System.Configuration.UrlPath.IsAbsoluteLocalPhysicalPath C# (CSharp) Method

        private static bool IsAbsoluteLocalPhysicalPath(string path) {
            if (path == null || path.Length < 3)
                return false;

            // e.g c:\foo
            return (path[1] == ':' && IsDirectorySeparatorChar(path[2]));
        }