using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Test t = new Test();

        t.r.SetValue(5);

        t.r.SetValue(6);

        t.r.SetValue(7);

    }

}

​

public class ObservableProperty<T> where T : struct

{

    public T Value{get; private set;}

    Action<T> methods;

    public ObservableProperty(T _value)

    {

        Value = _value;

    }

    public void Subscribe(Action<T> action)

    {

        methods += action;

    }

    private void Notify()

    {

        methods(Value);

    }

    public void SetValue(T value)

    {

        Value = value;

        Notify();

    }

    public static implicit operator T(ObservableProperty<T> property)

    {

        return property.Value;

    }

}

​

public class Resource : ObservableProperty<int>

{

    public Resource(int i) : base(i){}

}

​

public class Test

{

    public Resource r = new Resource(10);

    public Test()

    {

        r.Subscribe(OnChange);

    }

    public void OnChange(int i)

    {

        int x = r;

        Console.WriteLine(x.ToString());

    }

}

​

​

​

​

​

​

​

​

​