How to Post Image using Byte Array[] in windows phone - c#-4.0

Question

I'm trying to post image as byte array.
I have converted image to byte as using following code now I want to post it to server.
WriteableBitmap btmMap = new WriteableBitmap(bi);
System.Windows.Media.Imaging.Extensions.SaveJpeg(btmMap, ms, 200, 200, 0, 100);
result = ms.ToArray();
How can I now perform the POST action?

Answer 1

I suggest MIME multipart as content type. It is the content type best suited for byte array, if you ask me. One way to implement this:
public static async Task<string> Upload(byte[] data, string fileName, string uri)
{
HttpClient client = new HttpClient();
HttpMultipartFormDataContent content = new HttpMultipartFormDataContent("Upload----" + DateTime.Now.ToString(System.Globalization.CultureInfo.InvariantCulture));
InMemoryRandomAccessStream contentStream = new InMemoryRandomAccessStream();
DataWriter dw = new DataWriter(contentStream);
dw.WriteBytes(data);
await dw.StoreAsync();
await dw.FlushAsync();
dw.DetachStream();
contentStream.Seek(0);
HttpStreamContent streamContent = new HttpStreamContent(contentStream);
content.Add(streamContent, "MIMEFile", fileName);
try
{
using (var message = await client.PostAsync(new Uri(uri), content))
{
if (message.StatusCode != HttpStatusCode.Ok)
{
return String.Format("ERROR ({0})",message.StatusCode);
}
var result = await message.Content.ReadAsStringAsync();
return result;
}
}
catch (Exception ex)
{
return String.Format("ERROR ({0})", ex.Message);
}
}

Answer 2

Try below code:
HttpClient httpClient = new HttpClient();
MultipartFormDataContent form = new MultipartFormDataContent();
var imageForm = new ByteArrayContent(result, 0, result.Count());
imagenForm.Headers.ContentType = new MediaTypeHeaderValue("image/jpg");
form.Add(imagenForm, "image", "nameholder.jpg");
HttpResponseMessage response = await httpClient.PostAsync("URL_here", form);
response.EnsureSuccessStatusCode();
string result = response.Content.ReadAsStringAsync().Result;
httpClient.Dispose();
Hope this help's you to get idea about how to pass byte arry to POST into API call.
EDIT:
HttpClient httpClient = new HttpClient();
MultipartFormDataContent form = new MultipartFormDataContent();
form.Add(new StringContent(UserID), "UserID");
var imageForm = new ByteArrayContent(result, 0, result.Count());
imagenForm.Headers.ContentType = new MediaTypeHeaderValue("image/jpg");
form.Add(imagenForm, "image", "nameholder.jpg");
HttpResponseMessage response = await httpClient.PostAsync("URL_here", form);
response.EnsureSuccessStatusCode();
string result = response.Content.ReadAsStringAsync().Result;
httpClient.Dispose();