How to handle the add to list event?
One simple solution is to introduce an Add method for the list in your project and handle the event there. It doesn’t answer the need for an event handler but can be useful for some small projects.
Is it good to raise multiple itemremoved events?
IMO the raising of multiple ItemRemoved events inside the Clear () method isn’t that good because you are raising the event before the item is removed. You should either have an additional event ItemsCleared or you should raise the ItemRemoved events after the clearing of that list.
Which is a better name for eventlist < T >?
In general I like your implementation. It is leightweight and is doing exactly what it should. The name EventList which reads like a list of events instead of a list with events. Because there is already a ObservableCollection maybe an ObservableList would be a better name.
When does items.itemadd event run in outlook?
Items.ItemAdd event (Outlook) Occurs when one or more items are added to the specified collection. This event does not run when a large number of items are added to the folder at once.
When to add onbeforeunload event in JavaScript?
For detailed explanations, refer to these two very similar questions here and here on Stackoverflow. onbeforeunload event must be added after loading of pop-up window. For example, you can add it at the end of its load event like below; As stated above, you need to bind the onbeforeunload event to the window after it is opened.
How to capture close event of popup window in JavaScript?
You probably do not want to overwrite the value of onbeforeunload, because this will interfere with the popout’s handler if it also uses that hook. Use addEventListener (‘beforeunload’.) instead. Please note, other options exists for events, such as unload and pageHide. Read docs to see what event is best for your implementation.