ActiveTextureManagement.CacheController.GetMD5String C# (CSharp) 메소드

        static String GetMD5String(String file)
        {
            if(file == LastFile)
            {
                return MD5String;
            }
            MD5String = null;
            foreach (String extension in Extensions)
            {
                if (File.Exists(file + extension))
                {
                    FileStream stream = File.OpenRead(file + extension);
                    MD5 md5 = MD5.Create();
                    byte[] hash = md5.ComputeHash(stream);
                    stream.Close();
                    MD5String = BitConverter.ToString(hash);
                    LastFile = file;
                    return MD5String;
                }
            }
            return MD5String;
        }