如何驗證給定文件是否爲word文檔

Question

可以üplz告訴我如何驗證給定文件是否爲word文檔或不在c＃中。當我嘗試一個示例說1.pdf被重命名爲1.doc，並試圖打開它在C＃使用Word 2007.它失敗了，它需要時間出來。

爲了避免這個時間浪費我想檢測實際的文件類型。

我正在使用Word 2007與C＃2008。如果解決方案存在於使用c＃2010的word 2010中，那麼也可以幫助完整。

請爲我提供解決方案，我必須使用atalasoft 10.0和acrobat XI pro。

Answer 1

要檢測文件的真實類型並不容易。我最近需要一種在ASP.NET中檢測上傳文件是否爲.exe的方法。我添加了一個方法IsWord你：

public class MimeTypes 
{ 
    private static List<string> knownTypes; 

    private static Dictionary<string, string> mimeTypes; 

    public static bool IsWord(string fileName) 
    { 
     if (knownTypes == null || mimeTypes == null) 
      InitializeMimeTypeLists(); 
     string contentType = ""; 
     string extension = Path.GetExtension(fileName).Remove(0, 1).ToLower(); 
     mimeTypes.TryGetValue(extension, out contentType); 

     if (contentType == "application/msword" && 
      ScanFileForMimeType(fileName) == "application/x-zip-compressed") 
      // if you want to include ".doc" files, 
      // add "application/octet-stream" as well 
      return true; 
     else 
      return false; 
    } 

    [DllImport("urlmon.dll", CharSet = CharSet.Auto)] 

    private static extern UInt32 FindMimeFromData(
     UInt32 pBC, [MarshalAs(UnmanagedType.LPStr)] 
     string pwzUrl, [MarshalAs(UnmanagedType.LPArray)] 
     byte[] pBuffer, UInt32 cbSize, [MarshalAs(UnmanagedType.LPStr)] 
     string pwzMimeProposed, UInt32 dwMimeFlags, ref UInt32 ppwzMimeOut, UInt32 dwReserverd 
    ); 

    private static string ScanFileForMimeType(string fileName) 
    { 
     try 
     { 
      byte[] buffer = new byte[256]; 
      using (FileStream fs = new FileStream(fileName, FileMode.Open)) 
      { 
       int readLength = Convert.ToInt32(Math.Min(256, fs.Length)); 
       fs.Read(buffer, 0, readLength); 
      } 

      UInt32 mimeType = default(UInt32); 
      FindMimeFromData(0, null, buffer, 256, null, 0, ref mimeType, 0); 
      IntPtr mimeTypePtr = new IntPtr(mimeType); 
      string mime = Marshal.PtrToStringUni(mimeTypePtr); 
      Marshal.FreeCoTaskMem(mimeTypePtr); 
      if (string.IsNullOrEmpty(mime)) 
       mime = "application/octet-stream"; 
      return mime; 
     } catch (Exception ex) 
     { 
      return "application/octet-stream"; 
     } 
    } 

    private static void InitializeMimeTypeLists() 
    { 
     knownTypes = new List<string>() { 
      "text/plain", 
      "text/html", 
      "text/xml", 
      "text/richtext", 
      "text/scriptlet", 
      "audio/x-aiff", 
      "audio/basic", 
      "audio/mid", 
      "audio/wav", 
      "image/gif", 
      "image/jpeg", 
      "image/pjpeg", 
      "image/png", 
      "image/x-png", 
      "image/tiff", 
      "image/bmp", 
      "image/x-xbitmap", 
      "image/x-jg", 
      "image/x-emf", 
      "image/x-wmf", 
      "video/avi", 
      "video/mpeg", 
      "application/octet-stream", 
      "application/postscript", 
      "application/base64", 
      "application/macbinhex40", 
      "application/pdf", 
      "application/xml", 
      "application/atom+xml", 
      "application/rss+xml", 
      "application/x-compressed", 
      "application/x-zip-compressed", 
      "application/x-gzip-compressed", 
      "application/java", 
      "application/x-msdownload" 
     }; 

