[ASP.NET] [WEB API] Problem with HttpWebRequest.ContentType

Hey guys,

I'm trying to send an image taken from my webcam to a web API for processing. So I take a screenshot and store it in a Texture2D variable, then convert that to a byte[] by calling EncodeToPNG().

What kind of ContentType should I set for this? None of the ones I've tried seem to work.

This is my HttpWebRequest code:

 myWebRequest = (HttpWebRequest)WebRequest.Create("http://localhost:64050/api/ZXing/BeginDecode");
         myWebRequest.Method = "POST";
         
         //Set ContentType here
         
         myWebRequest.ContentLength = bytes.Length;
 
         Stream dataStream = myWebRequest.GetRequestStream();
         dataStream.Write(bytes, 0, bytes.Length);
         dataStream.Close();
 
         response = myWebRequest.GetResponse();
         Stream data = response.GetResponseStream();
         StreamReader reader = new StreamReader(data);
         Debug.Log(reader.ReadToEnd());

Here's my camera code, just incase:

         camSnapshot = new Texture2D(camTex.width, camTex.height, TextureFormat.RGB24, false);
 
         camSnapshot.SetPixels(camTex.GetPixels());
         camSnapshot.Apply();
         bytes = camSnapshot.EncodeToPNG();
 
         File.WriteAllBytes(Application.dataPath + "/../SavedScreen.png",bytes);

Making and working with Web APIs are new to me so sorry if it's a dumb problem.

Thanks.