System.Configuration.UrlPath.GetDirectoryOrRootName C# (CSharp) Метод

        internal static string GetDirectoryOrRootName(string path) {
            string dir;
    
            dir = Path.GetDirectoryName(path);
            if (dir == null) {
                // dir == null if path = "c:\"
                dir = Path.GetPathRoot(path);
            }
    
            return dir;
        }