     mimeTypes = new Dictionary<string, string>(); 
     mimeTypes.Add("3dm", "x-world/x-3dmf"); 
     mimeTypes.Add("3dmf", "x-world/x-3dmf"); 
     mimeTypes.Add("a", "application/octet-stream"); 
     mimeTypes.Add("aab", "application/x-authorware-bin"); 
     mimeTypes.Add("aam", "application/x-authorware-map"); 
     mimeTypes.Add("aas", "application/x-authorware-seg"); 
     mimeTypes.Add("abc", "text/vnd.abc"); 
     mimeTypes.Add("acgi", "text/html"); 
     mimeTypes.Add("afl", "video/animaflex"); 
     mimeTypes.Add("ai", "application/postscript"); 
     mimeTypes.Add("aif", "audio/aiff"); 
     mimeTypes.Add("aifc", "audio/aiff"); 
     mimeTypes.Add("aiff", "audio/aiff"); 
     mimeTypes.Add("aim", "application/x-aim"); 
     mimeTypes.Add("aip", "text/x-audiosoft-intra"); 
     mimeTypes.Add("ani", "application/x-navi-animation"); 
     mimeTypes.Add("aos", "application/x-nokia-9000-communicator-add-on-software"); 
     mimeTypes.Add("aps", "application/mime"); 
     mimeTypes.Add("arc", "application/octet-stream"); 
     mimeTypes.Add("arj", "application/arj"); 
     mimeTypes.Add("art", "image/x-jg"); 
     mimeTypes.Add("asf", "video/x-ms-asf"); 
     mimeTypes.Add("asm", "text/x-asm"); 
     mimeTypes.Add("asp", "text/asp"); 
     mimeTypes.Add("asx", "application/x-mplayer2"); 
     mimeTypes.Add("au", "audio/basic"); 
     mimeTypes.Add("avi", "video/avi"); 
     mimeTypes.Add("avs", "video/avs-video"); 
     mimeTypes.Add("bcpio", "application/x-bcpio"); 
     mimeTypes.Add("bin", "application/octet-stream"); 
     mimeTypes.Add("bm", "image/bmp"); 
     mimeTypes.Add("bmp", "image/bmp"); 
     mimeTypes.Add("boo", "application/book"); 
     mimeTypes.Add("book", "application/book"); 
     mimeTypes.Add("boz", "application/x-bzip2"); 
     mimeTypes.Add("bsh", "application/x-bsh"); 
     mimeTypes.Add("bz", "application/x-bzip"); 
     mimeTypes.Add("bz2", "application/x-bzip2"); 
     mimeTypes.Add("c", "text/plain"); 
     mimeTypes.Add("c++", "text/plain"); 
     mimeTypes.Add("cat", "application/vnd.ms-pki.seccat"); 
     mimeTypes.Add("cc", "text/plain"); 
     mimeTypes.Add("ccad", "application/clariscad"); 
     mimeTypes.Add("cco", "application/x-cocoa"); 
     mimeTypes.Add("cdf", "application/cdf"); 
     mimeTypes.Add("cer", "application/pkix-cert"); 
     mimeTypes.Add("cha", "application/x-chat"); 
     mimeTypes.Add("chat", "application/x-chat"); 
     mimeTypes.Add("class", "application/java"); 
     mimeTypes.Add("com", "application/octet-stream"); 
     mimeTypes.Add("conf", "text/plain"); 
     mimeTypes.Add("cpio", "application/x-cpio"); 
     mimeTypes.Add("cpp", "text/x-c"); 
     mimeTypes.Add("cpt", "application/x-cpt"); 
     mimeTypes.Add("crl", "application/pkcs-crl"); 
     mimeTypes.Add("css", "text/css"); 
     mimeTypes.Add("def", "text/plain"); 
     mimeTypes.Add("der", "application/x-x509-ca-cert"); 
     mimeTypes.Add("dif", "video/x-dv"); 
