asp.net 根据word模板填充数据然后下载

我在做这个功能时，参考了好多网上的文章，后面自己摸索调试做出来的

cs:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;

using MSWord = Microsoft.Office.Interop.Word;
using Microsoft.Office.Interop.Word;

using System.Reflection;

           string TemplateFile = @"D:/net/test/doc_word/xcbl.doc"; //模版文件的路径,

           string fname = DateTime.Now.ToString("yyyyMMddHHmmssffffff") + ".doc";//新文件名
           string FileName = @"D:/net/test1/test/" + fname;//新文件的路径         
           string path = Server.MapPath("/test1/" + fname);

           if (!File.Exists(TemplateFile))
           {