Bridging IEnumerable and IObservable with Dynamic Data

When

Thursday October 22^nd, 2026 @ 5:30 PM

Who

Rodney Littles, II

Where

Beach Walk Coworking

RSVP

You’ve bound a list, updated an item’s property, and watched the UI do nothing. That gap in ObservableCollection<T> is by design: binding a list requires INotifyCollectionChanged — not just INotifyPropertyChanged — and out of the box the two don’t compose. Dynamic Data, created by Roland Pheasant and now a dependency of ReactiveUI, bridges IEnumerable and IObservable by projecting change sets out of your collections. With a SourceCache<T, TKey> or SourceList<T> at the core, you get reactive operators — Filter, Transform, Sort, AutoRefresh, Batch — that can be driven by other observables. Want the list to re-sort every time a picker selection changes? That’s one operator. Want property changes inside list items to trigger a new sort pass? That’s one operator. In this session we’ll demonstrate a few working view models that connect to a data source and pipe changes all the way to the UI — without a single foreach, event handler, or manual ObservableCollection reassignment.

Difficulty: Intermediate — helpful to know C#, MVVM, and Reactive Extensions basics going in.

Food / Drinks

Food and drinks will be provided! Please contact us (on meetup) if you have any dietary restrictions/food allergies.

Directions and Parking Instructions

Meeting will be held at Beach Walk Coworking, 96 Beach Walk Blvd, Conroe, TX 77304 in the ground floor meeting room. Free parking is available on site.