using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var list_1 = new List<MyObject>

        {

            new MyObject{ Code = "P1", Description = "Fisk", Id = 0  },

            new MyObject{ Code = "P2", Description = "Disk", Id = 1  },

            new MyObject{ Code = "P3", Description = "Risk", Id = 2  },

        };

​

        var list_2 = new List<MyObject>

        {

            new MyObject{ Code = "P1", Description = "Fisk", Id = 0  },

            new MyObject{ Code = "P2", Description = "Disk", Id = 1  },

            new MyObject{ Code = "P3", Description = "Risk", Id = 2  },

        };

        var t = list_1.Equals(list_2);

        var t_1 = list_1[0].Equals(list_2[0]);

        var t_2 = list_1.Take(1).Equals(list_2.Take(1));

        var t_3 = list_1.SequenceEqual(list_2);

        Console.WriteLine("t: {0} t_1: {1} t_2: {2},t_3 {3}", t, t_1,t_2,t_3);

    }

​

    public class MyObject

    {

        protected bool Equals(MyObject other)

        {

            return Id == other.Id && string.Equals(Code, other.Code) && string.Equals(Description, other.Description);

        }

​

        public override bool Equals(object obj)

        {

            if (ReferenceEquals(null, obj))

                return false;

            if (ReferenceEquals(this, obj))

                return true;

            if (obj.GetType() != this.GetType())

                return false;

            return Equals((MyObject)obj);

        }

​

        public override int GetHashCode()

        {

            unchecked

            {

                var hashCode = Id;

                hashCode = (hashCode * 397) ^ (Code != null ? Code.GetHashCode() : 0);

                hashCode = (hashCode * 397) ^ (Description != null ? Description.GetHashCode() : 0);

                return hashCode;

            }

        }

​

        public int Id

        {

            get;

            set;

        }

​

        public string Code

        {

            get;

            set;

        }

​

        public string Description

        {

            get;

            set;

        }

    }

}