'Declaration Public Property ReferenceDate As Nullable(Of Date)
public Nullable<DateTime> ReferenceDate {get; set;}
The reference date is used to determine the dates that are displayed within the reference group. The reference group is the Infragistics.Controls.Editors.Primitives.CalendarItemGroup whose Infragistics.Controls.Editors.Primitives.CalendarItemGroup.ReferenceGroupOffset is zero. By default, the CalendarBase used a Infragistics.Controls.Editors.Primitives.CalendarItemGroupPanel that autogenerates the groups and sets the first created group's ReferenceGroupOffset to 0.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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