C# word转换成HTML

C# word转换成HTML
添加com引用Microsoft word 11.0 Object Library
添加using System.Threading;using System.IO;
       //实例化一个Word
        Microsoft.Office.Interop.Word.ApplicationClass appclass = new Microsoft.Office.Interop.Word.ApplicationClass();
       Type wordtype = appclass.GetType();
       
        Microsoft.Office.Interop.Word.Documents docs = appclass.Documents;//获取Document
        Type docstype = docs.GetType();
        object filename = @"E:\AA.doc";//Word文件的路径
        Microsoft.Office.Interop.Word.Document doc = (Microsoft.Office.Interop.Word.Document)docstype.InvokeMember("Open", System.Reflection.BindingFlags.InvokeMethod, null, docs, new object[] { filename, true, true });//打开文件
        Type doctype = doc.GetType();
        object savefilename = @"E:\bb.html";//生成HTML的路径和名子
        doctype.InvokeMember("SaveAs", System.Reflection.BindingFlags.InvokeMethod, null, doc, new object[] { savefilename, Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatHTML });//另存为Html格式
       
wordtype.InvokeMember("Quit", System.Reflection.BindingFlags.InvokeMethod, null, appclass, null);//退出
       
        Thread.Sleep(3000);//为了使退出完全，这里阻塞3秒
        StreamReader objreader = new StreamReader(savefilename.ToString(), System.Text.Encoding.GetEncoding("GB2312")); 
       //以下内容是为了在Html中加入对本身Word文件的下载