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c#listviewbindingxamarin.formsdatatemplate

Xamarin - An Alternative for ParentView which is now obsolete

I am creating a custom DataTemplate that trigger an event in it's parent listview. Here is one trigger:

public void OnItemActivated()
{
    ParentView.OnItemActivated(this);
}

'Element.ParentView' is obsolete: 'ParentView is obsolete as of version 2.1.0. Please use Parent instead. - Says Xamarin

Class types

In the above image you can see that Parent and ParentView are diferents and ParentView return the object I need. I would try to use Parent.Parent which work in this case ... Will that always work ? Will that hierarchical structure be always the same ?

So I need the best way to get the listview that own the "active" item

Perhaps someone could advice me if the listview should be listening to his children or should wait for them to talk to him

Solution

  • I finally understood why ParentView is obsolete. The Xamarin page "Document Structure" is not just made by Views, but Elements.

    As a parent of a view may not be a view, ParentView become useless.

    My Solution

    I use (this.Parent as Xamarin.Forms.View) to get my ParentView, my Parent as View :)

    Note

    As I said Parent is an Element which sometime is View. So my solution will crash when the Parent is not a View (Why ParentView is Obsolete)