protected void Page_Load(object sender, EventArgs e) { if(!this.Page.IsPostBack) { ShowShop.BLL.SystemInfo.Provinces bll = new ShowShop.BLL.SystemInfo.Provinces(); int parentid = ChangeHope.WebPage.PageRequest.GetQueryInt("parentid"); if (parentid<0) { parentid = 0; } Response.Write(bll.GetChidNode(parentid.ToString())); } }