Will a WPF ListView be populated if its Visibility is set to Collapsed

Question

If I had a really large ListView whose Visiblity were set to Collapsed, would it populate during InitializeComponent() or only if the Visiblity were changed to Visible?

Thanks.

EDIT:

I should have mentioned, in my scenario, the ListView would be populated via bindings. I want to know if there will be a performance hit to having a ListView with a lot of data even if it is never shown.

Answer 1

Yes, it will be populated. Even popups or tool tips are created before they are shown. If this turns out to be an issue you can lazy load the control in code behind when a certain action occurs.

You could use a placeholder like a ContentPresenter

<ContentPresenter x:Name="listHost"/>

and then set the Content property to a new instance of the list control when a certain action happens.

Somewhere in code behind

var listView = new ListView(); 
//set up bindings... populate the listView 
listHost.Content = listView;