) { if (!String.IsNullOrEmpty(hfId.Value)) { try { CustomerFacade facade = new CustomerFacade(); int id = Convert.ToInt32(hfId.Value); facade.Delete(id); gvCustomers.DataBind(); lblErrorMessage.Text = Helper.DeleteRecordMessage(true); } catch (Exception exception) { lblErrorMessage.Text = Helper.DeleteRecordMessage(false); } } }