CalendarDimensions Property

using Infragistics.Windows.Editors;
using Infragistics.Windows.Controls;

        private void InitializeCalendar(XamMonthCalendar calendar)
        {
            // by default the template of the xammonthcalendar uses a calendaritemgrouppanel
            // which will automatically create groups as needed based on the available size
            // to use a fixed size, you can set AutoAdjustCalendarDimensions to false and 
            // set the CalendarDimensions to the dimensions you want it to always use
            calendar.AutoAdjustCalendarDimensions = false;
            calendar.CalendarDimensions = new CalendarDimensions(2, 2);

            // DisabledDaysOfWeek is a flagged enumeration of the days of the week
            // that should be disabled and therefore disallow activation and selection
            calendar.DisabledDaysOfWeek = DayOfWeekFlags.Saturday | DayOfWeekFlags.Sunday;

            // the default selection type allows for selection of multiple dates
            calendar.SelectionType = SelectionType.Single;

            // the min/max dates control the range of dates that are available
            // for activation/selection. any dates outside this range will not
            // be shown
            calendar.MinDate = new DateTime(2008, 1, 1);
            calendar.MaxDate = new DateTime(2099, 12, 31);

            // by default week numbers are not displayed
            calendar.WeekNumberVisibility = Visibility.Visible;

            // the today button that is used to select the current date
            // can be removed using the TodayButtonVisibility
            calendar.TodayButtonVisibility = Visibility.Collapsed;

            // by default leading and trailing dates (e.g. days before
            // and after the first/last visible month) are displayed
            // within the control
            calendar.ShowLeadingAndTrailingDates = false;
        }