// No NuGet Packages, only C# standard class libraries.

using System;

using System.Net;

using System.IO;

using System.Text;

using System.Web;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Using REST in C#");

        String url = "https://map-prototype.herokuapp.com/api/mapsList/";

        String urlPost = "https://map-prototype.herokuapp.com/api/map/";

​

        Console.WriteLine("GET");

        Console.WriteLine(HttpGet(url));

        String[] paramcpr = new String[2] {"cpr","map"};

        String[] parammap = new String[2] {"xxxxxxxxxx","123"};

        Console.WriteLine("POST");

        Console.WriteLine(HttpPost(urlPost, paramcpr, parammap));

        Console.WriteLine(HttpGet(url));

    }

    // GET

    static string HttpGet(string url) {

      HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest;

      string result = null;

      using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)

      {

        StreamReader reader = new StreamReader(resp.GetResponseStream());

        result = reader.ReadToEnd();

      }

      return result;

    }

    // POST

    static string HttpPost(string url, string[] paramName, string[] paramVal)

    {

      HttpWebRequest req = WebRequest.Create(new Uri(url)) as HttpWebRequest;

      req.Method = "POST";  

      req.ContentType = "application/x-www-form-urlencoded";

      // Build the parameters for the request

      StringBuilder paramz = new StringBuilder();

      for (int i = 0; i < paramName.Length; i++) {

        paramz.Append(paramName[i]);

        paramz.Append("=");

        paramz.Append(HttpUtility.UrlEncode(paramVal[i]));

        paramz.Append("&");

      }

      // Encode the parameters as form data

      byte[] formData = UTF8Encoding.UTF8.GetBytes(paramz.ToString());

      req.ContentLength = formData.Length;

      // Send the request

      using (Stream post = req.GetRequestStream())  

      {  

        post.Write(formData, 0, formData.Length);  

      }

      // Get the response

      string result = null;

      using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)  

      {  

        StreamReader reader =  new StreamReader(resp.GetResponseStream());

        result = reader.ReadToEnd();

      }

      return result;

    }

}