using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        List<A> allAs = new List<A>();

        allAs.Add(new A(10, "CAR"));

        allAs.Add(new A(22, "BUS"));

        allAs.Add(new A(100, "TRAIN"));

        allAs.Add(new A(0, "HYPERLOOP"));

        Dictionary<string, int> nameweight = new Dictionary<string, int>()

        {{"HYPERLOOP", 1}, {"TRAIN", 2}, {"CAR", 3}, {"BUS", 4}};

        allAs = allAs.OrderBy(x => nameweight[x.name]).ToList();

        foreach (A item in allAs)

        {

            Console.WriteLine("{0} - {1}", item.name, item.x);

        }

    }

​

    public class A

    {

        public float x;

        public string name;

        public A(float x, string name)

        {

            this.x = x;

            this.name = name;

        }

    }

}