asp 利用word模板生成word

在此之前需添加引用
using System.Reflection;
using System.IO;
using Microsoft.Office.Interop.Word;
using Microsoft.Office.Tools.Word;
using Word = Microsoft.Office.Interop.Word; 

代码：
                Word.Application app;
                Word.Document doc;
                string TemplateFile = "";//模板文件的文件名
                string FileName = "";   //新文件的路径名
                string Fname = "";     //新文件文件名
                app = new Word.Application();
                doc = new Word.Document();
                TemplateFile = Server.MapPath("~/zujuan/test1.dot");
                Fname = DateTime.Now.ToString("yyyymmddhhmmss") + ".doc";
                FileName = Server.MapPath("~/zujuan/" + Fname);
                //模板文件拷贝到新文件
                File.Copy(TemplateFile, FileName);
                object Obj_FileName = FileName;
                object Visible = false;
                object ReadOnly = false;
                object missing = System.Reflection.Missing.Value;
                doc = app.Documents.Open(ref Obj_FileName, ref missing, ref missing, ref missing,
                  ref missing, ref missing, ref missing, ref missing,
                 ref missing, ref missing, ref missing, ref Visible,
                 ref missing, ref missing, ref missing,
                 ref missing);// ReadOnly
                doc.Activate();