Archive for category Programming
PART 2: How to get the mime type of a file using the name of a file in C#
Posted by suddenelfilio in Visual Studio .Net on 31/08/2010
Following up on a comment that was posted in my previous post I updated my library to first look in a hard coded list of extensions to see if I can find a corresponding mime type. I must admit that I got a bit inspired by the article Getting MIME types from extension by Pieter Joost van de Sande. I did however updated it to be more .net 4.0 by using the new Lazy<> which lets you do lazy loading. I also replaced the HashTable by a SortedDictionary<string,string>
So the code I used to look up the mime type has changed to this:
string fileExtension = System.IO.Path.GetExtension(fileName).ToLower();
var valueInTable = MimeTypeTable.MimeTypes.Value[fileExtension];
if (valueInTable != null)
return valueInTable as string;
Microsoft.Win32.RegistryKey rk = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(fileExtension);
if (rk != null && rk.GetValue("Content Type") != null)
return rk.GetValue("Content Type").ToString();
return null;
As you can see I now do a lookup in the MimeTypeTable and if I have no result only then I’ll go into the registry to try having better luck there. Here is the implementation of the MimeTypeTable class (beware it’s quite long) also the download of the new library is at the end of this post:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Suddenelfilio.ExtensionMethods.IO
{
internal sealed class MimeTypeTable
{
internal static Lazy<SortedDictionary<string, string>> MimeTypes
{
get
{
return new Lazy<SortedDictionary<string,string>>(() => LoadTable(), true);
}
}
private static SortedDictionary<string, string> LoadTable()
{
SortedDictionary<string, string> types = new SortedDictionary<string, string>(StringComparer.InvariantCultureIgnoreCase);
types.Add(".3dm", "x-world/x-3dmf");
types.Add(".3dmf", "x-world/x-3dmf");
types.Add(".aab", "application/x-authorware-bin");
types.Add(".aam", "application/x-authorware-map");
types.Add(".aas", "application/x-authorware-seg");
types.Add(".abc", "text/vnd.abc");
types.Add(".acgi", "text/html");
types.Add(".afl", "video/animaflex");
types.Add(".ai", "application/postscript");
types.Add(".aif", "audio/aiff");
types.Add(".aifc", "audio/aiff");
types.Add(".aiff", "audio/aiff");
types.Add(".aim", "application/x-aim");
types.Add(".aip", "text/x-audiosoft-intra");
types.Add(".ani", "application/x-navi-animation");
types.Add(".aos", "application/x-nokia-9000-communicator-add-on-software");
types.Add(".aps", "application/mime");
types.Add(".art", "image/x-jg");
types.Add(".asf", "video/x-ms-asf");
types.Add(".asm", "text/x-asm");
types.Add(".asp", "text/asp");
types.Add(".asx", "application/x-mplayer2");
types.Add(".au", "audio/x-au");
types.Add(".avi", "video/avi");
types.Add(".avs", "video/avs-video");
types.Add(".bcpio", "application/x-bcpio");
types.Add(".bm", "image/bmp");
types.Add(".bmp", "image/bmp");
types.Add(".boo", "application/book");
types.Add(".book", "application/book");
types.Add(".boz", "application/x-bzip2");
types.Add(".bsh", "application/x-bsh");
types.Add(".bz", "application/x-bzip");
types.Add(".bz2", "application/x-bzip2");
types.Add(".c", "text/plain");
types.Add(".c++", "text/plain");
types.Add(".cat", "application/vnd.ms-pki.seccat");
types.Add(".cc", "text/plain");
types.Add(".ccad", "application/clariscad");
