using System;

public class Program

{

    public static void Main()

    {

        var tA = new MyType{ Id = 1 };

        var tB = new MyType{ Id = 1 };

        var tC = new MyType{ Id = 2 };

        Console.WriteLine("tA == tA: " + (tA == tA));

        Console.WriteLine("tA == tB: " + (tA == tB));

        Console.WriteLine("tA == tC: " + (tA == tC));

        Console.WriteLine();

        Console.WriteLine("tA.Equals(tA): " + (tA.Equals(tA)));

        Console.WriteLine("tA.Equals(tB): " + (tA.Equals(tB)));

        Console.WriteLine("tA.Equals(tC): " + (tA.Equals(tC)));

        Console.WriteLine();

        Console.WriteLine("Equals(tA, tA): " + (Equals(tA, tA)));

        Console.WriteLine("Equals(tA, tB): " + (Equals(tA, tB)));

        Console.WriteLine("Equals(tA, tC): " + (Equals(tA, tC)));

        Console.WriteLine();

    }   

}

​

public class MyType

{

    public int Id {get;set;}

    //*

    public static bool operator ==(MyType A, MyType B)

    {

        return Equals(A, B);

    }

    public static bool operator !=(MyType A, MyType B)

    {

        return !Equals(A, B);

    }

    //*/

    public override bool Equals(object other)

    {

        var otherAsMyType = other as MyType;

        if (otherAsMyType == null)

        {

            return false;

        }

        return Id == otherAsMyType.Id;

    }

    public override int GetHashCode()

    {

        return Id.GetHashCode();

    }

}

​