Observablecollection listbox not updating

The problem is that after you swap out one Observable Collection for a new one, the view is still bound to the old one.A common “fix” for this problem is to fire a Property Changed event to notify the view that the collection has been replaced.When a view binds to an Observable Collection, it subscribes to events from that instance.It expects to be notified when items are added, removed, or replaced within that instance of the collection.Just about every person who uses Observable Collections makes this mistake at least once.

The binding is not to the property of the parent object, but to that specific instance of the collection itself.A common mistake is to modify the parent object’s property and replace one Observable Collection with another.



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