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Calendar.SelectedDates Property

  • Reference

Definition

Namespace:
System.Windows.Controls
Assembly:
PresentationFramework.dll

Gets a collection of selected dates.

public:
 property System::Windows::Controls::SelectedDatesCollection ^ SelectedDates { System::Windows::Controls::SelectedDatesCollection ^ get(); };
public System.Windows.Controls.SelectedDatesCollection SelectedDates { get; }
member this.SelectedDates : System.Windows.Controls.SelectedDatesCollection
Public ReadOnly Property SelectedDates As SelectedDatesCollection

Property Value

SelectedDatesCollection

A SelectedDatesCollection object that contains the currently selected dates. The default is an empty collection.

Examples

The following example creates a Calendar that has multiple ranges of dates selected.

  // Create a Calendar that displays dates through
  // Januarary 31, 2009 and has dates that are not selectable.
  Calendar calendarWithBlackoutDates = new Calendar();
  calendarWithBlackoutDates.IsTodayHighlighted = false;
  calendarWithBlackoutDates.DisplayDate = new DateTime(2009, 1, 1);
  calendarWithBlackoutDates.DisplayDateEnd = new DateTime(2009, 1, 31);
  calendarWithBlackoutDates.SelectionMode = CalendarSelectionMode.MultipleRange;

  // Add the dates that are not selectable.
  calendarWithBlackoutDates.BlackoutDates.Add(
      new CalendarDateRange(new DateTime(2009, 1, 2), new DateTime(2009, 1, 4)));
  calendarWithBlackoutDates.BlackoutDates.Add(
      new CalendarDateRange(new DateTime(2009, 1, 9)));
  calendarWithBlackoutDates.BlackoutDates.Add(
      new CalendarDateRange(new DateTime(2009, 1, 16)));
  calendarWithBlackoutDates.BlackoutDates.Add(
      new CalendarDateRange(new DateTime(2009, 1, 23), new DateTime(2009, 1, 25)));
  calendarWithBlackoutDates.BlackoutDates.Add(
      new CalendarDateRange(new DateTime(2009, 1, 30)));

  // Add the selected dates.
  calendarWithBlackoutDates.SelectedDates.Add(
      new DateTime(2009, 1, 5));
  calendarWithBlackoutDates.SelectedDates.AddRange(
      new DateTime(2009, 1, 12), new DateTime(2009, 1, 15));
  calendarWithBlackoutDates.SelectedDates.Add(
      new DateTime(2009, 1, 27));

  // root is a Panel that is defined elswhere.
  root.Children.Add(calendarWithBlackoutDates);

' Create a Calendar that displays dates through 
' Januarary 31, 2009 and has dates that are not selectable. 
Dim calendarWithBlackoutDates As New Calendar()
calendarWithBlackoutDates.IsTodayHighlighted = False
calendarWithBlackoutDates.DisplayDate = New DateTime(2009, 1, 1)
calendarWithBlackoutDates.DisplayDateEnd = New DateTime(2009, 1, 31)
calendarWithBlackoutDates.SelectionMode = CalendarSelectionMode.MultipleRange

' Add the dates that are not selectable. 
calendarWithBlackoutDates.BlackoutDates.Add(New CalendarDateRange(New DateTime(2009, 1, 2), New DateTime(2009, 1, 4)))
calendarWithBlackoutDates.BlackoutDates.Add(New CalendarDateRange(New DateTime(2009, 1, 9)))
calendarWithBlackoutDates.BlackoutDates.Add(New CalendarDateRange(New DateTime(2009, 1, 16)))
calendarWithBlackoutDates.BlackoutDates.Add(New CalendarDateRange(New DateTime(2009, 1, 23), New DateTime(2009, 1, 25)))
calendarWithBlackoutDates.BlackoutDates.Add(New CalendarDateRange(New DateTime(2009, 1, 30)))

' Add the selected dates. 
calendarWithBlackoutDates.SelectedDates.Add(New DateTime(2009, 1, 5))
calendarWithBlackoutDates.SelectedDates.AddRange(New DateTime(2009, 1, 12), New DateTime(2009, 1, 15))
calendarWithBlackoutDates.SelectedDates.Add(New DateTime(2009, 1, 27))

' root is a Panel that is defined elswhere. 
root.Children.Add(calendarWithBlackoutDates)

<!-- Create a Calendar that displays dates through
     Januarary 31, 2009 and has dates that are not selectable. -->
<Calendar Margin="20" SelectionMode="MultipleRange"  
          IsTodayHighlighted="false" 
          DisplayDate="1/1/2009"
          DisplayDateEnd="1/31/2009"
          xmlns:sys="clr-namespace:System;assembly=mscorlib">

  <Calendar.BlackoutDates>
    <CalendarDateRange Start="1/2/2009" End="1/4/2009"/>
    <CalendarDateRange Start="1/9/2009" End="1/9/2009"/>
    <CalendarDateRange Start="1/16/2009" End="1/16/2009"/>
    <CalendarDateRange Start="1/23/2009" End="1/25/2009"/>
    <CalendarDateRange Start="1/30/2009" End="1/30/2009"/>
  </Calendar.BlackoutDates>

  <Calendar.SelectedDates>
    <sys:DateTime>1/5/2009</sys:DateTime>
    <sys:DateTime>1/12/2009</sys:DateTime>
    <sys:DateTime>1/14/2009</sys:DateTime>
    <sys:DateTime>1/13/2009</sys:DateTime>
    <sys:DateTime>1/15/2009</sys:DateTime>
    <sys:DateTime>1/27/2009</sys:DateTime>
    <sys:DateTime>4/2/2009</sys:DateTime>
  </Calendar.SelectedDates>
</Calendar>

Remarks

Dates can be added to the collection either individually or in a range using the AddRange method. Depending on the value of the SelectionMode property, adding a date or range to the collection may cause it to be cleared. The following table lists how CalendarSelectionMode affects the SelectedDates property.

CalendarSelectionMode Description
None No selections are allowed. SelectedDate cannot be set and no values can be added to SelectedDates.
SingleDate Only a single date can be selected, either by setting SelectedDate or the first value in SelectedDates. AddRange cannot be used.
SingleRange A single range of dates can be selected. Setting SelectedDate, adding a date individually to SelectedDates, or using AddRange will clear all previous values from SelectedDates.
MultipleRange Multiple non-contiguous ranges of dates can be selected. Adding a date individually to SelectedDates or using AddRange will not clear SelectedDates. Setting SelectedDate will still clear SelectedDates, but additional dates or ranges can then be added. Adding a range that includes some dates that are already selected or overlaps with another range results in the union of the ranges and does not cause an exception.

XAML Property Element Usage

<object>
  <object.SelectedDates>
    oneOrMoreDateTimeObjects
  </object.SelectedDates>
</object>

XAML Values

oneOrMoreDateTimeObjects One or more DateTime object elements.

Applies to