Mobile

 async void Button_Clicked(System.Object sender, System.EventArgs e)
 {
            var httpClient = new HttpClient();
            var resultJson = await httpClient.GetStringAsync("http://www.mi.traelopaq.net/listarpaqjson.php?text1=2264&text2=pOADSIQMASD.O398AJas&KEYAPI=ODUTRAS.9di23821@ldpli2skjs43&KEYPASo=OASmsjdu38IO1p29AA93JA0OD9K1221");

            var resultList = JsonConvert.DeserializeObject<Package[]>(resultJson);

            PaqueteList.ItemsSource = resultList;
        }
And Package is my json file:

 public class Package
    {
        
        [JsonProperty("peso")]
        public string Peso { get; set; }

        [JsonProperty("tracking_number")]
        public string TrackingNumber { get; set; }

        [JsonProperty("contenido")]
        public string Contenido { get; set; }
}

"http://www.mi.traelopaq.net/listarpaqjson.php?text1=2264&text2=pOADSIQMASD.O398AJas&KEYAPI=ODUTRAS.9di23821@ldpli2skjs43&KEYPASo=OASmsjdu38IO1p29AA93JA0OD9K1221"

HttpWebRequest wReq = WebRequest.Create("http://www.mi.traelopaq.net/listarpaqjson.php?text1=2264&text2=pOADSIQMASD.O398AJas&KEYAPI=ODUTRAS.9di23821@ldpli2skjs43&KEYPASo=OASmsjdu38IO1p29AA93JA0OD9K1221") as HttpWebRequest;
         string json = null;
         using (HttpWebResponse wResp =(HttpWebResponse) wReq.GetResponse())
         {
             using (Stream s = wResp.GetResponseStream())
             {
                 using (TextReader tr = new StreamReader(s))
                 {
                     json = tr.ReadToEnd();
                     MessageBox.Show(json);
                 }
             }
         }

Growing in Mobile Development Popularity
Hybrid applications are going to become more and more critical in the future.

It does not make sense to learn Java or hire Java developer for developing Android apps and to learn Objective-C / Swift to develop IOS applications and learn C# or hire a C# developer to develop Windows 10 phone applications.