protected void lstRoles_SelectedIndexChanged(object sender, EventArgs e) { //string userid=Request.Params.Get("id"); string userid = Session["id"] != null ? Session["id"].ToString() : ""; MainSecurity objscu = new MainSecurity(); //lay thong tin ve chuyen muc cua thang hien tai lstCat.DataTextField = "Cat_Name"; lstCat.DataValueField = "Cat_ID"; lstCat.DataSource = objscu.GetCategoryByRoleAsTable(userid, Int32.Parse(lstRoles.SelectedValue)); lstCat.DataBind(); //lay thong tin ve toan bo quyen lstPer.DataSource = objscu.GetPermissionAsTable(userid, 1, -1); lstPer.DataTextField = "Permission_Name"; lstPer.DataValueField = "Permission_ID"; lstPer.DataBind(); }