using System;

using System.Linq;                  

using System.Collections.Generic;

​

​

public class Program

{

    public static void Main()

    {

        IList<string> strList = new List<string>(){ "One", "Two", "Three", "Two", "Three" };

        IList<int> intList = new List<int>(){ 1, 2, 3, 2, 4, 4, 3, 5 };

​

        var distinctList1 = strList.Distinct();

        foreach(var str in distinctList1)

            Console.WriteLine(str);

        var distinctList2 = intList.Distinct();

        foreach(var i in distinctList2)

            Console.WriteLine(i);

​

    }

}

​