using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var lst1 = new List<Item> {

                new Item{Id=1,Name="Item 1", Description="Item 1 Description"},

                new Item{Id=2,Name="Item 2", Description="Item 2 Description"},

                new Item{Id=3,Name="Item 3", Description="Item 3 Description"},

                new Item{Id=4,Name="Item 4", Description="Item 4 Description"},

                new Item{Id=5,Name="Item 5", Description="Item 5 Description"}

            };

             var lst2 = new List<Item> {

                new Item{Id=1,Name="Item 1"},

                new Item{Id=2,Name="Item 2"}

             };

            lst1.RemoveAll(x => lst2.Any(y => y.Id == x.Id && y.Name==x.Name));

            //Your code goes here

            Console.WriteLine(string.Format("Item count in lst1 after removing lst2 items is {0}",lst1.Count));

    }

     public class Item 

    {

        public int Id {get;set;}

        public string Name {get;set;}

        public string Description {get;set;}

    }

}