using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        string json = @"

{

    ""assetIndex"": {

        ""id"": ""1.7.10"",

        ""sha1"": ""f90ca2878ba3141d32d949ea7f665855dd073c65"",

        ""size"": 88096,

        ""url"": ""https://launchermeta.mojang.com/mc-staging/assets/1.7.10/f90ca2878ba3141d32d949ea7f665855dd073c65/1.7.10.json"",

        ""totalSize"": 112220327

    },

    ""assets"": ""1.7.10"",

    ""downloads"": {

        ""client"": {

            ""sha1"": ""e80d9b3bf5085002218d4be59e668bac718abbc6"",

            ""size"": 5256245,

            ""url"": ""https://launcher.mojang.com/mc/game/1.7.10/client/e80d9b3bf5085002218d4be59e668bac718abbc6/client.jar""

        },

        ""server"": {

            ""sha1"": ""952438ac4e01b4d115c5fc38f891710c4941df29"",

            ""size"": 9605030,

            ""url"": ""https://launcher.mojang.com/mc/game/1.7.10/server/952438ac4e01b4d115c5fc38f891710c4941df29/server.jar""

        },

        ""windows_server"": {

            ""sha1"": ""a79b91ef69b9b4af63d1c7007f60259106869b21"",

            ""size"": 9999270,

            ""url"": ""https://launcher.mojang.com/mc/game/1.7.10/windows_server/a79b91ef69b9b4af63d1c7007f60259106869b21/windows_server.exe""

        }

    }";

            List<List<String>> matrix = new List<List<String>>();

            matrix.Add(new List<String>());

            try

            {

                Downloads obj = JsonConvert.DeserializeObject<Downloads>(json);

​

                foreach (KeyValuePair<string, Client> kvp in obj.client)

                {

                    Console.WriteLine("URL: " + kvp.Value.url);

                    Console.WriteLine("SHA1: " + kvp.Value.sha1);

                    matrix[0].Add(kvp.Value.url);

                    matrix[0].Add(kvp.Value.sha1);

                }

            }

            catch (JsonReaderException jex)

            {

                throw;

            }

    }

​

    class Downloads

    {

      public Client client { get; set; }

      public Client server { get; set; }

    }

​

    class Client

    {

        [JsonProperty("url")]

        public string url { get; set; }

        [JsonProperty("sha1")]

        public string sha1 { get; set; }

    }

}