gridview导出数据至Excel office2007、2010打开乱码

原来代码

gvMonograph.DataBind();
        Response.Charset = "GB2312";
        Response.ContentEncoding = System.Text.Encoding.UTF7;
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8).ToString());
        Response.ContentType = FileType;
        this.EnableViewState = false;
        StringWriter tw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(tw);
        gvMonograph.RenderControl(hw);
        Response.Write(tw.ToString());
        Response.End();

 需要更改一个地方也就是Response.ContentEncoding = System.Text.Encoding.UTF7;
为Response.ContentEncoding = System.Text.Encoding.UTF8; 后即可在2007 2010下正常打开

改后代码：

gvMonograph.DataBind();
        Response.Charset = "GB2312";
        Response.ContentEncoding = System.Text.Encoding.UTF8;
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8).ToString());
        Response.ContentType = FileType;
        this.EnableViewState = false;
        StringWriter tw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(tw);
        gvMonograph.RenderControl(hw);
        Response.Write(tw.ToString());
        Response.End();