WordToHTML

//在此处放置用户代码以初始化页面
Word.ApplicationClass word = new Word.ApplicationClass();
Type wordType = word.GetType();
Word.Documents docs = word.Documents;
//打开文件
Type docsType = docs.GetType();
Word.Document doc = (Word.Document)docsType.InvokeMember("Open", System.Reflection.BindingFlags.InvokeMethod, null, docs, new Object[] { wordFileName, true, true });
//转换格式，另存为
Type docType = doc.GetType();
string wordSaveFileName = wordFileName.ToString();
string strSaveFileName = wordSaveFileName.Substring(0, wordSaveFileName.Length - 4) + "html";
object saveFileName = (object)strSaveFileName;
docType.InvokeMember("SaveAs", System.Reflection.BindingFlags.InvokeMethod, null, doc, new object[] { saveFileName, Word.WdSaveFormat.wdFormatFilteredHTML });
docType.InvokeMember("Close", System.Reflection.BindingFlags.InvokeMethod, null, doc, null);
//退出 Word
wordType.InvokeMember("Quit", System.Reflection.BindingFlags.InvokeMethod, null, word, null);
return saveFileName.ToString();

WordToHTML

原文：http://www.cnblogs.com/dylanzhuo/p/5057794.html