js 向后台程序传递参数

js:

str += "<img class=/"s/" src=/"/images/s.gif/">" + title + "   <a href=javascript:__doPostBack('lkbAdd','" + doid + "')>编辑</a> <a href=javascript:__doPostBack('lkbDel','" + doid + "')>删除</a>";

后台接收：

string argument;
        DataTable dtType;
        protected void Page_Load(object sender, EventArgs e)
        {
            argument = Request.Params["__EVENTARGUMENT"];
        }