用asp.net网页显示word和excel文档，不知如何运用下面网上发现的代码，，求大神赐教

已经在E盘添加了12345.文件，aspx页面不知要加什么控件，该cs文件只是更改了一些引用后，删了word部分调试，页面空白。怎么用啊？？

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Reflection;
using Excel;
using System.Diagnostics;
using Microsoft;
using Word = Microsoft.Office.Interop.Word;



public partial class tel : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//word
Response.Write(Get_Html("New.doc"));
//excel
ExcelConvertToHtml("E:\\12345.xls", "E:\\aaa.html");
}

protected void ExcelConvertToHtml(string xlsPath, string htmlPath)
{
try
{
Excel.Application app = new Excel.Application();
app.Visible = false;
Object o = Missing.Value;

/// _Workbook xls=app.Workbooks.Open(xlsPath,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o);

_Workbook xls = app.Workbooks.Open(xlsPath, o, o, o, o, o, o, o, o, o, o, o, o);
object fileName = htmlPath;
object format = Excel.XlFileFormat.xlHtml;//Html

// xls.SaveAs(ref fileName,ref format,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o,ref o);
xls.SaveAs(fileName, format, o, o, o, o, XlSaveAsAccessMode.xlExclusive, o, o, o, o);
//xls.SaveAs(
object t = true;
app.Quit();

Process[] myProcesses = Process.GetProcessesByName("EXCEL");
foreach (Process myProcess in myProcesses)
{
myProcess.Kill();
}
}
catch (Exception ex)
{
System.Console.Write(ex.Message);
// MessageBox.Show(ex.Message);
}
}
private string Get_Html(string FileName)
{

Word.ApplicationClass word = new Word.ApplicationClass();
Type wordType = word.GetType();
Word.Documents docs = word.Documents;

// 打开文件
Type docsType = docs.GetType();
// RAID.doc
// string newFileNamePath = this.Server.MapPath(mydata.Config.SysUploadPath + "/" + FileName);
string newFileNamePath = this.Server.MapPath("download/" + FileName);
Word.Document doc = (Word.Document)docsType.InvokeMember

("Open", System.Reflection.BindingFlags.InvokeMethod, null, docs, new Object[] { newFileNamePath, true,

true });

// 转换格式，另存为
Type docType = doc.GetType();
object saveFileName = newFileNamePath.Replace(".doc", ".htm");
//下面是Microsoft Word 9 Object Library的写法，如果是10，可能写成：
/*
docType.InvokeMember("SaveAs", System.Reflection.BindingFlags.InvokeMethod,
null, doc, new object[]{saveFileName, Word.WdSaveFormat.wdFormatFilteredHTML});
*/
///其它格式：
///wdFormatHTML
///wdFormatDocument
///wdFormatDOSText
///wdFormatDOSTextLineBreaks
///wdFormatEncodedText
///wdFormatRTF
///wdFormatTemplate
///wdFormatText
///wdFormatTextLineBreaks
///wdFormatUnicodeText
docType.InvokeMember("SaveAs", System.Reflection.BindingFlags.InvokeMethod, null, doc, new object[] { saveFileName, Word.WdSaveFormat.wdFormatHTML });

// 退出 Word
wordType.InvokeMember("Quit", System.Reflection.BindingFlags.InvokeMethod, null, word, null);

string newFileName = FileName.Replace(".doc", ".htm");
return (newFileName);
}

}




有word部分调试，出现显示下面代码调用目标发现异常：
Word.Document doc = (Word.Document)docsType.InvokeMember

("Open", System.Reflection.BindingFlags.InvokeMethod, null, docs, new Object[] { newFileNamePath, true,

true });

怎么用啊怎么用啊？？？