using System;

using System.Collections;

public class Program

{

    class MyType1 {

        public string name;

    }

    class MyType2 {

        public int id;

    }

    class MyType3 {

        public bool flag;

    }

    public static void Main()

    {

        var list = new ArrayList() {new MyType1(){name = "foo"}, new MyType2() {id = 1}, new MyType3() {flag = true}};

    }

}