Reflection.ViewModelWhenAnyValue(TViewModel?, TView, Expression?) method¶
Defined in
Type: Reflection
Namespace: ReactiveUI.Reactive
Assembly: ReactiveUI.Reactive.dll
Applies to
net10.0, net10.0-maccatalyst26.0, net10.0-desktop1.0, net10.0-browserwasm1.0, net10.0-tvos26.0, net10.0-windows10.0.19041, net10.0-macos26.0, net10.0-ios26.0, net10.0-android36.0, net9.0, net9.0-tvos18.0, net9.0-macos15.0, net9.0-maccatalyst18.0, net9.0-windows10.0.19041, net9.0-ios18.0, net9.0-desktop1.0, net8.0, net8.0-windows10.0.19041, net8.0-ios18.0, net8.0-maccatalyst18.0, net8.0-macos15.0, net8.0-tvos18.0, net8.0-ios17.5, net8.0-maccatalyst17.5, net8.0-macos14.5, netstandard2.1, net481, net462, net471
Attributes: [RequiresUnreferencedCode("Dynamic observation uses reflection over members that may be trimmed.")]
public static IObservable<object> ViewModelWhenAnyValue<TView, TViewModel>(TViewModel? viewModel, TView view, Expression? expression) where TView : class, IViewFor where TViewModel : class
Summary: Creates an observable that switches to observing the provided expression on the current ViewModel.
Type parameters
| Name | Description |
|---|---|
TView | The view type. |
TViewModel | The view model type. |
Parameters
| Name | Type | Description |
|---|---|---|
viewModel | TViewModel? | The current view model (not used directly; preserved for signature compatibility). |
view | TView | The view instance. |
expression | Expression? | The expression to observe dynamically. |
Returns: IObservable -- An observable that emits values produced by the dynamic observation.
Remarks
Trimming note: dynamic observation via expression trees typically requires reflection over members
that may be trimmed; callers should preserve metadata for observed members.