windows phone 8.1 - WP read user_id from JSON and show it -

i want show user_id following json:

[{"username":"kac26","email":"xklemenx@gmail.com","city":"slovenj gradec","id":"15"}]

so save json class. json webpage.

my class:

public class class2 {     public string username{ get; set; }     public string email { get; set; }     public string city { get; set; }     public int id { get; set; } } 

saving json class:

private async void login_tapped(object sender, tappedroutedeventargs e) { string str = user.text; //get user name textbox  httpclient http = new httpclient(); var response= await http.getstringasync("http://mywebpage.com/events/apis/user.php/user=" + str); } 

then want show user id in textbox_id when press button.

private  void button_tapped(object sender, tappedroutedeventargs e) { textbox_id.text = class2.id; } 

but error shows when try reach class2.id know how that? , save json class correct?

thanks!!!

in "saving json class", don't see doing that. here's how deserialize string returned service:

private async void login_tapped(object sender, tappedroutedeventargs e) {     string str = user.text; //get user name textbox      httpclient http = new httpclient();     var response = await http.getstringasync("http://mywebpage.com/events/apis/user.php/user=" + str);      class2 myclass2 = null;      try     {         var jsonserializer = new datacontractjsonserializer(typeof(class2));          using (var stream = new memorystream(system.text.encoding.utf8.getbytes(response)))         {              myclass2 = jsonserializer.readobject(stream) class2;         }     }     catch     {         // serialization error occurred     }      // myclass2  } 

also, fyi if don't want property names on response class match json properties (for example, not lower case), can use datacontractattribute , datamemberattribute on class so:

[datacontract] public class class2 {     [datamember(name = "username")]     public string username { get; set; }      [datamember(name = "email")]     public string email { get; set; }      [datamember(name = "city")]     public string somecompletelydifferentnameforcity { get; set; }      [datamember(name = "id")]     public int id { get; set; } }