types.Add(".cco", "application/x-cocoa");
types.Add(".cdf", "application/cdf");
types.Add(".cer", "application/pkix-cert");
types.Add(".cha", "application/x-chat");
types.Add(".chat", "application/x-chat");
types.Add(".class", "application/java");
types.Add(".conf", "text/plain");
types.Add(".cpio", "application/x-cpio");
types.Add(".cpp", "text/plain");
types.Add(".cpt", "application/x-cpt");
types.Add(".crl", "application/pkix-crl");
types.Add(".crt", "application/pkix-cert");
types.Add(".csh", "application/x-csh");
types.Add(".css", "text/css");
types.Add(".cxx", "text/plain");
types.Add(".dcr", "application/x-director");
types.Add(".deepv", "application/x-deepv");
types.Add(".def", "text/plain");
types.Add(".der", "application/x-x509-ca-cert");
types.Add(".dif", "video/x-dv");
types.Add(".dir", "application/x-director");
types.Add(".dl", "video/dl");
types.Add(".doc", "application/msword");
types.Add(".dot", "application/msword");
types.Add(".dp", "application/commonground");
types.Add(".drw", "application/drafting");
types.Add(".dv", "video/x-dv");
types.Add(".dvi", "application/x-dvi");
types.Add(".dwf", "drawing/x-dwf (old)");
types.Add(".dwg", "application/acad");
types.Add(".dxf", "application/dxf");
types.Add(".dxr", "application/x-director");
types.Add(".el", "text/x-script.elisp");
types.Add(".elc", "application/x-elc");
types.Add(".eps", "application/postscript");
types.Add(".es", "application/x-esrehber");
types.Add(".etx", "text/x-setext");
types.Add(".evy", "application/envoy");
types.Add(".f", "text/plain");
types.Add(".f77", "text/plain");
types.Add(".f90", "text/plain");
types.Add(".fdf", "application/vnd.fdf");
types.Add(".fif", "image/fif");
types.Add(".fli", "video/fli");
types.Add(".flo", "image/florian");
types.Add(".flx", "text/vnd.fmi.flexstor");
types.Add(".fmf", "video/x-atomic3d-feature");
types.Add(".for", "text/plain");
types.Add(".fpx", "image/vnd.fpx");
types.Add(".frl", "application/freeloader");
types.Add(".funk", "audio/make");
types.Add(".g", "text/plain");
types.Add(".g3", "image/g3fax");
types.Add(".gif", "image/gif");
types.Add(".gl", "video/gl");
types.Add(".gsd", "audio/x-gsm");
types.Add(".gsm", "audio/x-gsm");
types.Add(".gsp", "application/x-gsp");
types.Add(".gss", "application/x-gss");
types.Add(".gtar", "application/x-gtar");
types.Add(".gz", "application/x-gzip");
types.Add(".gzip", "application/x-gzip");
types.Add(".h", "text/plain");
types.Add(".hdf", "application/x-hdf");
types.Add(".help", "application/x-helpfile");
types.Add(".hgl", "application/vnd.hp-HPGL");
types.Add(".hh", "text/plain");
types.Add(".hlb", "text/x-script");
types.Add(".hlp", "application/x-helpfile");
types.Add(".hpg", "application/vnd.hp-HPGL");
types.Add(".hpgl", "application/vnd.hp-HPGL");
types.Add(".hqx", "application/binhex");
types.Add(".hta", "application/hta");
types.Add(".htc", "text/x-component");
types.Add(".htm", "text/html");
types.Add(".html", "text/html");
types.Add(".htmls", "text/html");
types.Add(".htt", "text/webviewhtml");
types.Add(".htx", "text/html");
types.Add(".ice", "x-conference/x-cooltalk");
types.Add(".ico", "image/x-icon");
types.Add(".idc", "text/plain");
types.Add(".ief", "image/ief");
types.Add(".iefs", "image/ief");
types.Add(".iges", "application/iges");
types.Add(".igs", "application/iges");
types.Add(".ima", "application/x-ima");
types.Add(".imap", "application/x-httpd-imap");
types.Add(".inf", "application/inf");
