protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { if (Request.QueryString["id"] != "" && Request.QueryString["id"] != null) { bl.id = Convert.ToInt32(Request.QueryString["id"].ToString()); DataSet ds = new DataSet(); ds = dl.edit_expence(bl); if (ds.Tables[0].Rows.Count > 0) { txt_expence.Text = ds.Tables[0].Rows[0]["ex_name"].ToString(); Button1.Visible = false; Button2.Visible = true; } } grid(); } }