Developers are encouraged to use HasResource when checking whether the Activity has been assigned a Resource or not.
Accessing the Resource before the DataBind method has been called on ScheduleInfo to fill it's ResourcesCollection leads to undefined behavior.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2