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Editorial Team
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Asked: 2026-05-13T10:58:08+00:00

I’m trying to use a ListBox.DataSource = ObservableCollection, however I can’t figure out how

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I’m trying to use a ListBox.DataSource = ObservableCollection, however I can’t figure out how to have the listbox automatically update when my OC updates. I can hook the CollectionChanged event on the OC, however what do I need to do to the listbox to make it update?

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  1. Editorial Team

    Based on your question, it sounds like you’re trying to use ObservableCollection<T> in a WinForms application.

    ObservableCollection<T> is primarily used in WPF development. In WinForms, for the control be automatically updates as the collection changes your collection needs to implement IBindingList.

    The easiest solution is to use BindingList<T> instead of ObservableCollection<T>. After that, your controls should update as the collection changes.

    MSDN: BindingList(T) Class

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