protected void btnPastOrders_Click(object sender, EventArgs e) { UserAccount user = (UserAccount)Session["UserAccountObj"]; OrdersBLL ordersBLL = new OrdersBLL(); DataTable dt = new DataTable(); dt = ordersBLL.DoRetrieveCustomerCompletedOrder(user.UserId); gv_pastOrders.DataSource = dt; gv_pastOrders.DataBind(); gv_pastOrders.Visible = true; }