protected void Page_Load(object sender, EventArgs e) { string toid = Request.QueryString["id"]; classid = 0; gnum(ref classid, "classid"); if (toid != null) id = Int32.Parse(toid); app = Request.QueryString["app"]; if (!IsPostBack) { ArticleClass dal = new ArticleClass(); classId.DataSource = dal.view_list(); classId.DataBind(); if (app == "edit") editArticle(id); } }