using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        const string Json = @"[

 {

  ""code"": 200,

  ""priv"": [

     {

        ""file"": ""file.txt"",

        ""ext"": ""txt"",

        ""size"": ""104.86""

     },

     {

        ""file"": ""file2.exe"",

        ""ext"": ""exe"",

        ""size"": ""173.74""

     },

​

  ],

  ""pub"": [

     {

        ""file"": ""file.txt"",

        ""ext"": ""txt"",

        ""size"": ""104.86""

     },

     {

        ""file"": ""file2.exe"",

        ""ext"": ""exe"",

        ""size"": ""173.74""

     }

  ]

 }

]";

        var deserialized = Newtonsoft.Json.JsonConvert.DeserializeObject<FileList[]>(Json);

        var fileList = deserialized.First();

        Console.WriteLine("Code: " + fileList.Code);

        Console.WriteLine("Priv:");

        foreach(var f in fileList.Priv)

        {

            Console.WriteLine("File: " + f.File + " - " + f.Ext + " / " + f.Size);

        }

        Console.WriteLine("Pub:");

        foreach(var f in fileList.Pub)

        {

            Console.WriteLine("File: " + f.File + " - " + f.Ext + " / " + f.Size);

        }

    }

}

​

public class FileEntry

{

    public string File { get; set; }

    public string Ext { get; set; }

    public string Size { get; set; }

}

​

public class FileList

{

    public int Code { get; set; }

    public List<FileEntry> Priv { get; set; }

    public List<FileEntry> Pub { get; set; }

}