     mimeTypes.Add("dir", "application/x-director"); 
     mimeTypes.Add("dl", "video/dl"); 
     mimeTypes.Add("doc", "application/msword"); 
     mimeTypes.Add("docx", "application/msword"); 
     mimeTypes.Add("dot", "application/msword"); 
     mimeTypes.Add("dp", "application/commonground"); 
     mimeTypes.Add("drw", "application/drafting"); 
     mimeTypes.Add("dump", "application/octet-stream"); 
     mimeTypes.Add("dv", "video/x-dv"); 
     mimeTypes.Add("dvi", "application/x-dvi"); 
     mimeTypes.Add("dwf", "drawing/x-dwf (old)"); 
     mimeTypes.Add("dwg", "application/acad"); 
     mimeTypes.Add("dxf", "application/dxf"); 
     mimeTypes.Add("eps", "application/postscript"); 
     mimeTypes.Add("es", "application/x-esrehber"); 
     mimeTypes.Add("etx", "text/x-setext"); 
     mimeTypes.Add("evy", "application/envoy"); 
     mimeTypes.Add("exe", "application/octet-stream"); 
     mimeTypes.Add("f", "text/plain"); 
     mimeTypes.Add("f90", "text/x-fortran"); 
     mimeTypes.Add("fdf", "application/vnd.fdf"); 
     mimeTypes.Add("fif", "image/fif"); 
     mimeTypes.Add("fli", "video/fli"); 
     mimeTypes.Add("flv", "video/x-flv"); 
     mimeTypes.Add("for", "text/x-fortran"); 
     mimeTypes.Add("fpx", "image/vnd.fpx"); 
     mimeTypes.Add("g", "text/plain"); 
     mimeTypes.Add("g3", "image/g3fax"); 
     mimeTypes.Add("gif", "image/gif"); 
     mimeTypes.Add("gl", "video/gl"); 
     mimeTypes.Add("gsd", "audio/x-gsm"); 
     mimeTypes.Add("gtar", "application/x-gtar"); 
     mimeTypes.Add("gz", "application/x-compressed"); 
     mimeTypes.Add("h", "text/plain"); 
     mimeTypes.Add("help", "application/x-helpfile"); 
     mimeTypes.Add("hgl", "application/vnd.hp-hpgl"); 
     mimeTypes.Add("hh", "text/plain"); 
     mimeTypes.Add("hlp", "application/x-winhelp"); 
     mimeTypes.Add("htc", "text/x-component"); 
     mimeTypes.Add("htm", "text/html"); 
     mimeTypes.Add("html", "text/html"); 
     mimeTypes.Add("htmls", "text/html"); 
     mimeTypes.Add("htt", "text/webviewhtml"); 
     mimeTypes.Add("htx", "text/html"); 
     mimeTypes.Add("ice", "x-conference/x-cooltalk"); 
     mimeTypes.Add("ico", "image/x-icon"); 
     mimeTypes.Add("idc", "text/plain"); 
     mimeTypes.Add("ief", "image/ief"); 
     mimeTypes.Add("iefs", "image/ief"); 
     mimeTypes.Add("iges", "application/iges"); 
     mimeTypes.Add("igs", "application/iges"); 
     mimeTypes.Add("ima", "application/x-ima"); 
     mimeTypes.Add("imap", "application/x-httpd-imap"); 
     mimeTypes.Add("inf", "application/inf"); 
     mimeTypes.Add("ins", "application/x-internett-signup"); 
     mimeTypes.Add("ip", "application/x-ip2"); 
     mimeTypes.Add("isu", "video/x-isvideo"); 
     mimeTypes.Add("it", "audio/it"); 
     mimeTypes.Add("iv", "application/x-inventor"); 
     mimeTypes.Add("ivr", "i-world/i-vrml"); 
     mimeTypes.Add("ivy", "application/x-livescreen"); 
     mimeTypes.Add("jam", "audio/x-jam"); 
