[HostProtectionAttribute(SecurityAction.LinkDemand, ExternalThreading = true)]
public override IAsyncResult BeginWrite(
	byte[] buffer,
	int offset,
	int count,
	AsyncCallback callback,
	Object state
)

        public static Byte[] CompressString(string value)
        {
            Byte[] byteArray = new byte[0];
            if (!string.IsNullOrEmpty(value))
            {
                byteArray = Encoding.UTF8.GetBytes(value);
                using (MemoryStream stream = new MemoryStream())
                {
                    using (GZipStream zip = new GZipStream(stream, CompressionMode.Compress))
                    {
                        zip.Write(byteArray, 0, byteArray.Length);
                    }
                    byteArray = stream.ToArray();
                }
            }
            return byteArray;
        }