c# - Is it possible to implement Property Changed as Attribute?

Question

I have found an implementation of Propperty Changed Event, where i can Call Property changed without the Name of the Property in the web. And then i have build a Extension Method with it wich is here

public static void OnPropertyChanged(this INotifyPropertyChanged iNotifyPropertyChanged, string    propertyName = null)
{
    if (propertyName == null)
        propertyName = new StackTrace().GetFrame(1).GetMethod().Name.Replace("set_", "");
    FieldInfo field = iNotifyPropertyChanged.GetType().GetField("PropertyChanged", BindingFlags.Instance | BindingFlags.NonPublic);
    if (field == (FieldInfo) null)
        return;
    object obj = field.GetValue((object) iNotifyPropertyChanged);
    if (obj == null)
        return;
    obj.GetType().GetMethod("Invoke").Invoke(obj, new object[2]
    {
        (object) iNotifyPropertyChanged,
        (object) new PropertyChangedEventArgs(propertyName)
    });
}

So i can call Property changed like this:

private bool _foo;
public bool Foo
{
    get { _foo; }
    private set
    {
        _foo = value;
        this.OnPropertyChanged();
    }
}

But I thought, it would be nicer if i don't have to implement the getter and setter of a Property when i use Property changed.

Does anyone now how to implement the OnPropertyChanged Method as Attribute, maybe with AOP?

So that Auto-Property can be used for Property Changed like this:

[OnPropertyChanged]
public bool Foo {set;get;}

Answer 1

Check out Fody, and the PropertyChanged add-in. It will modify the IL after compilation to add the code to raise the PropertyChanged event for your properties. It's similar to PostSharp, mentioned in Lasse's answer, but it's free and open-source.