C# 后台获取前台交互判断

前台传来明细 ，判断是否修改，在把前台 的数据组成新的类保存

public class tt
    {
        public string id { get; set; }
        public string e_id { get; set; }
        public string name { get; set; }
        public int age { get; set; }
        public bool sex { get; set; }

    }
    public class t
    {
        public string id { get; set; }
        public string name { get; set; }
        public List<tt> dd { get; set; }
    }
    class Program
    {

        static void Main(string[] args)
        {
            var q = new List<tt> { new tt { id = "123",e_id="1", name = "pg", age = 12, sex = true }, new tt { id = "124",e_id="1", name = "pp", age = 13, sex = true } };  //后台数据
            var w = new List<tt> { new tt { name = "pg", e_id = "2", age = 12, sex = true }, new  ConsoleApplication2.tt { name = "pp", e_id = "2", age = 13, sex = true }, new tt { name = "ppd", e_id = "2", age = 11, sex = true } };  //前台数据 

            var e =   new t { id = "1", name = "pg", dd = q  };     //父行

            var ischange1 = false;
            var ischange2 = false;
            foreach (var item in w)
            {
                item.e_id = e.id;    //父ID
                tt ex = q.Where(d => d.name == item.name).FirstOrDefault();
                if (ex == null)
                {
                    ischange2 = true;
                }
                else
                {
                    if (ex.age != item.age || ex.sex != item.sex)
                    {
                        ischange2 = true;
                    }
                }
            }
 
             if (q.Count != w.Count)
            {
                ischange2 = true;
            }
            if (ischange1 == true || ischange2 == true)
            {
                if (ischange2 == true)
                {
                    e.dd = w;
                }
            }
            Console.WriteLine(ischange2);

            Console.ReadKey(true);
        }

    }