using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {       

        var names = new List<string>{"aap","noot","mies","wim","zus","jet","teun","vuur"};

        var participants = new List<string>(names.Count); //crestron does not support HashSet so use list and check for duplicates instead

        var spinBottle = new Random();

        while(participants.Count != names.Count)

        {

            var participant = names[spinBottle.Next(names.Count)];

            if(participants.IndexOf(participant)<0)  //if name not in list indexof return -1

            {

                participants.Add(participant);                          

            }

        }   

​

        foreach(var name in participants)

        {

            Console.WriteLine(name);

        }       

    }

}

​