using System;

using System.Linq;

using System.Collections.Generic;

​

​

public class Program

{

    public static void Main()

    {

        var goals = new List<Goal>();

        goals.Add(new Goal(){ID=1, Level=1, Active = true});

        goals.Add(new Goal(){ID=2, Level=1, Active = false});

        goals.Add(new Goal(){ID=3, Level=2, Active = true});

        goals.Add(new Goal(){ID=4, Level=2, Active = true});

        goals.Add(new Goal(){ID=5, Level=2, Active = false});

        goals.Add(new Goal(){ID=6, Level=2, Active = false});

        goals.Add(new Goal(){ID=7, Level=2, Active = false});

        goals.Add(new Goal(){ID=8, Level=2, Active = false});

        goals.Add(new Goal(){ID=9, Level=2, Active = false});

        goals.Add(new Goal(){ID=10, Level=2, Active = true});

        goals.Add(new Goal(){ID=11, Level=2, Active = true});

        goals.Add(new Goal(){ID=12, Level=2, Active = true});

        goals.Add(new Goal(){ID=13, Level=2, Active = true});

        goals.Add(new Goal(){ID=13, Level=2, Active = true});

        goals.Add(new Goal(){ID=14, Level=2, Active = true});

        goals.Add(new Goal(){ID=15, Level=2, Active = true});

        Random rnd = new Random();

        var tmp = goals.Select( g=> new {goal = g, weight = rnd.NextDouble()})

            .OrderByDescending(t=>t.goal.Active)

            .ThenBy(t=>t.goal.Level)

            .ThenBy(t=>t.weight)

            .Select(t=>t.goal)

            .ToList();

​

        goals.Clear();

        goals.AddRange(tmp);

​

       foreach(var g in goals)

       {

           Console.WriteLine("ID={0:00}, Level={1}, Active={2}", g.ID, g.Level, g.Active);             

       }

    }

}

​

​

​

    public class Goal {

      public int ID;

      public int Level;

    public bool Active;

}

​