protected void btnSave_Click(object sender, EventArgs e) { string interval = txtInterval.Text; SqlOperation op = new SqlOperation(); try { op.saveInterval(interval, int.Parse(Session["userid"].ToString())); ClientScript.RegisterStartupScript(typeof(Page), "MessagePopUp", "<script language='JavaScript'>alert('Update successful.');</script>"); } catch (Exception ex) { Debug.Print(ex.Message); ClientScript.RegisterStartupScript(typeof(Page), "MessagePopUp", "<script language='JavaScript'>alert('Update failed.');</script>"); } }