'Declaration Public Property SelectionType As CalendarSelectionType
public CalendarSelectionType SelectionType {get; set;}
If that property is set to Week or Multi and the EnableWeekNumbers is enabled, then mouse click on week number will select all days in week.
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