System.IO.Path.Path.GetExtension C# (CSharp) Méthode

		public static string GetExtension (string path)
		{
			if (path == null)
				return null;

			if (path.IndexOfAny (InvalidPathChars) != -1)
				throw new ArgumentException ("Illegal characters in path.");

			int iExt = findExtension (path);

			if (iExt > -1)
			{
				if (iExt < path.Length - 1)
					return path.Substring (iExt);
			}
			return string.Empty;
		}