关于asp.net导出excel的注意（3）

当导出excle时，如果数据不多，中文能正常显示，如果数据太多，中文变乱码

  Response.AppendHeader("Content-Disposition", "attachment;filename=" + "result.xls");

                                   

            Response.ContentType = "application/vnd.ms-excel";   

           Response.ContentEncoding=System.Text.Encoding.GetEncoding("utf-8");

 

            this.EnableViewState = false;

            System.IO.StringWriter tw = new System.IO.StringWriter();

 

            System.Web.UI.HtmlTextWriter hw = new HtmlTextWriter(tw);

 

            grdList.RenderControl(hw);

 

            Response.Write(tw.ToString());

            Response.End();

 

把utf-8改成utf-7就一切正常了。具体原因不明