private async Task<byte[]> GetData()
        {

            switch (DecodeContentType)
            {
                case DecodeContentTypeEnum.Hexa:
                    Hexadecimal = Compact(Hexadecimal).Replace("-", "").Trim();

                    int len = Hexadecimal.Length / 2;

                    var tmp = new byte[len];
                    for (int i = 0; i < len; i++)
                    {
                        tmp[i] = Convert.ToByte(Hexadecimal.Substring(i * 2, 2), 16);
                    }
                    return tmp;
                case DecodeContentTypeEnum.Base64:
                    return Convert.FromBase64String(Compact(Base64));
                case DecodeContentTypeEnum.File:
                    var ms = new System.IO.MemoryStream();
                    await File.Data.CopyToAsync(ms);
                    return ms.ToArray();

                default:
                    throw new ArgumentOutOfRangeException($"Decode content type not implemented {DecodeContentType}");

            }
        }