Gets a value that indicates whether the UI automation provider requires at least one child element to be selected.
Assembly: System.Windows (in System.Windows.dll)
This property can be dynamic. For example, the initial state of a control might not have any items selected by default, meaning that is false. However, after an item is selected, the control must always have at least one item selected.
An example of a control where it is not possible for no item to be selected is a TabControl.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.