protected void Page_Load(object sender, EventArgs e)
        {
            Control mycontrol = Page.LoadControl(Request.ApplicationPath + "11.ascx");
            StringWriter tw = new StringWriter();
            HtmlTextWriter writer = new HtmlTextWriter(tw);
            mycontrol.RenderControl(writer);
            if (writer.InnerWriter.ToString() == "这里是ascx文件生成的html代码")
            {
                Response.Write("成功");
            }
            else
            {
                Response.Write("失败");
            }        }为什么读取不到ascx控件生成的html代码?