最近在做word文件線上瀏覽，找了種種方法、控制元件之後，迴歸到word轉HTML，線上瀏覽....

一下是後臺程式碼，前臺html頁面預設程式碼即可。

因為用檔案如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using Word = Microsoft.Office.Interop.Word;

using Word = Microsoft.Office.Interop.Word;
 

這時需要在引用裡面引用元件.net下的Microsoft.Office.Interop.Visio，Microsoft.Office.Interop.Word

後臺程式碼如下：

  protected void Page_Load(object sender, EventArgs e)
        {
            string relativePath = Request.QueryString["FilePath"]; //相對路徑 ，從跳轉頁面得到檔案相對路徑。
            if (relativePath == "" || relativePath==null) return;
            string serverPath = Server.MapPath(relativePath);  //相對轉伺服器對應路徑
            string html = serverPath.Replace(".doc", ".html");

            if (!File.Exists(@html)) //html頁面不存在,把word轉換成html
            {
                string filename = WordToHtml(serverPath);
                StreamReader fread = new StreamReader(filename, System.Text.Encoding.GetEncoding("gb2312"));
                string ss = fread.ReadToEnd();
                Response.Write(ss); //直接寫字串到網頁會發現，文字可顯示，圖片、表格無法顯示。因此在後面重跳轉到html檔案頁面。
                fread.Close();
                fread.Dispose();
            }

            html = relativePath.Replace(".doc", ".html"); 
                               //html檔案也儲存在同樣的路徑下，
                              //只需要改了原路徑的字尾即可得到html檔案路徑
            Response.Redirect(html);
            return;
        }

         /// <summary> 
        /// word轉成html 
        /// </summary> 
        /// <param name="wordFileName"></param> 
        private string WordToHtml(object wordFileName)
        {
            //在此處放置使用者程式碼以初始化頁面 
            Word.Application word = new Word.Application();
            Type wordType = word.GetType();
            Word.Documents docs = word.Documents;
            //開啟檔案 
            Type docsType = docs.GetType();
            Word.Document doc = (Word.Document)docsType.InvokeMember("Open", System.Reflection.BindingFlags.InvokeMethod, null, docs, new Object[] { wordFileName, true, true });
            //轉換格式，另存為 
            Type docType = doc.GetType();
            string wordSaveFileName = wordFileName.ToString();
            string strSaveFileName = wordSaveFileName.Substring(0, wordSaveFileName.Length - 3) + "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();
        }