wpfmvvmcaliburn.micro

One ViewModel, multiple views


I am having a hard time getting multiple views to work against 1 viewmodel. I have read Naming Convention for Multi-View Support without getting much out of it, and have tried countless things in the process.

Just to take a simple example. Say I have a ViewModel for People residing in ShellViewModel, which basically contains a list of Person-objects. I want to display them in two different ways in my application.

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What is the correct way to name the Views in this case, and how do I display both views in ShellView?


Solution

  • Anders is correct, there are a number of default conventions for Caliburn.Micro, one of them will locate and display <RootNS>.Views.[<ChildNS>].<ViewTypeName> for <RootNS>.ViewModels.[<ChildNS>].<ViewModelTypeName>.

    In your case, for a single View (assuming the classes reside in namespaces derived from the folders):

    <RootNS>.Views.PeopleView would by located and displayed for <RootNS>.ViewModels.PeopleViewModel.

    For multiple views over the same viewmodel, the convention is that views of format <EntityName>.<Context> are displayed for viewmodels of format <EntityName>[<ViewSuffix>]ViewModel:

    From your example, you could create a new folder named People, and inside it, create your views named Grid and List.

    Your namespaces become <RootNS>.Views.People.Grid and <RootNS>.Views.People.List and, should then be located and displayed for <RootNS>.ViewModels.PeopleViewModel.

    You typically then display the Views in something like a ContentControl, choosing the View you want to display by setting the cal:View.Context property. You'll either hard code the name, if the context isn't going to change in that particular control, or bind to a property which describes what state the ViewModel should be displayed as.

    e.g.

    <ContentControl cal:View.Model="{Binding Path=ActiveItem}" 
                    cal:View.Context="List" />
    

    See the Multiple Views over the Same ViewModel section.