Maui View add events

Question

I have now read about 50 posts "about" this and nothing I have read works.

Read MS docs and nothing.

What I am trying to do should be simple. I have a ContentView control and I want to add events to it. I can find no information on how to do this.

Can anyone link to a post that shows how to define it / raise it / and consume it.

Thanks

Answer 1

I normally use MessagingCenter for that purpose. You can Raise a message using

MessagingCenter.Send<VIEWNAME, DATATYPE>(this, "MESSAGE", DATATOSEND);

Then you can subscribe to those messages from whatever class you need using

MessagingCenter.Subscribe<FROMVIEW, Incoming Data Type>(this,"MESSAGE", async (sender, arg) =>
{
ADD LOGIC
});

Answer 2

You can standard Events in a ContentView.

Basic sample usage:

public partial class PickList : ContentView
{
    public event EventHandler<EventArgs> PickListChanged;
}

Then in your code:

private void Gesture_Tap(object sender, TappedEventArgs e)
{         
	PickListChanged.Invoke(sender,e);     
}

Then in your page XAML:

<mycontrols:PickList PickListChanged="Picker_PickListChanged"></mycontrols:PickList>