GridView 导出Excel或Word

    /// <summary>
    /// GridView 导出 Excel或Word
    /// </summary>
    /// <param name="gv"></param>
    /// <param name="fileType">文件类型</param>
    /// <param name="fileName">文件名</param>
    private void Exprot(GridView gv,String fileType, String fileName)
    {
        Response.Clear();
        Response.BufferOutput = true;
        //设定输出字符集  
        Response.Charset = "GB2312";
        Response.ContentEncoding = System.Text.Encoding.UTF8;
        Response.AppendHeader("Content-Disposition", "attachment;filename="
        + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
        //设置输出流HttpMiME类型(导出文件格式)  
        Response.ContentType = fileType;
        //关闭ViewState  
        Page.EnableViewState = false;
        System.IO.StringWriter sw = new System.IO.StringWriter();
        HtmlTextWriter textWriter = new HtmlTextWriter(sw);
        gv.RenderControl(textWriter);
        //把HTML写回游览器  
        Response.Write(stringWriter.ToString());
        Response.End();
        Response.Flush();
    }

   //重写此方法
    public override void VerifyRenderingInServerForm(Control control)
    {
        /*
        * asp.net2.0设置了内部变量控制RenderControl不允许在Render方法之外被轻易调用。 
        * 如果不override VerifyRenderingInServerForm就会报错。 
        * 我们override void VerifyRenderingInServerForm(Control control)这个方法， 
        * 里面不写任何代码即可*/
        //base.VerifyRenderingInServerForm(control);  
    }