public class PopupControlContainerInfo : BarPopupExpandableInfo<PopupControlContainer>
Public Class PopupControlContainerInfo Inherits BarPopupExpandableInfo(Of PopupControlContainer)
Visual Studio has a design-time issue that may cause an exception in an XAML file when you initialize a property with a PopupControlContainer object. If this is the case, initialize this property with the PopupControlContainerInfo object instead. The PopupControlContainerInfo internally creates a corresponding PopupControlContainer and has the same settings as the PopupControlContainer.