Commits on Sep 26, 2026

1. fix: stop the WinForms hosts relying on WhenAny, and generate them in… …

   … their own namespace (#504)
   
   The [RoutedControlHost] and [ViewModelControlHost] constructors called
   WhenAny, WhenAnyValue and WhenAnyObservable. With ReactiveUI built on
   ReactiveUI.Binding, those calls are dispatched by Binding's generator, which
   cannot see call sites in another generator's output, so constructing a host
   threw "No generated WhenAny dispatch matched this call site".
   
   The hosts now follow their own properties through a nested PropertyObservable
   over their PropertyChanged event, switching to the selected observable on each
   change as WhenAnyObservable does. The events call
   SubscribePropertyChangedEvents and SubscribePropertyChangingEvents on first
   subscription, as ReactiveObject and the [IReactiveObject] generator do; without
   that ReactiveUI never raised them for a host. No generated code now calls an
   API ReactiveUI.Binding has to intercept.
   
   The hosts were also written into `namespace {TargetNamespace}` as-is, so a host
   in the global namespace produced an unnamed namespace and a separate type, and
   a nested host produced a top-level type. They now open the namespace and any
   containing types as the other generators do.

   

   glennawatson authored Sep 26, 2026
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