types.Add(".ins", "application/x-internett-signup");
types.Add(".ip", "application/x-ip2");
types.Add(".isu", "video/x-isvideo");
types.Add(".it", "audio/it");
types.Add(".iv", "application/x-inventor");
types.Add(".ivr", "i-world/i-vrml");
types.Add(".ivy", "application/x-livescreen");
types.Add(".jam", "audio/x-jam");
types.Add(".jav", "text/plain");
types.Add(".java", "text/plain");
types.Add(".jcm", "application/x-java-commerce");
types.Add(".jfif", "image/jpeg");
types.Add(".jfif-tbnl", "image/jpeg");
types.Add(".jpe", "image/jpeg");
types.Add(".jpeg", "image/jpeg");
types.Add(".jpg", "image/jpeg");
types.Add(".jps", "image/x-jps");
types.Add(".js", "application/x-javascript");
types.Add(".jut", "image/jutvision");
types.Add(".kar", "audio/midi");
types.Add(".ksh", "text/x-script.ksh");
types.Add(".la", "audio/nspaudio");
types.Add(".lam", "audio/x-liveaudio");
types.Add(".latex", "application/x-latex");
types.Add(".list", "text/plain");
types.Add(".lma", "audio/nspaudio");
types.Add(".log", "text/plain");
types.Add(".lsp", "application/x-lisp");
types.Add(".lst", "text/plain");
types.Add(".lsx", "text/x-la-asf");
types.Add(".ltx", "application/x-latex");
types.Add(".m", "text/plain");
types.Add(".m1v", "video/mpeg");
types.Add(".m2a", "audio/mpeg");
types.Add(".m2v", "video/mpeg");
types.Add(".m3u", "audio/x-mpequrl");
types.Add(".man", "application/x-troff-man");
types.Add(".map", "application/x-navimap");
types.Add(".mar", "text/plain");
types.Add(".mbd", "application/mbedlet");
types.Add(".mc$", "application/x-magic-cap-package-1.0");
types.Add(".mcd", "application/mcad");
types.Add(".mcf", "image/vasa");
types.Add(".mcp", "application/netmc");
types.Add(".me", "application/x-troff-me");
types.Add(".mht", "message/rfc822");
types.Add(".mhtml", "message/rfc822");
types.Add(".mid", "audio/midi");
types.Add(".midi", "audio/midi");
types.Add(".mif", "application/x-mif");
types.Add(".mime", "message/rfc822");
types.Add(".mjf", "audio/x-vnd.AudioExplosion.MjuiceMediaFile");
types.Add(".mjpg", "video/x-motion-jpeg");
types.Add(".mm", "application/base64");
types.Add(".mme", "application/base64");
types.Add(".mod", "audio/mod");
types.Add(".moov", "video/quicktime");
types.Add(".mov", "video/quicktime");
types.Add(".movie", "video/x-sgi-movie");
types.Add(".mp2", "video/mpeg");
types.Add(".mp3", "audio/mpeg3");
types.Add(".mpa", "audio/mpeg");
types.Add(".mpc", "application/x-project");
types.Add(".mpe", "video/mpeg");
types.Add(".mpeg", "video/mpeg");
types.Add(".mpg", "video/mpeg");
types.Add(".mpga", "audio/mpeg");
types.Add(".mpp", "application/vnd.ms-project");
types.Add(".mpt", "application/x-project");
types.Add(".mpv", "application/x-project");
types.Add(".mpx", "application/x-project");
types.Add(".mrc", "application/marc");
types.Add(".ms", "application/x-troff-ms");
types.Add(".mv", "video/x-sgi-movie");
types.Add(".my", "audio/make");
types.Add(".mzz", "application/x-vnd.AudioExplosion.mzz");
types.Add(".nap", "image/naplps");
types.Add(".naplps", "image/naplps");
types.Add(".nc", "application/x-netcdf");
types.Add(".ncm", "application/vnd.nokia.configuration-message");
types.Add(".nif", "image/x-niff");
types.Add(".niff", "image/x-niff");
types.Add(".nix", "application/x-mix-transfer");
types.Add(".nsc", "application/x-conference");
types.Add(".nvd", "application/x-navidoc");
types.Add(".oda", "application/oda");
