/// <summary>
/// Observe collection element's PropertyChanged event.
/// </summary>
/// <typeparam name="TCollection">Type of collection</typeparam>
/// <typeparam name="TElement">Type of element</typeparam>
/// <param name="source">The source.</param>
/// <returns>PropertyChanged event stream.</returns>
/// <exception cref="System.ArgumentNullException">source</exception>
public static IObservable <SenderEventArgsPair <TElement, PropertyChangedEventArgs> > ObserveElementPropertyChanged <TCollection, TElement>(TCollection source)
where TCollection : INotifyCollectionChanged, IEnumerable <TElement>
where TElement : class, INotifyPropertyChanged
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
return(ObserveElementCore <TCollection, TElement, SenderEventArgsPair <TElement, PropertyChangedEventArgs> >
(
source,
(x, observer) => x.PropertyChangedAsObservable().Subscribe(y =>
{
var pair = SenderEventArgsPair.Create(x, y);
observer.OnNext(pair);
})
));
}
/// <summary>
/// 内容に変更が発生した
/// </summary>
/// <param name="pair"></param>
private void Changed(SenderEventArgsPair <People, PropertyChangedEventArgs> pair)
{
MessageBox.Show("Changed");
}
