Start Validating data types

Validating data types

Two typical cases where an item container is removed are when an item is removed from the underlying collection and when virtualization is enabled on the Items Control.

The source object typically needs the value of the slider only when the slider's Value stops changing.

For more information about grouping data, see How to: Sort and Group Data Using a View in XAML.

For more information about virtualizing grouped data, see the Is Virtualizing When Grouping attached property.

There are cases where the Data Context of an item container in an Items Control becomes disconnected.