using System;

public class Program

{

    public static void Main()

    {

        myClass[] arr = new myClass[] { new myClass() };        

        var objVar = new Reference<object>(t => arr[0].obj = t, () => arr[0].obj);

        objVar.Value = new someOtherClass();

        Console.WriteLine(arr[0].obj);

    }

    class myClass

    {

        public object obj = null;

    }

​

    class someOtherClass

    {  }

    class Reference<T> {

        private Action<T> setter;

        private Func<T> getter;

        public Reference(Action<T> setter, Func<T> getter) {

            this.setter = setter;

            this.getter = getter;

        }

        public T Value {

            get {

                return getter();

            }

            set {

                setter(value);

            }

        }

    }

}