protected void btnBorrowid_Click(object sender, EventArgs e) { BorrowRepository br = new BorrowRepository(); MRSLibrary.Database.BorrowTable lst = new MRSLibrary.Database.BorrowTable(); lst = br.GetBorrowForBorrowID(Convert.ToInt32(txtBorrowid.Text)); if (lst == null) { Label4.Visible = true; GridView1.Visible = false; } else { Label4.Visible = false; GridView1.DataSource = lst; GridView1.DataBind(); } }