private void OnChildPropertyChanged(object sender, PropertyChangedEventArgs propertyChangedEventArgs)
{
var subscription = NotifySubscribers.FirstOrDefault(pair => pair.Value.Equals(sender));
var args = new NotifyRouter.ChildPropertyChangedEventArgs(propertyChangedEventArgs.PropertyName)
{
ParentPropertyName = subscription.Key,
Value = sender.GetType().GetProperty(propertyChangedEventArgs.PropertyName).GetValue(sender)
};
ChildPropertyChanged?.Invoke(sender, args);
}
private void SetNotifyRouting <T>(ref T oldValue, T newValue, string propertyName)
{
if (oldValue is INotifyPropertyChanged notifyOldValue)
{
if (NotifySubscribers.ContainsKey(propertyName))
{
NotifySubscribers[propertyName].PropertyChanged -= OnChildPropertyChanged;
}
}
SubscribeChildNotifications(newValue, propertyName);
}
private void SubscribeChildNotifications <T>(T newValue, string propertyName)
{
if (newValue is INotifyPropertyChanged notifyNewValue)
{
if (!NotifySubscribers.ContainsKey(propertyName))
{
NotifySubscribers.Add(propertyName, notifyNewValue);
}
notifyNewValue.PropertyChanged += OnChildPropertyChanged;
}
}
//call the event
public void Notify(string name)
{
list.Add(name);
//instantiate the delegate
NotifySubscribers ns = new NotifySubscribers((l) =>
{
Console.WriteLine("Welcome {0}", name);
});
//bind the delegate to the event
EventNotify += ns;
}
public void UnSubscribeForVideo(NotifySubscribers subscriber)
{
NotifySubsribersHandler -= subscriber;
}