protected void Page_Load(object sender, EventArgs e) { int id = Convert.ToInt32(Request.QueryString["ID"]); txtID.Text = id.ToString(); txtID.Enabled = false; if (Page.IsPostBack == false) { DataSet1TableAdapters.HOBILERTableAdapter dt = new DataSet1TableAdapters.HOBILERTableAdapter(); txtHobi.Text = dt.HobiGetir(Convert.ToInt32(id))[0].Hobi; } }