GridView导出

    /// <summary>
    /// 导出文件
    /// </summary>
    /// <param name="FileType">导出文件的类型，如:"application/ms-excel"</param>
    /// <param name="FileName">导出文件的名称,"报表.xls"</param>
    /// <param name="gv">从gridview导出</param>
    private void Export(string FileType, string FileName,GridView gv)
    {
        try
        {
            Response.Charset = "GB2312";
            Response.ContentEncoding = System.Text.Encoding.UTF7;       // 如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码！！！
            Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8).ToString());       //防止中文文件名乱码
            Response.ContentType = FileType;        //导出的文件类型,表格 application/ms-excel，文档 application/ms-word
            this.EnableViewState = false;
            System.IO.StringWriter tw = new System.IO.StringWriter();
            HtmlTextWriter hw = new HtmlTextWriter(tw);
            gv.RenderControl(hw);
            Response.Write(tw.ToString());
            Response.End();
        }
        catch (Exception ex)
        {
            Response.Write("<script language=javascript>alert('导出数据出错！" + ex.Message + "')</script>");
        }
    } 
    //必须的，否则会报错
    public override void VerifyRenderingInServerForm(Control control)
    {
        // base.VerifyRenderingInServerForm(control);
    }