using System;

using System.Collections.Generic;

using System.Collections.Specialized;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        List<a> x = new List<a>();

        x.Add(new a{no = 1});

        x.Add(new a{no = 2});

        x.Add(new a{no = 3});

x.Add(new a{no = 0});       

        List<a> y = new List<a>();

        y.Add(new a{no = 1});

        y.Add(new a{no = 2});

        y.Add(new a{no = 3});

        y.Add(new a{no = 4});

        var iseq = x.Except(y).ToList();

        Console.WriteLine("Except");

        foreach(var z in iseq)

        Console.WriteLine(z.no);

        Console.WriteLine("Where clause");

        var d = x.Where(w=>!y.Any(o=>o.no == w.no));

        foreach(var z in d)

        Console.WriteLine(z.no);

    }

}

public class a {

public int no {get;set;}

}