ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides what about INotifyCollectionChanging?

Question

I want to be able to add a range and get updated for the entire bulk.

I also want to be able to cancel the action before it\'s done (i.e. collection changing besides

Answer 1

You can also use this code to extend ObservableCollection:

public static class ObservableCollectionExtend
{
    public static void AddRange(this ObservableCollection source, IEnumerable items)
    {
        foreach (var item in items)
        {
            source.Add(item);
        }
    }
}

Then you don't need to change class in existing code.