using System;

public class Program

{

    public static void Main()

    {

        var item = Enum.GetName(typeof(SortFilter), SortFilter.FirstName);

        Console.WriteLine(item);

    }

    public enum SortFilter  

    {  

        FirstName = 0,  

        LastName = 1,  

        Age = 2,  

        Experience = 3

    }  

}