System.Environment.Environment.InternalGetFolderPath C# (CSharp) Méthode

		internal static string InternalGetFolderPath (SpecialFolder folder)
		{
			string home = internalGetHome ();

			// http://freedesktop.org/Standards/basedir-spec/basedir-spec-0.6.html

			// note: skip security check for environment variables
			string data = internalGetEnvironmentVariable ("XDG_DATA_HOME");
			if ((data == null) || (data == String.Empty)) {
				data = Path.Combine (home, ".local");
				data = Path.Combine (data, "share");
			}

			// note: skip security check for environment variables
			string config = internalGetEnvironmentVariable ("XDG_CONFIG_HOME");
			if ((config == null) || (config == String.Empty)) {
				config = Path.Combine (home, ".config");
			}

			switch (folder) {
#if NET_1_1
			// MyComputer is a virtual directory
			case SpecialFolder.MyComputer:
				return String.Empty;
#endif
			// personal == ~
			case SpecialFolder.Personal:
#if MONOTOUCH
				return Path.Combine (home, "Documents");
#else
				return home;
#endif
			// use FDO's CONFIG_HOME. This data will be synced across a network like the windows counterpart.
			case SpecialFolder.ApplicationData:
#if MONOTOUCH
			{
				string dir = Path.Combine (Path.Combine (home, "Documents"), ".config");
				if (!Directory.Exists (dir))
					Directory.CreateDirectory (dir);

				return dir;
			}
#else
				return config;
#endif
			//use FDO's DATA_HOME. This is *NOT* synced
			case SpecialFolder.LocalApplicationData:
#if MONOTOUCH
			{
				string dir = Path.Combine (home, "Documents");
				if (!Directory.Exists (dir))
					Directory.CreateDirectory (dir);

				return dir;
			}
#else
				return data;
#endif
#if NET_1_1
			case SpecialFolder.Desktop:
#endif
			case SpecialFolder.DesktopDirectory:
				return ReadXdgUserDir (config, home, "XDG_DESKTOP_DIR", "Desktop");

			case SpecialFolder.MyMusic:
				return ReadXdgUserDir (config, home, "XDG_MUSIC_DIR", "Music");

			case SpecialFolder.MyPictures:
				return ReadXdgUserDir (config, home, "XDG_PICTURES_DIR", "Pictures");
				
			// these simply dont exist on Linux
			// The spec says if a folder doesnt exist, we
			// should return ""
			case SpecialFolder.Favorites:
			case SpecialFolder.Programs:
			case SpecialFolder.SendTo:
			case SpecialFolder.StartMenu:
			case SpecialFolder.Startup:
			case SpecialFolder.Templates:
			case SpecialFolder.Cookies:
			case SpecialFolder.History:
			case SpecialFolder.InternetCache:
			case SpecialFolder.Recent:
			case SpecialFolder.CommonProgramFiles:
			case SpecialFolder.ProgramFiles:
			case SpecialFolder.System:
				return String.Empty;
			// This is where data common to all users goes
			case SpecialFolder.CommonApplicationData:
				return "/usr/share";
			default:
				throw new ArgumentException ("Invalid SpecialFolder");
                        }
                }