Excel导出（从GridView）

private void ToExcel(GridView gv)

    {

        Response.Clear();

        Response.Charset = "UTF-8";

        Response.ContentEncoding = System.Text.Encoding.UTF8;//设置输出流为简体中文

 

        Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。

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

        //this.EnableViewState = false;

       

 

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

        System.Web.UI.HtmlTextWriter htmlWriter = new HtmlTextWriter(strWriter);

 

 

        gv.RenderControl(htmlWriter);

        Response.Output.Write(strWriter.ToString());

        Response.End();

    }