public async Task <string> SendFileToServerAsync(string url, string filePath, string name,
Request request, CallbackOnFinished callbackOnFinish = null)
{
InitHttpClient();
this.ConvertRequestToJson(request);
MultipartFormDataContent form = new MultipartFormDataContent();
IFile fileToSend = await FileSystem.Current.GetFileFromPathAsync(filePath);
Stream fileToSendStream = await fileToSend.OpenAsync(FileAccess.Read);
byte[] fileToSendBytesArray = StorageUtility.ConvertStreamInBytesArray(fileToSendStream);
form.Add(new StringContent(API_KEY), "apikey");
form.Add(new StringContent(JsonRequest), "data");
form.Add(new ByteArrayContent(fileToSendBytesArray, 0, fileToSendBytesArray.Length),
name, filePath);
Debug.WriteLine("Sending json : " + JsonRequest);
HttpResponseMessage response = await httpClient.PostAsync(url, form);
response.EnsureSuccessStatusCode();
httpClient.Dispose();
string serverResponse = response.Content.ReadAsStringAsync().Result;
Debug.WriteLine("Server response = " + serverResponse);
callbackOnFinish?.Invoke(serverResponse);
return(serverResponse);
}