gistfile1.cs

public MemoryStream ZipStream(MemoryStream input){
 
    UIImage img = input.ToUIImage ();
    img = img.Scale (new System.Drawing.SizeF (((img.Size.Width / 100) * 40), ((img.Size.Height / 100) * 40)), 0);
    var compressed = img.AsJPEG(0.7f);
    var minput = compressed.AsStream ();
 
    MemoryStream zip = new MemoryStream ();
    GZipStream zipper = new GZipStream (zip, CompressionMode.Compress);
    minput.CopyTo(zipper);
    zipper.Flush();
    zip.Position = 0;
    zip.Seek (0, SeekOrigin.Begin);
    return zip;
}
 
//data is the raw byte array of the image/file being sent
var compressed = ZipStream(new MemoryStream (data));
//we use servicestack but this could be HttpClient - there really is no difference in this context
var client = new ServiceStack.JsonServiceClient (Settings.ApiUrl);
 
string uploadString = Settings.ApiUrl + "/api/photobatch/?id={0}&latitude={1}&longitude={2}&phonenumber={3}&dealersemail={4}&usersemail={5}&SecondaryEmail={6}";
uploadString = uploadString.With (item.Id, item.Lat, item.Lng, Settings.PhoneNumber, Settings.DealerEmail, Settings.Email, Settings.SecondaryEmail);
client.PostFile<dynamic> (uploadString, compressed, "{0}.gz".With (item.Id), "application/x-gzip");