     mimeTypes.Add("jav", "text/plain"); 
     mimeTypes.Add("java", "text/plain"); 
     mimeTypes.Add("jcm", "application/x-java-commerce"); 
     mimeTypes.Add("jfif", "image/jpeg"); 
     mimeTypes.Add("jfif-tbnl", "image/jpeg"); 
     mimeTypes.Add("jpe", "image/jpeg"); 
     mimeTypes.Add("jpeg", "image/jpeg"); 
     mimeTypes.Add("jpg", "image/jpeg"); 
     mimeTypes.Add("jps", "image/x-jps"); 
     mimeTypes.Add("js", "application/x-javascript"); 
     mimeTypes.Add("jut", "image/jutvision"); 
     mimeTypes.Add("kar", "audio/midi"); 
     mimeTypes.Add("ksh", "application/x-ksh"); 
     mimeTypes.Add("la", "audio/nspaudio"); 
     mimeTypes.Add("lam", "audio/x-liveaudio"); 
     mimeTypes.Add("latex", "application/x-latex"); 
     mimeTypes.Add("lha", "application/lha"); 
     mimeTypes.Add("lhx", "application/octet-stream"); 
     mimeTypes.Add("list", "text/plain"); 
     mimeTypes.Add("lma", "audio/nspaudio"); 
     mimeTypes.Add("log", "text/plain"); 
     mimeTypes.Add("lsp", "application/x-lisp"); 
     mimeTypes.Add("lst", "text/plain"); 
     mimeTypes.Add("lsx", "text/x-la-asf"); 
     mimeTypes.Add("ltx", "application/x-latex"); 
     mimeTypes.Add("lzh", "application/octet-stream"); 
     mimeTypes.Add("lzx", "application/lzx"); 
     mimeTypes.Add("m", "text/plain"); 
     mimeTypes.Add("m1v", "video/mpeg"); 
     mimeTypes.Add("m2a", "audio/mpeg"); 
     mimeTypes.Add("m2v", "video/mpeg"); 
     mimeTypes.Add("m3u", "audio/x-mpequrl"); 
     mimeTypes.Add("man", "application/x-troff-man"); 
     mimeTypes.Add("map", "application/x-navimap"); 
     mimeTypes.Add("mar", "text/plain"); 
     mimeTypes.Add("mbd", "application/mbedlet"); 
     mimeTypes.Add("mc$", "application/x-magic-cap-package-1.0"); 
     mimeTypes.Add("mcd", "application/mcad"); 
     mimeTypes.Add("mcf", "image/vasa"); 
     mimeTypes.Add("mcp", "application/netmc"); 
     mimeTypes.Add("me", "application/x-troff-me"); 
     mimeTypes.Add("mht", "message/rfc822"); 
     mimeTypes.Add("mhtml", "message/rfc822"); 
     mimeTypes.Add("mid", "audio/midi"); 
     mimeTypes.Add("midi", "audio/midi"); 
     mimeTypes.Add("mif", "application/x-frame"); 
     mimeTypes.Add("mime", "message/rfc822"); 
     mimeTypes.Add("mjf", "audio/x-vnd.audioexplosion.mjuicemediafile"); 
     mimeTypes.Add("mjpg", "video/x-motion-jpeg"); 
     mimeTypes.Add("mm", "application/base64"); 
     mimeTypes.Add("mme", "application/base64"); 
     mimeTypes.Add("mod", "audio/mod"); 
     mimeTypes.Add("moov", "video/quicktime"); 
     mimeTypes.Add("mov", "video/quicktime"); 
     mimeTypes.Add("movie", "video/x-sgi-movie"); 
     mimeTypes.Add("mp2", "audio/mpeg"); 
     mimeTypes.Add("mp3", "audio/mpeg3"); 
     mimeTypes.Add("mpa", "audio/mpeg"); 
     mimeTypes.Add("mpc", "application/x-project"); 
     mimeTypes.Add("mpe", "video/mpeg"); 
     mimeTypes.Add("mpeg", "video/mpeg"); 
     mimeTypes.Add("mpg", "video/mpeg"); 
