Object obj = System.Reflection.Missing.Value;
//取得Word文件保存路径
object fileName = @File1.Value;
//创建一个名为WordApp的组件对象
Word._Application WordApp = new Word.ApplicationClass();
//创建一个名为WordDoc的文档对象
Word.Document WordDoc = WordApp.Documents.Add(ref obj,ref obj ,ref obj ,ref obj);
=============
换成这个试试看