protected void RentalSelected_Click(object sender, ListViewCommandEventArgs e) { int rentalID = int.Parse(e.CommandArgument.ToString()); RentalID.Text = rentalID.ToString(); MessageUserControl.TryRun(() => { RentalController rntlmgr = new RentalController(); List <RentalDetail> rentals = rntlmgr.Get_RentalDetailsByRentalID(rentalID); RentalListListview.DataSource = rentals; RentalListListview.DataBind(); }, "Customer Selected", "Please select a rental by this customer"); CustomerList.DataBind(); //list rentals and display them same as did customers }