直接在线预览Word、Excel、TXT文件之ASP.NET

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using Microsoft.Office.Interop.Excel;using System.Diagnostics;using System.IO;using Microsoft.Office.Interop.Word;namespace Suya.Web.Apps.Areas.PMP.Controllers{  /// <summary>  /// 在线预览Office文件  /// </summary>  public class OfficeViewController : Controller  {    #region Index页面    /// <summary>    /// Index页面    /// </summary>    /// <param name="url">例：/uploads/......XXX.xls</param>    public ActionResult Index(string url)    {      string physicalPath = Server.MapPath(Server.UrlDecode(url));      string extension = Path.GetExtension(physicalPath);      string htmlUrl = "";      switch (extension.ToLower())      {        case ".xls":        case ".xlsx":          htmlUrl = PreviewExcel(physicalPath, url);          break;        case ".doc":        case ".docx":          htmlUrl = PreviewWord(physicalPath, url);          break;        case ".txt":          htmlUrl = PreviewTxt(physicalPath, url);          break;        case ".pdf":          htmlUrl = PreviewPdf(physicalPath, url);          break;      }      return Redirect(Url.Content(htmlUrl));    }    #endregion    #region 预览Excel    /// <summary>    /// 预览Excel    /// </summary>    public string PreviewExcel(string physicalPath, string url)    {      Microsoft.Office.Interop.Excel.Application application = null;      Microsoft.Office.Interop.Excel.Workbook workbook = null;      application = new Microsoft.Office.Interop.Excel.Application();      object missing = Type.Missing;      object trueObject = true;      application.Visible = false;      application.DisplayAlerts = false;      workbook = application.Workbooks.Open(physicalPath, missing, trueObject, missing, missing, missing,        missing, missing, missing, missing, missing, missing, missing, missing, missing);      //Save Excel to Html      object format = Microsoft.Office.Interop.Excel.XlFileFormat.xlHtml;      string htmlName = Path.GetFileNameWithoutExtension(physicalPath) + ".html";      String outputFile = Path.GetDirectoryName(physicalPath) + "//" + htmlName;      workbook.SaveAs(outputFile, format, missing, missing, missing,               missing, XlSaveAsAccessMode.xlNoChange, missing,               missing, missing, missing, missing);      workbook.Close();      application.Quit();      return Path.GetDirectoryName(Server.UrlDecode(url)) + "//" + htmlName;    }    #endregion    #region 预览Word    /// <summary>    /// 预览Word    /// </summary>    public string PreviewWord(string physicalPath, string url)    {      Microsoft.Office.Interop.Word._Application application = null;      Microsoft.Office.Interop.Word._Document doc = null;      application = new Microsoft.Office.Interop.Word.Application();      object missing = Type.Missing;      object trueObject = true;      application.Visible = false;      application.DisplayAlerts = WdAlertLevel.wdAlertsNone;      doc = application.Documents.Open(physicalPath, missing, trueObject, missing, missing, missing,        missing, missing, missing, missing, missing, missing, missing, missing, missing, missing);      //Save Excel to Html      object format = Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatHTML;      string htmlName = Path.GetFileNameWithoutExtension(physicalPath) + ".html";      String outputFile = Path.GetDirectoryName(physicalPath) + "//" + htmlName;      doc.SaveAs(outputFile, format, missing, missing, missing,               missing, XlSaveAsAccessMode.xlNoChange, missing,               missing, missing, missing, missing);      doc.Close();      application.Quit();      return Path.GetDirectoryName(Server.UrlDecode(url)) + "//" + htmlName;    }    #endregion    #region 预览Txt    /// <summary>    /// 预览Txt    /// </summary>    public string PreviewTxt(string physicalPath, string url)    {      return Server.UrlDecode(url);    }    #endregion    #region 预览Pdf    /// <summary>    /// 预览Pdf    /// </summary>    public string PreviewPdf(string physicalPath, string url)    {      return Server.UrlDecode(url);    }    #endregion  }}