types.Add(".omc", "application/x-omc");
types.Add(".omcd", "application/x-omcdatamaker");
types.Add(".omcr", "application/x-omcregerator");
types.Add(".p", "text/x-pascal");
types.Add(".p10", "application/pkcs10");
types.Add(".p12", "application/pkcs-12");
types.Add(".p7a", "application/x-pkcs7-signature");
types.Add(".p7c", "application/pkcs7-mime");
types.Add(".p7m", "application/pkcs7-mime");
types.Add(".p7r", "application/x-pkcs7-certreqresp");
types.Add(".p7s", "application/pkcs7-signature");
types.Add(".part", "application/pro_eng");
types.Add(".pas", "text/pascal");
types.Add(".pbm", "image/x-portable-bitmap");
types.Add(".pcl", "application/x-pcl");
types.Add(".pct", "image/x-pict");
types.Add(".pcx", "image/x-pcx");
types.Add(".pdb", "chemical/x-pdb");
types.Add(".pdf", "application/pdf");
types.Add(".pfunk", "audio/make");
types.Add(".pgm", "image/x-portable-graymap");
types.Add(".pic", "image/pict");
types.Add(".pict", "image/pict");
types.Add(".pkg", "application/x-newton-compatible-pkg");
types.Add(".pko", "application/vnd.ms-pki.pko");
types.Add(".pl", "text/plain");
types.Add(".plx", "application/x-PiXCLscript");
types.Add(".pm", "image/x-xpixmap");
types.Add(".pm4", "application/x-pagemaker");
types.Add(".pm5", "application/x-pagemaker");
types.Add(".png", "image/png");
types.Add(".pnm", "application/x-portable-anymap");
types.Add(".pot", "application/mspowerpoint");
types.Add(".pov", "model/x-pov");
types.Add(".ppa", "application/vnd.ms-powerpoint");
types.Add(".ppm", "image/x-portable-pixmap");
types.Add(".pps", "application/mspowerpoint");
types.Add(".ppt", "application/mspowerpoint");
types.Add(".ppz", "application/mspowerpoint");
types.Add(".pre", "application/x-freelance");
types.Add(".prt", "application/pro_eng");
types.Add(".ps", "application/postscript");
types.Add(".pvu", "paleovu/x-pv");
types.Add(".pwz", "application/vnd.ms-powerpoint");
types.Add(".py", "text/x-script.phyton");
types.Add(".pyc", "applicaiton/x-bytecode.python");
types.Add(".qcp", "audio/vnd.qcelp");
types.Add(".qd3", "x-world/x-3dmf");
types.Add(".qd3d", "x-world/x-3dmf");
types.Add(".qif", "image/x-quicktime");
types.Add(".qt", "video/quicktime");
types.Add(".qtc", "video/x-qtc");
types.Add(".qti", "image/x-quicktime");
types.Add(".qtif", "image/x-quicktime");
types.Add(".ra", "audio/x-pn-realaudio");
types.Add(".ram", "audio/x-pn-realaudio");
types.Add(".ras", "application/x-cmu-raster");
types.Add(".rast", "image/cmu-raster");
types.Add(".rexx", "text/x-script.rexx");
types.Add(".rf", "image/vnd.rn-realflash");
types.Add(".rgb", "image/x-rgb");
types.Add(".rm", "application/vnd.rn-realmedia");
types.Add(".rmi", "audio/mid");
types.Add(".rmm", "audio/x-pn-realaudio");
types.Add(".rmp", "audio/x-pn-realaudio");
types.Add(".rng", "application/ringing-tones");
types.Add(".rnx", "application/vnd.rn-realplayer");
types.Add(".roff", "application/x-troff");
types.Add(".rp", "image/vnd.rn-realpix");
types.Add(".rpm", "audio/x-pn-realaudio-plugin");
types.Add(".rss", "text/xml");
types.Add(".rt", "text/richtext");
types.Add(".rtf", "text/richtext");
types.Add(".rtx", "text/richtext");
types.Add(".rv", "video/vnd.rn-realvideo");
types.Add(".s", "text/x-asm");
types.Add(".s3m", "audio/s3m");
types.Add(".sbk", "application/x-tbook");
types.Add(".scm", "application/x-lotusscreencam");
types.Add(".sdml", "text/plain");
types.Add(".sdp", "application/sdp");
types.Add(".sdr", "application/sounder");
