RoutingState class¶

Attributes: [DataContract] [DebuggerDisplay("NavigationStack Count = {NavigationStack.Count}")]

Summary¶

View source

RoutingState manages the ViewModel Stack and allows ViewModels to navigate to other ViewModels.

classDiagram
class RoutingState
class ReactiveObject
ReactiveObject <|-- RoutingState

Inherits from: ReactiveObject

Remarks¶

Use RoutingState from an IScreen implementation to coordinate navigation in multi-page applications. The stack works in a last-in-first-out fashion, enabling forward navigation via Navigate and back navigation via NavigateBack.

Every navigation notification is a plain observable of values: CurrentViewModel reports the view model on top of the stack, NavigationStackChanged reports the whole stack after each change, and CanNavigateBack reports whether there is a view model to go back to.

Examples¶

<![CDATA[
 public class ShellViewModel : ReactiveObject, IScreen
 {
 public RoutingState Router { get; } = new();
 
 public ShellViewModel()
 {
 Router.Navigate.Execute(new HomeViewModel(this)).Subscribe();
 }
 
 public void ShowDetails() =>
 Router.Navigate.Execute(new DetailsViewModel(this)).Subscribe();
 
 public void GoBack() =>
 Router.NavigateBack.Execute(Unit.Default).Subscribe();
 }
 
 public partial class ShellView : ReactiveUserControl<ShellViewModel>
 {
 public ShellView()
 {
 this.WhenActivated(disposables =>
 ViewModel!.Router.CurrentViewModel
 .Subscribe(viewModel => contentHost.NavigateTo(viewModel))
 .DisposeWith(disposables));
 }
 }
 ]]>

Constructors¶

Properties¶

Extension members¶

• RoutingStateMixins.FindViewModelInStack
• RoutingStateMixins.GetCurrentViewModel
• RoutingStateDynamicDataMixins.NavigationChanged