     mimeTypes.Add("mpga", "audio/mpeg"); 
     mimeTypes.Add("mpp", "application/vnd.ms-project"); 
     mimeTypes.Add("mpt", "application/x-project"); 
     mimeTypes.Add("mpv", "application/x-project"); 
     mimeTypes.Add("mpx", "application/x-project"); 
     mimeTypes.Add("mrc", "application/marc"); 
     mimeTypes.Add("ms", "application/x-troff-ms"); 
     mimeTypes.Add("mv", "video/x-sgi-movie"); 
     mimeTypes.Add("my", "audio/make"); 
     mimeTypes.Add("mzz", "application/x-vnd.audioexplosion.mzz"); 
     mimeTypes.Add("nap", "image/naplps"); 
     mimeTypes.Add("naplps", "image/naplps"); 
     mimeTypes.Add("nc", "application/x-netcdf"); 
     mimeTypes.Add("ncm", "application/vnd.nokia.configuration-message"); 
     mimeTypes.Add("nif", "image/x-niff"); 
     mimeTypes.Add("niff", "image/x-niff"); 
     mimeTypes.Add("nix", "application/x-mix-transfer"); 
     mimeTypes.Add("nsc", "application/x-conference"); 
     mimeTypes.Add("nvd", "application/x-navidoc"); 
     mimeTypes.Add("o", "application/octet-stream"); 
     mimeTypes.Add("oda", "application/oda"); 
     mimeTypes.Add("omc", "application/x-omc"); 
     mimeTypes.Add("omcd", "application/x-omcdatamaker"); 
     mimeTypes.Add("omcr", "application/x-omcregerator"); 
     mimeTypes.Add("p", "text/x-pascal"); 
     mimeTypes.Add("p10", "application/pkcs10"); 
     mimeTypes.Add("p12", "application/pkcs-12"); 
     mimeTypes.Add("p7a", "application/x-pkcs7-signature"); 
     mimeTypes.Add("p7c", "application/pkcs7-mime"); 
     mimeTypes.Add("pas", "text/pascal"); 
     mimeTypes.Add("pbm", "image/x-portable-bitmap"); 
     mimeTypes.Add("pcl", "application/vnd.hp-pcl"); 
     mimeTypes.Add("pct", "image/x-pict"); 
     mimeTypes.Add("pcx", "image/x-pcx"); 
     mimeTypes.Add("pdf", "application/pdf"); 
     mimeTypes.Add("pfunk", "audio/make"); 
     mimeTypes.Add("pgm", "image/x-portable-graymap"); 
     mimeTypes.Add("pic", "image/pict"); 
     mimeTypes.Add("pict", "image/pict"); 
     mimeTypes.Add("pkg", "application/x-newton-compatible-pkg"); 
     mimeTypes.Add("pko", "application/vnd.ms-pki.pko"); 
     mimeTypes.Add("pl", "text/plain"); 
     mimeTypes.Add("plx", "application/x-pixclscript"); 
     mimeTypes.Add("pm", "image/x-xpixmap"); 
     mimeTypes.Add("png", "image/png"); 
     mimeTypes.Add("pnm", "application/x-portable-anymap"); 
     mimeTypes.Add("pot", "application/mspowerpoint"); 
     mimeTypes.Add("pov", "model/x-pov"); 
     mimeTypes.Add("ppa", "application/vnd.ms-powerpoint"); 
     mimeTypes.Add("ppm", "image/x-portable-pixmap"); 
     mimeTypes.Add("pps", "application/mspowerpoint"); 
     mimeTypes.Add("ppt", "application/mspowerpoint"); 
     mimeTypes.Add("ppz", "application/mspowerpoint"); 
     mimeTypes.Add("pre", "application/x-freelance"); 
     mimeTypes.Add("prt", "application/pro_eng"); 
     mimeTypes.Add("ps", "application/postscript"); 
     mimeTypes.Add("psd", "application/octet-stream"); 
