Caliburn Micro Handling Message in Code Behind

Question

Using Caliburn Micro MVVM, I'm trying to control a ScrollViewer from code behind. I have a button click that is handled in the viewmodel. I also need to call methods on a ScrollViewer, which I believe can only be done from the view.xaml.cs code behind file.
I've tried 2 things. 1) EventHandler 2) Caliburn Micro IHandle

Neither way seems to hit the code behind file.

Here's the code for option 2

ViewModel:

_eventAggregator.PublishOnUIThread(new MyClickMessage(this));

Code-behind (view.xaml.cs) file:

public partial class MyClass: UserControl, IHandle<MyClickMessage> { public MyClass() { InitializeComponent(); } public void Handle(MyClickMessage message) { NOT HITTING HERE } }

Any advice immensely appreciated.

mm8 · Accepted Answer · 2017-12-21 16:02:01Z

It should work provided that you actually subscribe in the view. Try this:

public partial class MyClass : UserControl, IHandle<MyClickMessage> { public MyClass() { InitializeComponent(); IEventAggregator eventAggregator = IoC.Get<IEventAggregator>(); eventAggregator.Subscribe(this); } public void Handle(MyClickMessage message) { //... } }

It works just fine for me.

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