c# enum 마지막값 얻기

using System;
using System.Linq;

public class Test
{
    internal enum ttt
    {
        QAZ,
        XSW,
        EDC,
        VFR,
    }

    public static void Main()
    {
        var first = Enum.GetValues(typeof(ttt)).Cast<ttt>().First();
        var last = Enum.GetValues(typeof(ttt)).Cast<ttt>().Last();
        Console.WriteLine(first);
        Console.WriteLine(last);
    }
}

QAZ
VFR