     mimeTypes.Add("pvu", "paleovu/x-pv"); 
     mimeTypes.Add("pwz", "application/vnd.ms-powerpoint"); 
     mimeTypes.Add("py", "text/x-script.phyton"); 
     mimeTypes.Add("pyc", "applicaiton/x-bytecode.python"); 
     mimeTypes.Add("qcp", "audio/vnd.qcelp"); 
     mimeTypes.Add("qd3", "x-world/x-3dmf"); 
     mimeTypes.Add("qd3d", "x-world/x-3dmf"); 
     mimeTypes.Add("qif", "image/x-quicktime"); 
     mimeTypes.Add("qt", "video/quicktime"); 
     mimeTypes.Add("qtc", "video/x-qtc"); 
     mimeTypes.Add("qti", "image/x-quicktime"); 
     mimeTypes.Add("qtif", "image/x-quicktime"); 
     mimeTypes.Add("ra", "audio/x-pn-realaudio"); 
     mimeTypes.Add("ram", "audio/x-pn-realaudio"); 
     mimeTypes.Add("ras", "application/x-cmu-raster"); 
     mimeTypes.Add("rast", "image/cmu-raster"); 
     mimeTypes.Add("rexx", "text/x-script.rexx"); 
     mimeTypes.Add("rf", "image/vnd.rn-realflash"); 
     mimeTypes.Add("rgb", "image/x-rgb"); 
     mimeTypes.Add("rm", "application/vnd.rn-realmedia"); 
     mimeTypes.Add("rmi", "audio/mid"); 
     mimeTypes.Add("rmm", "audio/x-pn-realaudio"); 
     mimeTypes.Add("rmp", "audio/x-pn-realaudio"); 
     mimeTypes.Add("rng", "application/ringing-tones"); 
     mimeTypes.Add("rnx", "application/vnd.rn-realplayer"); 
     mimeTypes.Add("roff", "application/x-troff"); 
     mimeTypes.Add("rp", "image/vnd.rn-realpix"); 
     mimeTypes.Add("rpm", "audio/x-pn-realaudio-plugin"); 
     mimeTypes.Add("rt", "text/richtext"); 
     mimeTypes.Add("rtf", "text/richtext"); 
     mimeTypes.Add("rtx", "application/rtf"); 
     mimeTypes.Add("rv", "video/vnd.rn-realvideo"); 
     mimeTypes.Add("s", "text/x-asm"); 
     mimeTypes.Add("s3m", "audio/s3m"); 
     mimeTypes.Add("saveme", "application/octet-stream"); 
     mimeTypes.Add("sbk", "application/x-tbook"); 
     mimeTypes.Add("scm", "application/x-lotusscreencam"); 
     mimeTypes.Add("sdml", "text/plain"); 
     mimeTypes.Add("sdp", "application/sdp"); 
     mimeTypes.Add("sdr", "application/sounder"); 
     mimeTypes.Add("sea", "application/sea"); 
     mimeTypes.Add("set", "application/set"); 
     mimeTypes.Add("sgm", "text/sgml"); 
     mimeTypes.Add("sgml", "text/sgml"); 
     mimeTypes.Add("sh", "application/x-bsh"); 
     mimeTypes.Add("shtml", "text/html"); 
     mimeTypes.Add("sid", "audio/x-psid"); 
     mimeTypes.Add("sit", "application/x-sit"); 
     mimeTypes.Add("skd", "application/x-koan"); 
     mimeTypes.Add("skm", "application/x-koan"); 
     mimeTypes.Add("skp", "application/x-koan"); 
     mimeTypes.Add("skt", "application/x-koan"); 
     mimeTypes.Add("sl", "application/x-seelogo"); 
     mimeTypes.Add("smi", "application/smil"); 
     mimeTypes.Add("smil", "application/smil"); 
     mimeTypes.Add("snd", "audio/basic"); 
     mimeTypes.Add("sol", "application/solids"); 
     mimeTypes.Add("spc", "application/x-pkcs7-certificates"); 
     mimeTypes.Add("spl", "application/futuresplash"); 
