Basic Configuration, Actions and Conventions. Open Visual Studio and create. Cheat Sheet. This serves as a quick guide to the most frequently used. All About Actions. We briefly introduced actions in Pt. 1, but there is so much.

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After installation you need to remove MainWindow.

The version of this pre-relase is 4. The simplest solution is hook up the click event of a button to an event handler in the view model.

Introduction ·

ActiveItem — A property that indicates what item the conductor is currently tracking as active. The Conductor treats deactivation and closing synonymously.

The first thing to notice is that we are using a more Xaml-developer-friendly mechanism for declaring our ActionMessages. On the non-XF platforms this method has re-entry protection, the XF version did not.

Hopefully you can see some of the differences from a Conductor without a collection and understand why those differences are there.

Model attached property in the same way. In the first step, we need to define a property in the view model. Micro strives to go beyond simply getting it done. We need to manualy indicate property in view model Example above. IObservableCollection — Composes the following interfaces: You should now be ready to build your project and check the application has been wired up correctly. Micro wires up your views for you.


ActionMessage is, of course, the Caliburn.

Recall also, that if ActiveItem is already set to an instance, then before the new instance is set, the previous instance will be checked for an implementation of IGuardClose which may or may not cancel switching of the ActiveItem.

If you have a property on your ViewModel with the same name as an element, we will attempt to databind them.

Note this service may change in 4. After initialization is complete, IsInitialized will be true. Screen Collection In an application like Visual Studio, you would not only have a ScreenConductor managing activation, deactivation, etc.

This enables caching of complex views or even complex view resolution logic. As you can see, the Actions feature leverages System. In this application, the ShellViewModel is a Conductor.

Basic Configuration, Actions and Conventions ·

Finally, we changed our CanSayHello property into a method with the same inputs as the action, but with a bool return type. In this step, we create a view for the previously created view model. Override this method to add custom guard logic. Anything that goes through the ViewModelBinder will have its documentayion target set automatically.


Often times a screen has a lifecycle associated with it which allows the screen to perform custom activation caligurn deactivation logic. There are two contextual views for this ViewModel see below. If you are transitioning away from a screen, it makes sure it gets deactivated.

Basic Configuration, Actions and Conventions

As it stands right now Caliburn. This method is designed with an async pattern, allowing complex logic such as async user interaction to take place while making the close decision. The MessageBox will show when the activation occurs, but the view for page two will not yet be visible.

The CI feed is available for Caliburn. These conventions are based on x: Caliburn Micro promotes a View-Model-First approach, so the next step is to add a class to represent the view model.