FCC/Applications/SinoChem/WebApiClients/SinochemPosClient/PosCommunicator.cs

using Newtonsoft.Json;
using SinochemPosClient.Models;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

namespace SinochemPosClient
{
    public class PosCommunicator<TRequest, TResponse>
        where TRequest : RequestBase
        where TResponse : ResponseBase
    {
        private HttpClient client;
        private string url;

        public PosCommunicator(string apiUrl)
        {
            client = new HttpClient();
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

            this.url = apiUrl;
        }

        public void SendRequest(TRequest request)
        {
            try
            {
                var requestAsJson = JsonConvert.SerializeObject(request);

                var formVariables = new List<KeyValuePair<string, string>>();
                formVariables.Add(new KeyValuePair<string, string>("param", requestAsJson));
                var formContent = new FormUrlEncodedContent(formVariables);

                HttpResponseMessage httpResponse = client.PostAsync(url, formContent).Result;
                httpResponse.EnsureSuccessStatusCode();

                Response = JsonConvert.DeserializeObject<TResponse>(httpResponse.Content.ReadAsStringAsync().Result);//.ReadAsAsync<TResponse>().Result;
            }
            catch (Exception ex)
            {
                Response = null;
                Console.WriteLine(ex);
            }
        }

        public TResponse Response
        {
            get;
            private set;
        }
    }
}