gridview 导出成excel或word文件

protected void Button1_Click(object sender, EventArgs e)
{ 

Export("application/ms-excel", "学生成绩报表.xls"); //ms-doc 导出成word

}

private void Export(string FileType, string FileName)
    {
        //以下三行可选，如果没有的话导出的只是当前页数据，没有其他页数据
       // GridView1.AllowPaging = false;
        //GridView1.AllowSorting = false;
       // gridviewdatabind(); //这里是你绑定gridview的方法
        Response.Charset = "UTF-8";
        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;
        System.IO.StringWriter tw = new System.IO.StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(tw);
        GridView1.RenderControl(hw);
        Response.Write(tw.ToString());
        Response.End();
    }