types.Add(".sea", "application/sea");
types.Add(".set", "application/set");
types.Add(".sgm", "text/sgml");
types.Add(".sgml", "text/sgml");
types.Add(".sh", "text/x-script.sh");
types.Add(".shar", "application/x-bsh");
types.Add(".shtml", "text/html");
types.Add(".sid", "audio/x-psid");
types.Add(".sit", "application/x-sit");
types.Add(".skd", "application/x-koan");
types.Add(".skm", "application/x-koan");
types.Add(".skp", "application/x-koan");
types.Add(".skt", "application/x-koan");
types.Add(".sl", "application/x-seelogo");
types.Add(".smi", "application/smil");
types.Add(".smil", "application/smil");
types.Add(".snd", "audio/basic");
types.Add(".sol", "application/solids");
types.Add(".spc", "application/x-pkcs7-certificates");
types.Add(".spl", "application/futuresplash");
types.Add(".spr", "application/x-sprite");
types.Add(".sprite", "application/x-sprite");
types.Add(".src", "application/x-wais-source");
types.Add(".ssi", "text/x-server-parsed-html");
types.Add(".ssm", "application/streamingmedia");
types.Add(".sst", "application/vnd.ms-pki.certstore");
types.Add(".step", "application/step");
types.Add(".stl", "application/sla");
types.Add(".stp", "application/step");
types.Add(".sv4cpio", "application/x-sv4cpio");
types.Add(".sv4crc", "application/x-sv4crc");
types.Add(".svf", "image/x-dwg");
types.Add(".svr", "application/x-world");
types.Add(".swf", "application/x-shockwave-flash");
types.Add(".t", "application/x-troff");
types.Add(".talk", "text/x-speech");
types.Add(".tar", "application/x-tar");
types.Add(".tbk", "application/toolbook");
types.Add(".tcl", "text/x-script.tcl");
types.Add(".tcsh", "text/x-script.tcsh");
types.Add(".tex", "application/x-tex");
types.Add(".texi", "application/x-texinfo");
types.Add(".texinfo", "application/x-texinfo");
types.Add(".text", "text/plain");
types.Add(".tgz", "application/x-compressed");
types.Add(".tif", "image/tiff");
types.Add(".tiff", "image/tiff");
types.Add(".tr", "application/x-troff");
types.Add(".tsi", "audio/tsp-audio");
types.Add(".tsp", "audio/tsplayer");
types.Add(".tsv", "text/tab-separated-values");
types.Add(".turbot", "image/florian");
types.Add(".txt", "text/plain");
types.Add(".uil", "text/x-uil");
types.Add(".uni", "text/uri-list");
types.Add(".unis", "text/uri-list");
types.Add(".unv", "application/i-deas");
types.Add(".uri", "text/uri-list");
types.Add(".uris", "text/uri-list");
types.Add(".ustar", "multipart/x-ustar");
types.Add(".uu", "text/x-uuencode");
types.Add(".uue", "text/x-uuencode");
types.Add(".vcd", "application/x-cdlink");
types.Add(".vcs", "text/x-vCalendar");
types.Add(".vda", "application/vda");
types.Add(".vdo", "video/vdo");
types.Add(".vew", "application/groupwise");
types.Add(".viv", "video/vivo");
types.Add(".vivo", "video/vivo");
types.Add(".vmd", "application/vocaltec-media-desc");
types.Add(".vmf", "application/vocaltec-media-file");
types.Add(".voc", "audio/voc");
types.Add(".vos", "video/vosaic");
types.Add(".vox", "audio/voxware");
types.Add(".vqe", "audio/x-twinvq-plugin");
types.Add(".vqf", "audio/x-twinvq");
types.Add(".vql", "audio/x-twinvq-plugin");
types.Add(".vrml", "application/x-vrml");
types.Add(".vrt", "x-world/x-vrt");
types.Add(".vsd", "application/x-visio");
types.Add(".vst", "application/x-visio");
types.Add(".vsw", "application/x-visio");
types.Add(".w60", "application/wordperfect6.0");
types.Add(".w61", "application/wordperfect6.1");
