Gets or sets whether or not this AccordionControl supports the selected state for its Items.
true, if this AccordionControl supports the selected state for its Items; otherwise, false.
The AllowItemSelection property enables the item selection feature. A selected item is highlighted as specified by the current skin. Only one item can be selected simultaneously throughout the AccordionControl. When an item is selected, the previously selected item is deselected.
An end-user can select an item by clicking it. To select a specific item in code, use the AccordionControl.SelectElement method or AccordionControl.SelectedElement property. The latter allows you to obtain the currently selected item.
Items are elements whose AccordionControlElement.Style properties are set to Item.
Groups (elements whose AccordionControlElement.Style property is set to Group) do not support the selected state.