using System;

using System.Collections.Generic;

using Newtonsoft.Json;      

​

public class Program

{

    public static void Main()

    {

        string json = @"[""on4ThnU7"",""n71YZYVKD"",""CVfSpM2W"",""10kQotV""]";

        List<string> myStrings = JsonConvert.DeserializeObject<List<string>>(json);

        foreach (string str in myStrings)

        {

            Console.WriteLine(str);

        }

    }

}