types.Add(".w6w", "application/msword");
types.Add(".wav", "audio/wav");
types.Add(".wb1", "application/x-qpro");
types.Add(".wbmp", "image/vnd.wap.wbmp");
types.Add(".web", "application/vnd.xara");
types.Add(".wiz", "application/msword");
types.Add(".wk1", "application/x-123");
types.Add(".wmf", "windows/metafile");
types.Add(".wml", "text/vnd.wap.wml");
types.Add(".wmlc", "application/vnd.wap.wmlc");
types.Add(".wmls", "text/vnd.wap.wmlscript");
types.Add(".wmlsc", "application/vnd.wap.wmlscriptc");
types.Add(".word", "application/msword");
types.Add(".wp", "application/wordperfect");
types.Add(".wp5", "application/wordperfect");
types.Add(".wp6", "application/wordperfect");
types.Add(".wpd", "application/wordperfect");
types.Add(".wq1", "application/x-lotus");
types.Add(".wri", "application/mswrite");
types.Add(".wrl", "application/x-world");
types.Add(".wrz", "model/vrml");
types.Add(".wsc", "text/scriplet");
types.Add(".wsrc", "application/x-wais-source");
types.Add(".wtk", "application/x-wintalk");
types.Add(".xbm", "image/x-xbitmap");
types.Add(".xdr", "video/x-amt-demorun");
types.Add(".xgz", "xgl/drawing");
types.Add(".xif", "image/vnd.xiff");
types.Add(".xl", "application/excel");
types.Add(".xla", "application/excel");
types.Add(".xlb", "application/excel");
types.Add(".xlc", "application/excel");
types.Add(".xld", "application/excel");
types.Add(".xlk", "application/excel");
types.Add(".xll", "application/excel");
types.Add(".xlm", "application/excel");
types.Add(".xls", "application/excel");
types.Add(".xlt", "application/excel");
types.Add(".xlv", "application/excel");
types.Add(".xlw", "application/excel");
types.Add(".xm", "audio/xm");
types.Add(".xml", "text/xml");
types.Add(".xmz", "xgl/movie");
types.Add(".xpix", "application/x-vnd.ls-xpix");
types.Add(".xpm", "image/xpm");
types.Add(".x-png", "image/png");
types.Add(".xsr", "video/x-amt-showrun");
types.Add(".xwd", "image/x-xwd");
types.Add(".xyz", "chemical/x-pdb");
types.Add(".z", "application/x-compressed");
types.Add(".zip", "application/zip");
types.Add(".zsh", "text/x-script.zsh");
return types;
}
}
}
Here is the library: Suddenelfilio.ExtensionMethods.zip
Downloaded 552 times
How to get the mime type of a file using the name of a file in C#
Posted by suddenelfilio in Visual Studio .Net on 31/08/2010
UPDATE: in PART 2: How to get the mime type of a file using the name of a file in C# I updated the library so it first tries to look up the mime type in a hard coded table
I recently needed to know the MIME type of a file or a file name. I know this is not that difficult certainly if you know that all the known mime types are stored in the registry of Windows. There is one caveat though, the extension you are resolving must be registered first. For example if you don’t install Adobe Acrobat PDF reader then the .pdf extension is not known and my solution I propose below won’t return any result. What you can do is either add the extension manually to the registry or install the corresponding application on the machine that needs to know about it.
Okay I’ve created a small (at least for the moment) library that allows you to call GetMimiType() on either a string or System.IO.FileInfo instance. Of course when you call this method on a string make sure the value is a valid file name! I’ve created 2 extension methods for this that can both be found in Suddenelfilio.ExtensionMethods.IO.
