导入Excel：
   Response.Clear();
    Response.Buffer = true;
    Response.Charset = "GB2312";
    Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
    // 如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码！！！
    Response.ContentEncoding = System.Text.Encoding.UTF7;
    Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
    System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
    System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
    this.GridView1.RenderControl(oHtmlTextWriter);
    Response.Output.Write(oStringWriter.ToString());
    Response.Flush();
    Response.End();

导入Word：
   Response.Clear();
    Response.Buffer = true;
    Response.Charset = "GB2312";
    Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
    // 如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码！！！
    Response.ContentEncoding = System.Text.Encoding.UTF7;
    Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
    System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
    System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
    this.GridView1.RenderControl(oHtmlTextWriter);
    Response.Output.Write(oStringWriter.ToString());
    Response.Flush();
    Response.End();