c# 敏捷3 连接，批量处理，分页

  class Program
    {
        public class post
        {
            public int id { get; set; }
            public string name { get; set; }
            public int age { get; set; }
            public string pd { get; set; }
        }
        public class get
        {
            public int id { get; set; }

            public string  source { get; set; }
        }

        static void Main(string[] args)
        {
       

            var pro = new List<post>
          {
                new post { id = 1,name="123",age=1,pd="sad"},
                new post { id = 2,name="124",age=11,pd="sad"},
                new post { id =4,name="125",age=111,pd="sad"},
                new post {id = 5, name="126",age=1111,pd="sad"},
          };
            var prd = new List<get>
          {
                new get { id =1,source="123"},
                new get { id = 4,source="124s"},
                new get {id = 3, source="124d5"},
                new get {id = 6, source="12f6"},
          };

            var uds = pro.Join(prd, u => u.id, d => d.id, (u, d) => new { id = u.id, name = u.name, age = u.age, source = d.source }).ToList();
            //uds = [{ id = 1, name = "123", age = 1, source = "123" },{ id = 4, name = "125", age = 111, source = "124s" }];

            pro.ForEach(o => { o.pd = null; if (o.pd == null) o.pd = "sd"; });//批量处理

            int pageIndex = 1, pageSize=10; //分页
            pro.Skip((pageIndex - 1) * pageSize).Take(pageSize).ToList();

         　　var union = pro.Select(o =>  o.id).Union(prd.Select(o => o.id)).ToList() ;  // 接表
            Console.Read();

        }

    }