     mimeTypes.Add("spr", "application/x-sprite"); 
     mimeTypes.Add("sprite", "application/x-sprite"); 
     mimeTypes.Add("src", "application/x-wais-source"); 
     mimeTypes.Add("ssi", "text/x-server-parsed-html"); 
     mimeTypes.Add("ssm", "application/streamingmedia"); 
     mimeTypes.Add("sst", "application/vnd.ms-pki.certstore"); 
     mimeTypes.Add("step", "application/step"); 
     mimeTypes.Add("stl", "application/sla"); 
     mimeTypes.Add("stp", "application/step"); 
     mimeTypes.Add("sv4cpio", "application/x-sv4cpio"); 
     mimeTypes.Add("sv4crc", "application/x-sv4crc"); 
     mimeTypes.Add("svf", "image/vnd.dwg"); 
     mimeTypes.Add("svr", "application/x-world"); 
     mimeTypes.Add("swf", "application/x-shockwave-flash"); 
     mimeTypes.Add("t", "application/x-troff"); 
     mimeTypes.Add("talk", "text/x-speech"); 
     mimeTypes.Add("tar", "application/x-tar"); 
     mimeTypes.Add("tbk", "application/toolbook"); 
     mimeTypes.Add("tcl", "application/x-tcl"); 
     mimeTypes.Add("tcsh", "text/x-script.tcsh"); 
     mimeTypes.Add("tex", "application/x-tex"); 
     mimeTypes.Add("texi", "application/x-texinfo"); 
     mimeTypes.Add("texinfo", "application/x-texinfo"); 
     mimeTypes.Add("text", "text/plain"); 
     mimeTypes.Add("tgz", "application/x-compressed"); 
     mimeTypes.Add("tif", "image/tiff"); 
     mimeTypes.Add("tr", "application/x-troff"); 
     mimeTypes.Add("tsi", "audio/tsp-audio"); 
     mimeTypes.Add("tsp", "audio/tsplayer"); 
     mimeTypes.Add("tsv", "text/tab-separated-values"); 
     mimeTypes.Add("turbot", "image/florian"); 
     mimeTypes.Add("txt", "text/plain"); 
     mimeTypes.Add("uil", "text/x-uil"); 
     mimeTypes.Add("uni", "text/uri-list"); 
     mimeTypes.Add("unis", "text/uri-list"); 
     mimeTypes.Add("unv", "application/i-deas"); 
     mimeTypes.Add("uri", "text/uri-list"); 
     mimeTypes.Add("uris", "text/uri-list"); 
     mimeTypes.Add("ustar", "application/x-ustar"); 
     mimeTypes.Add("uu", "application/octet-stream"); 
     mimeTypes.Add("vcd", "application/x-cdlink"); 
     mimeTypes.Add("vcs", "text/x-vcalendar"); 
     mimeTypes.Add("vda", "application/vda"); 
     mimeTypes.Add("vdo", "video/vdo"); 
     mimeTypes.Add("vew", "application/groupwise"); 
     mimeTypes.Add("viv", "video/vivo"); 
     mimeTypes.Add("vivo", "video/vivo"); 
     mimeTypes.Add("vmd", "application/vocaltec-media-desc"); 
     mimeTypes.Add("vmf", "application/vocaltec-media-file"); 
     mimeTypes.Add("voc", "audio/voc"); 
     mimeTypes.Add("vos", "video/vosaic"); 
     mimeTypes.Add("vox", "audio/voxware"); 
     mimeTypes.Add("vqe", "audio/x-twinvq-plugin"); 
     mimeTypes.Add("vqf", "audio/x-twinvq"); 
     mimeTypes.Add("vql", "audio/x-twinvq-plugin"); 
     mimeTypes.Add("vrml", "application/x-vrml"); 
     mimeTypes.Add("vrt", "x-world/x-vrt"); 
     mimeTypes.Add("vsd", "application/x-visio"); 
     mimeTypes.Add("vst", "application/x-visio"); 
