INPC bubble

gistfile1.cs

public class Something : INotifyPropertyChanged {
    private bool foo;

    public bool Foo {
    	get {
    		return foo;    	
    	}
    	set {
    		if(foo == value) return;

    		foo = value;
    		OnPropertyChanged("Foo");
    	}
    }

    //INPC impl
}

public class Bar {
	private readonly something;
	public Bar(Something something) {
		this.something = something;
	}

	public Foo {
		get { return something.Foo; }
		set { something.Foo = value; }
	}
}