Here is the code to find a mime type in the registry:
string fileExtension = System.IO.Path.GetExtension(fileName).ToLower();
Microsoft.Win32.RegistryKey rk = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(fileExtension);
if (rk != null && rk.GetValue("Content Type") != null)
return rk.GetValue("Content Type").ToString();
return null;
Now if you want to use my library and its extension methods below is a sample of a console’s application Program.cs file:
using System;
using System.IO;
using Suddenelfilio.ExtensionMethods.IO;
namespace TestConsole
{
class Program
{
static void Main(string[] args)
{
//Using a string with a filename as value.
string name = "d:\\test.txt";
Console.WriteLine("mimetype for file {0} is {1}", name, name.GetMimeType());
FileInfo info = new FileInfo("d:\\test.txt");
Console.WriteLine("mimetype for file {0} is {1}", info.FullName, info.GetMimeType());
Console.ReadLine();
}
}
}
The result in the console application is the following:
Here is the download containing the dll with the extension methods: Look at the follow up article
LinkedIn OAuth using Hammock in C# & ASP.NET
Posted by suddenelfilio in .net, Web & Design, Web Services on 24/08/2010
UPDATE: Hammock moved to github https://github.com/danielcrenna/hammock
Codeplex.com description of Hammock:
Hammock is a REST library for .NET that greatly simplifies consuming and wrapping RESTful services.
I’m currently working on a little web project that needed integration with LinkedIn.com. The LinkedIn API allows for OAuth authorization and authentication. They describe the process of getting a request token, authorizing it by the user and then getting an access token. Standard OAuth you might say. So I needed a way to do this in C# and found the Hammock library. Although Hammock does not only do OAuth I used it for that purpose only at the moment.
Below is the code I wrote to get a request token and send the user to the authorization page at Linkedin:
public void RequestAndAuthorize()
{
var credentials = new OAuthCredentials
{
CallbackUrl = "http://127.0.0.1/oauth/callback/",
ConsumerKey = ConfigurationManager.AppSettings["ConsumerKey"],
ConsumerSecret = ConfigurationManager.AppSettings["ConsumerSecret"],
Verifier = "123456",
Type = OAuthType.RequestToken
};
var client = new RestClient { Authority = "https://api.linkedin.com/uas/oauth", Credentials = credentials };
var request = new RestRequest { Path = "requestToken" };
RestResponse response = client.Request(request);
string token = response.Content.Split('&').Where(s => s.StartsWith("oauth_token=")).Single().Split('=')[1];
string token_secret = response.Content.Split('&').Where(s => s.StartsWith("oauth_token_secret=")).Single().Split('=')[1];
Response.Redirect("https://api.linkedin.com/uas/oauth?oauth_token=" + token);
}
Once the user has authorized your request token the LinkedIn server will redirect the user back to the callback url in this case this is http://127.0.0.1/oauth/callback. Using the returned oauth_token and oauth_token_secret (you got this one while requesting a request token) you can now get an access token so you can start making authenticated API calls from you application on behalf of the user.
This is the code that is used when the callback url is called:
public void Callback()
{
var credentials = new OAuthCredentials
{
ConsumerKey = ConfigurationManager.AppSettings["ConsumerKey"],
ConsumerSecret = ConfigurationManager.AppSettings["ConsumerSecret"],
Token = token,
TokenSecret = token_secret,
Verifier = verifier,
Type = OAuthType.AccessToken,
ParameterHandling = OAuthParameterHandling.HttpAuthorizationHeader,
SignatureMethod = OAuthSignatureMethod.HmacSha1,
Version = "1.0"
};
var client = new RestClient { Authority = "https://api.linkedin.com/uas/oauth", Credentials = credentials, Method = WebMethod.Post };
var request = new RestRequest { Path = "accessToken" };
RestResponse response = client.Request(request);
string content = response.Content;
}
As you can see Hammock is really nice and allows for easy OAuth authentication/authorization to be used.