     mimeTypes.Add("vsw", "application/x-visio"); 
     mimeTypes.Add("w60", "application/wordperfect6.0"); 
     mimeTypes.Add("w61", "application/wordperfect6.1"); 
     mimeTypes.Add("w6w", "application/msword"); 
     mimeTypes.Add("wav", "audio/wav"); 
     mimeTypes.Add("wb1", "application/x-qpro"); 
     mimeTypes.Add("wbmp", "image/vnd.wap.wbmp"); 
     mimeTypes.Add("web", "application/vnd.xara"); 
     mimeTypes.Add("wiz", "application/msword"); 
     mimeTypes.Add("wk1", "application/x-123"); 
     mimeTypes.Add("wmf", "windows/metafile"); 
     mimeTypes.Add("wml", "text/vnd.wap.wml"); 
     mimeTypes.Add("wmlc", "application/vnd.wap.wmlc"); 
     mimeTypes.Add("wmls", "text/vnd.wap.wmlscript"); 
     mimeTypes.Add("wmlsc", "application/vnd.wap.wmlscriptc"); 
     mimeTypes.Add("word", "application/msword"); 
     mimeTypes.Add("wp", "application/wordperfect"); 
     mimeTypes.Add("wp5", "application/wordperfect"); 
     mimeTypes.Add("wp6", "application/wordperfect"); 
     mimeTypes.Add("wpd", "application/wordperfect"); 
     mimeTypes.Add("wq1", "application/x-lotus"); 
     mimeTypes.Add("wri", "application/mswrite"); 
     mimeTypes.Add("wrl", "application/x-world"); 
     mimeTypes.Add("wrz", "model/vrml"); 
     mimeTypes.Add("wsc", "text/scriplet"); 
     mimeTypes.Add("wsrc", "application/x-wais-source"); 
     mimeTypes.Add("wtk", "application/x-wintalk"); 
     mimeTypes.Add("xbm", "image/x-xbitmap"); 
     mimeTypes.Add("xdr", "video/x-amt-demorun"); 
     mimeTypes.Add("xgz", "xgl/drawing"); 
     mimeTypes.Add("xif", "image/vnd.xiff"); 
     mimeTypes.Add("xl", "application/excel"); 
     mimeTypes.Add("xla", "application/excel"); 
     mimeTypes.Add("xlb", "application/excel"); 
     mimeTypes.Add("xlc", "application/excel"); 
     mimeTypes.Add("xld", "application/excel"); 
     mimeTypes.Add("xlk", "application/excel"); 
     mimeTypes.Add("xll", "application/excel"); 
     mimeTypes.Add("xlm", "application/excel"); 
     mimeTypes.Add("xls", "application/excel"); 
     mimeTypes.Add("xlsx", "application/excel"); 
     mimeTypes.Add("xlt", "application/excel"); 
     mimeTypes.Add("xlv", "application/excel"); 
     mimeTypes.Add("xlw", "application/excel"); 
     mimeTypes.Add("xm", "audio/xm"); 
     mimeTypes.Add("xml", "text/xml"); 
     mimeTypes.Add("xmz", "xgl/movie"); 
     mimeTypes.Add("xpix", "application/x-vnd.ls-xpix"); 
     mimeTypes.Add("xpm", "image/x-xpixmap"); 
     mimeTypes.Add("x-png", "image/png"); 
     mimeTypes.Add("xsr", "video/x-amt-showrun"); 
     mimeTypes.Add("xwd", "image/x-xwd"); 
     mimeTypes.Add("xyz", "chemical/x-pdb"); 
     mimeTypes.Add("z", "application/x-compress"); 
     mimeTypes.Add("zip", "application/x-compressed"); 
     mimeTypes.Add("zoo", "application/octet-stream"); 
     mimeTypes.Add("zsh", "text/x-script.zsh"); 
    } 
} 

但是請注意，所有的Office 2007文件格式中的「X」是ZIP壓縮XML文檔結束。所以這種方法不是100％安全的，但至少它可以幫助你過濾掉一些無效的東西。