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SelectedDatesCollection Class

Represents a set of selected dates in a Calendar.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)
[<Sealed>]
type SelectedDatesCollection =  
    class 
        inherit ObservableCollection<DateTime>
    end

The SelectedDatesCollection type exposes the following members.

  NameDescription
Public methodSelectedDatesCollectionInitializes a new instance of the SelectedDatesCollection class.
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  NameDescription
Public propertyCountGets the number of elements actually contained in the Collection(T). (Inherited from Collection(T).)
Public propertyItemGets or sets the element at the specified index. (Inherited from Collection(T).)
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  NameDescription
Public methodAddAdds an object to the end of the Collection(T). (Inherited from Collection(T).)
Public methodAddRangeAdds all the dates in the specified range, which includes the first and last dates, to the collection.
Public methodClearRemoves all elements from the Collection(T). (Inherited from Collection(T).)
Public methodContainsDetermines whether an element is in the Collection(T). (Inherited from Collection(T).)
Public methodCopyToCopies the entire Collection(T) to a compatible one-dimensional Array, starting at the specified index of the target array. (Inherited from Collection(T).)
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodGetEnumeratorReturns an enumerator that iterates through the Collection(T). (Inherited from Collection(T).)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIndexOfSearches for the specified object and returns the zero-based index of the first occurrence within the entire Collection(T). (Inherited from Collection(T).)
Public methodInsertInserts an element into the Collection(T) at the specified index. (Inherited from Collection(T).)
Public methodMoveMoves the item at the specified index to a new location in the collection. (Inherited from ObservableCollection(T).)
Public methodRemoveRemoves the first occurrence of a specific object from the Collection(T). (Inherited from Collection(T).)
Public methodRemoveAtRemoves the element at the specified index of the Collection(T). (Inherited from Collection(T).)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Public eventCollectionChangedOccurs when an item is added, removed, changed, moved, or the entire list is refreshed. (Inherited from ObservableCollection(T).)
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  NameDescription
Explicit interface implemetationPrivate methodICollection.CopyToCopies the elements of the ICollection to an Array, starting at a particular Array index. (Inherited from Collection(T).)
Explicit interface implemetationPrivate propertyICollection(T).IsReadOnlyGets a value indicating whether the ICollection(T) is read-only. (Inherited from Collection(T).)
Explicit interface implemetationPrivate propertyICollection.IsSynchronizedGets a value indicating whether access to the ICollection is synchronized (thread safe). (Inherited from Collection(T).)
Explicit interface implemetationPrivate propertyICollection.SyncRootGets an object that can be used to synchronize access to the ICollection. (Inherited from Collection(T).)
Explicit interface implemetationPrivate methodIEnumerable.GetEnumeratorReturns an enumerator that iterates through a collection. (Inherited from Collection(T).)
Explicit interface implemetationPrivate methodIList.AddAdds an item to the IList. (Inherited from Collection(T).)
Explicit interface implemetationPrivate methodIList.ContainsDetermines whether the IList contains a specific value. (Inherited from Collection(T).)
Explicit interface implemetationPrivate methodIList.IndexOfDetermines the index of a specific item in the IList. (Inherited from Collection(T).)
Explicit interface implemetationPrivate methodIList.InsertInserts an item into the IList at the specified index. (Inherited from Collection(T).)
Explicit interface implemetationPrivate propertyIList.IsFixedSizeGets a value indicating whether the IList has a fixed size. (Inherited from Collection(T).)
Explicit interface implemetationPrivate propertyIList.IsReadOnlyGets a value indicating whether the IList is read-only. (Inherited from Collection(T).)
Explicit interface implemetationPrivate propertyIList.ItemGets or sets the element at the specified index. (Inherited from Collection(T).)
Explicit interface implemetationPrivate methodIList.RemoveRemoves the first occurrence of a specific object from the IList. (Inherited from Collection(T).)
Explicit interface implemetationPrivate eventINotifyPropertyChanged.PropertyChangedOccurs when a property value changes. (Inherited from ObservableCollection(T).)
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Dates can be added to the SelectedDates property of a Calendar. Depending on the value of the Calendar.SelectionMode property, adding a date or a range to the SelectedDatesCollection may cause it to be cleared. The following table lists how CalendarSelectionMode affects the SelectedDates property.

CalendarSelectionMode

Effect on SelectedDates

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.

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

No code example is currently available or this language may not be supported.
<!-- 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>

.NET Framework

Supported in: 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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