protected void Button1_Click(object sender, EventArgs e) { if ((Boolean)Session["user"] == false) { Response.Redirect("login.aspx"); } else { int? idten = null; string ten = Session["ten"].ToString(); dt.lay(ten, ref idten); Txtnd.Text = (Txtnd.Text).Trim(); dt.Binhluan_Insert(Txtnd.Text, Convert.ToInt32(Request["id"]), idten, DateTime.Now); } }