asp.net控制word~~~~急 - .NET技术 / ASP.NET

我主要想控制下word保存的地址，但是编译不过去，总觉得是缺了using。。。

谢谢

代码如下：
using System;
using System.IO;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.OracleClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

//-------------------------------------------------

  object Missing = Type.Missing;

  string strTemp = "doc/test.doc"; 
  string newFileName = "doc/test2.doc";
  Application WordApp = new ApplicationClass();
  //必须设置为不可见
  WordApp.Visible = false;

  try
  {
  //创建以strTemp为模板的文档
  object oTemplate = Server.MapPath(strTemp);
  Document WordDoc = WordApp.Documents.Add(ref oTemplate, ref Missing, ref Missing, ref Missing);
  WordDoc.Activate();//这两个红色的地方都报错，缺少using

   

  //保存为新文件
  object oNewFileName = Server.MapPath(newFileName);
  WordDoc.SaveAs(ref oNe