于是考虑在每个文件上传时为其生存一份HTMl文件，这样就能实现在线预览功能。主要代码如下

复制代码 代码如下:

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using Word = Microsoft.Office.Interop.Word;

public partial class test : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

WordToHtml("d:yijian.doc");

}

/// <summary>

/// word转成html

/// </summary>

/// <param name="wordFileName"></param>

private string WordToHtml(object wordFileName)

{

//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 - 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();

}

}