using System;
using System.Collections.Generic;
using System.Linq;

public class Test
{
	
	public class Details
{
    public   int id;
    public string symbol;
    public string code;
    public override string ToString() {
    	return string.Format("{0} {1} {2}", id, symbol, code);
    }
}
	
	public static void Main()
	{
List<Details> list1 = new List<Details>();  
List<Details> list2 = new List<Details>();

list1.Add(new Details() { id=1,symbol="ANSI",code="NITE"});
list1.Add(new Details() { id = 1, symbol = "ANSI", code = "CALGO" });
list1.Add(new Details() { id = 1, symbol = "ANSI", code = "CANT" });
list1.Add(new Details() { id=2,symbol="ANSI",code="NITE"});
list1.Add(new Details() { id = 2, symbol = "ANSI", code = "CALGO" });
list1.Add(new Details() { id = 2, symbol = "ANSI", code = "CANT" });

list2.Add(new Details() { id = 1, symbol = "ANSI", code = "NITE" });
list2.Add(new Details() { id = 1, symbol = "ANSI", code = "CALGO" });
list2.Add(new Details() { id = 2, symbol = "ANSI", code = "NITE" });
foreach (var v in
list1.Where(x=>
    list2.Any(z=>x.id==z.id && x.symbol==z.symbol)
&& !list2.Any(z => x.id==z.id && x.symbol==z.symbol && x.code==z.code))

) {
	Console.WriteLine(v);
}
	}
}