//功能实现
    public static void ToWord(System.Web.UI.Control ctl)
    {
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.Charset = "";
        HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=DocLibrary.doc");
        HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
        HttpContext.Current.Response.ContentType = "application/ms-word";
        ctl.Page.EnableViewState = false;
        System.IO.StringWriter tw = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
        ctl.RenderControl(hw);
        HttpContext.Current.Response.Write(tw.ToString());
        HttpContext.Current.Response.End();
    }
    //调用
    Tools.ToWord(this.div1);