The new Suddenelfilio.net Logo
Posted by suddenelfilio in Blog, General, Web & Design on 10/08/2010
Increase Kooboo performance in IIS 7
Posted by suddenelfilio in Asp.net, Visual Studio .Net, Web & Design on 10/08/2010
Lately I’ve been working with the Kooboo CMS which is built using ASP.NET MVC. I really like the speed Kooboo allows you to build a website with dynamic content. All that fancy footwork comes with a downside. The first time you call a Kooboo application it is really and do mean REALLY slow to start. Cause? Well the Asp.net MVC framework, Microsoft Entity framework and most of all I think the extensive caching mechanism.
I’ve experienced waiting times up till 30 seconds for the first page to appear, now this is not really acceptable for any site I admit. I remembered that there is IIS 7 extension called application warm-up tool that you can configure to call a certain url when the worker process recycles. This will trigger the site to startup again and load up all the caching and stuff. I’m not saying that the next call will be blazingly fast but at least your request will be served much faster.
I’m currently developing several sites using the Kooboo platform and I’m pleasently surprised of the possibilities of the platform. Thumbs up for the creators!
UPDATE: MS Tag REST service issues
Posted by suddenelfilio in .net, MSTagLib, Web Services on 03/08/2010
During the last 24 hours the service has been experiencing some issues when called. This has currently been resolved. If you’ve received an http 500 error code when calling the service please try again. The issue was introduced when I extended the service to record certain metrics. These metrics or stats can be seen on http://tag.ws.suddenelfilio.net/ at the end of the page.
If you experience any other problems please contact me at: mstaglib@suddenelfilio.net
MS Tag REST interface updated
Posted by suddenelfilio in MSTagLib, Web Services on 30/07/2010
Today I’ve updated the Microsoft Tag REST interface over at http://tag.ws.suddenelfilio.net/.
Since Microsoft released Tag I was a bit behind to update the interface to include the GetTagID functionality. This is now made up for and the service available for all to enjoy.
I also updated the documentation on how to use the REST interface to get a Tag’s id.
If you experience any problems please let me know using the address that you can find over at http://tag.ws.suddenelfilio.net/ or leave a comment on this page!
WpfToolkit + VisualStateManager + Visual studio .net 2008 = hotfix time
Posted by suddenelfilio in Visual Studio .Net, WPF on 05/07/2010
I got into playing a bit with WPF. I had to look at some reference samples that were created by some of my colleagues and I found that I had an issue opening any xaml file in the visual studio .net 2008 designer. The problem was the VisualStateManager.VisualStateGroups that could not be resolved. Appareantly this is some that has been introduced in the WPFToolkit which is used by our development team.
After some Googling for the issue I discovered a Hotfix released by Microsoft that should resolve my issues. The thing about this hotfix was that you also neede to install another hotfix because the fix might break something else. You gotta love the irony in that!
Anyways the hotfixes I’m talking about can be found here:
- KB958017 – Rollup Hotfix for several issues in WPF designer Visual Studio 2008
- KB963035 – VS2008 SP1 sometimes hangs irretrievably after WPF Designer
After installing both hotfixes the problem was gone I can now open the xaml files that use VisualStateManager.
More information about the VisualStateManager itself can be found here: http://windowsclient.net/wpf/wpf35/wpf-35sp1-toolkit-visual-state-manager-overview.aspx
Suddenelfilio Products & Services
Posted by suddenelfilio in .net, Blog, General, Hosting, MSTagLib, Web & Design, Web Services, wordpress on 21/06/2010
As of now Suddenelfilio.net is offering various products and services for those interested. Currently we offer 2 technology offers:
1. Microsoft Tag: suddenelfilio.net can help you with your Microsoft Tag needs.
2. WordPress Services: for a simple blog or wordpress as cms we can help you!
Have a look at the Products & Services page for more information.
Release of Ril#
Posted by suddenelfilio in .net, Web & Design, Web Services on 12/05/2010
Today I released the website for my latest personal project, a .net library for the Read It Later Service API. Through their api you can create your own client application. Using Ril# this is now easy to do in .net.
Have a look at http://rilsharp.suddenelfilio.net