protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) { if (e.CommandName == "return") { BorrowRepository repo = new BorrowRepository(); List <MRSLibrary.CustomizeDisplay.BorrowReturned> br = new List <MRSLibrary.CustomizeDisplay.BorrowReturned>(); long id = Convert.ToInt64(e.CommandArgument); repo.ReturnMovieForBorrow(id); br = repo.GetReturnedData(id); DetailsView1.DataSource = br; DetailsView1.DataBind(); } }