.NET 4.x Json десериализация - C#

Формулировка задачи:

помогите десириализовать json туплю не имоверно но не понимаю как это работает вот пример входной строки

{
  "list": [
    {
      "photo": {
        "id": 3868245,
        "url": "/photo/3868245",
        "subject": "chii",
        "sq150_url": "http://image02.worldcosplay.net/uploads/sq150/31047/kvdsoxmlwiefrowoyjrweblyezhihmkwdaohpakj-3000.jpg",
        "sq300_url": "http://image02.worldcosplay.net/uploads/sq300/31047/kvdsoxmlwiefrowoyjrweblyezhihmkwdaohpakj-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3868235,
        "url": "/photo/3868235",
        "subject": "Jem",
        "sq150_url": "http://image02.worldcosplay.net/uploads/sq150/31047/yndvmraohwuvebbanxjegoblrrdvoirwfjpmljdm-3000.jpg",
        "sq300_url": "http://image02.worldcosplay.net/uploads/sq300/31047/yndvmraohwuvebbanxjegoblrrdvoirwfjpmljdm-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3868158,
        "url": "/photo/3868158",
        "subject": "junko enoshima yukata",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/oepwguizadfcqykjlvvwrbnziaqcovweshtgjmlg-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/oepwguizadfcqykjlvvwrbnziaqcovweshtgjmlg-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3868097,
        "url": "/photo/3868097",
        "subject": "sweet lolita",
        "sq150_url": "http://image02.worldcosplay.net/uploads/sq150/31047/vizfjmpzakddidrstqjswxkaiyqdhhkxkmwzfyzr-3000.jpg",
        "sq300_url": "http://image02.worldcosplay.net/uploads/sq300/31047/vizfjmpzakddidrstqjswxkaiyqdhhkxkmwzfyzr-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3868042,
        "url": "/photo/3868042",
        "subject": "arachne",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/rsluwmvzqizoolxmbyjoqexkxksckldazkalockr-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/rsluwmvzqizoolxmbyjoqexkxksckldazkalockr-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3867986,
        "url": "/photo/3867986",
        "subject": "luka megurine ",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/mdkodmeyyhpycsuxlxgifiigznkkzhgurtcdkgds-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/mdkodmeyyhpycsuxlxgifiigznkkzhgurtcdkgds-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3867890,
        "url": "/photo/3867890",
        "subject": "luka megurine ",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/djryctrkjvyyeqmoiyofynolvwhkjnqddkyftvmx-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/djryctrkjvyyeqmoiyofynolvwhkjnqddkyftvmx-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3866656,
        "url": "/photo/3866656",
        "subject": "steampunk ",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/ghiibmreatfvjvkioclnlwsrgqgrojeggfmmirqr-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/ghiibmreatfvjvkioclnlwsrgqgrojeggfmmirqr-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3866620,
        "url": "/photo/3866620",
        "subject": "nana",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/jpwadoakdwtoyoosidladbcgrbvpziborideozvn-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/jpwadoakdwtoyoosidladbcgrbvpziborideozvn-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3866586,
        "url": "/photo/3866586",
        "subject": "hello kitty",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/wghvqwvodzlldhpljprbmsnighxwhotzsbomohgj-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/wghvqwvodzlldhpljprbmsnighxwhotzsbomohgj-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3866571,
        "url": "/photo/3866571",
        "subject": "luki",
        "sq150_url": "http://image02.worldcosplay.net/uploads/sq150/31047/iucbtkdhasijpwpaijdbnjcjqzjgyvtxxvoclvas-3000.jpg",
        "sq300_url": "http://image02.worldcosplay.net/uploads/sq300/31047/iucbtkdhasijpwpaijdbnjcjqzjgyvtxxvoclvas-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3866548,
        "url": "/photo/3866548",
        "subject": "asuka",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/sxogffyvidhtdatgewsipvcpyxevacmaaixjfgow-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/sxogffyvidhtdatgewsipvcpyxevacmaaixjfgow-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3866114,
        "url": "/photo/3866114",
        "subject": "stocking ",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/zdphvhnhznfcwdzgcqklczswiojfyfomeozmxkvh-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/zdphvhnhznfcwdzgcqklczswiojfyfomeozmxkvh-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3865932,
        "url": "/photo/3865932",
        "subject": "boa",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/klcitcxmqscibnotdbjolhavlpfmitpxlfybszwb-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/klcitcxmqscibnotdbjolhavlpfmitpxlfybszwb-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3865784,
        "url": "/photo/3865784",
        "subject": "s sailor chibiusa S S moon",
        "sq150_url": "http://image01.worldcosplay.net/uploads/sq150/31047/kdrhkgotxkljcerbqaaqelximsxjgfdobbmaqcez-3000.jpg",
        "sq300_url": "http://image01.worldcosplay.net/uploads/sq300/31047/kdrhkgotxkljcerbqaaqelximsxjgfdobbmaqcez-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    },
    {
      "photo": {
        "id": 3865707,
        "url": "/photo/3865707",
        "subject": "madoka kaname",
        "sq150_url": "http://image02.worldcosplay.net/uploads/sq150/31047/xfquqdmftpnzwvukqnvatyybunmeejloeuolpeei-3000.jpg",
        "sq300_url": "http://image02.worldcosplay.net/uploads/sq300/31047/xfquqdmftpnzwvukqnvatyybunmeejloeuolpeei-3000.jpg",
        "does_like": false,
        "is_owner": false,
        "viewable": true
      }
    }
  ],
  "pager": {
    "previous_page": 1,
    "current_page": 2,
    "next_page": 3
  },
  "has_error": 0
}

Решение задачи: «.NET 4.x Json десериализация»

textual
                            Листинг программы 
                        

                            using System;
using System.IO;
using System.Linq;
using System.Web.Script.Serialization;
 
internal sealed class Program {
  static void Main() {
    String json = File.ReadAllText(@"C:\source.json");
    
    var des = new JavaScriptSerializer().Deserialize<dynamic>(json);
    Console.WriteLine(des["list"][0]["photo"]["url"]);
  }
}
                        