Collections That Listen To It's Items Events

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.NET2.0

Hi,

I have a custom collection object that fires events when items are added, removed and modified.

What I would like to do is each time an item is added, my collection object will discover the events for that item and will create listeners for each event that it finds.

This way the collection object can listen to the events for each item it contains. If an item in the collection fires an event the collection can then fire its own event to bubble that item's event up.

It other words I have collections that contains collections that contains collections and I want to pass events up from a lower collection up to a higher collection till it reaches the top most parent object.

What's a good way to do this?

<edit>I forgot to mention that I am using 2.0 and so I have to wire this up myself.

Posted 27-Dec-10 16:36pm

Sling Blade 22

Updated 28-Dec-10 8:46am

v3

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Not Active · Answer 1 · 2010-12-27T17:21:00

Solution 1

It sounds like you are creating an ObservableCollection [^]and WPF Routed Events[^]

Posted 27-Dec-10 17:21pm

Not Active

Abhinav S · Answer 2 · 2010-12-27T17:33:00

Solution 2

If the event is an add event in CollectionChanged event, I would add my events to each item (using the e arguments).

Once these events fire, I would then either pass them onto the parent or handle them here - as required.

Posted 27-Dec-10 17:33pm

Abhinav S

Sling Blade 22 · Answer 3 · 2010-12-27T18:03:00

Solution 3

I forgot to mention that I am using 2.0 and so I have to wire this up myself.

Posted 27-Dec-10 18:03pm

Sling Blade 22

Comments

[no name] 28-Dec-10 9:01am

This should be added to the original question, not as answer.

Sling Blade 22 28-Dec-10 14:44pm

Would you have noticed it if I did?