在线预览Excel

遇到的问题各种多

<system.web>
   
    <identity impersonate="true" userName="Administrator" password="qqqq"/>

http://zzhi191.blog.163.com/blog/static/1350849520129122280406/

http://bbs.csdn.net/topics/330173175

http://tanyanbo2.blog.163.com/blog/static/97339159201092941136797/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Excel02 = Microsoft.Office.Interop.Excel;
using System.Reflection;
using Microsoft.Office.Interop.Excel;
using System.IO;
using System.Diagnostics; 

namespace MouldWEBKT.ItemManage
{
    public partial class TestPreView : System.Web.UI.Page
    {
     //   public string fileName = @"\mold\123.xls";
        protected void Page_Load(object sender, EventArgs e)
        {
            GenerationExcelHTML(@"D:\22.xls", @"D:\22.html");
        }
        protected bool GenerationExcelHTML(string FilePath, string saveFilePath)
        {
            try
            {
                Excel02.Application app = new Excel02.Application();
                app.Visible = false;
                Object o = Missing.Value;

                ///打开文件
                /*下面是Microsoft Excel 9 Object Library的写法： */
                _Workbook xls = app.Workbooks.Open(FilePath, o, o, o, o, o, o, o, o, o, o, o, o);

                /*下面是Microsoft Excel 10 Object Library的写法： */
                //  _Workbook xls = app.Workbooks.Open(FilePath, o, o, o, o, o, o, o, o, o, o, o, o, o, o);  

                ///转换格式，另存为 HTML
                /*下面是Microsoft Excel 9 Object Library的写法： */
                 xls.SaveAs(saveFilePath, Excel.XlFileFormat.xlHtml, o, o, o, o, XlSaveAsAccessMode.xlExclusive, o, o, o, o); 

                /*下面是Microsoft Excel 10 Object Library的写法： */
              //  xls.SaveAs(saveFilePath, Excel.XlFileFormat.xlHtml, o, o, o, o, XlSaveAsAccessMode.xlExclusive, o, o, o, o, o);

                ///退出 Excel
                app.Quit();
                return true;
            }
            catch
            {
                return false;
            }
            finally
            {
                //最后关闭打开的excel 进程
                Process[] myProcesses = Process.GetProcessesByName("EXCEL");
                foreach (Process myProcess in myProcesses)
                {
                    myProcess.Kill();
                }
            }
        }
    }
}