ICollectionView Interface (System.ComponentModel)

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Microsoft Silverlight

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.NET Framework Class Library for Silverlight

ICollectionView Interface

Enables collections to have the functionalities of current record management, custom sorting, filtering, and grouping.

Namespace: System.ComponentModel
Assembly: System.Windows (in System.Windows.dll)

Syntax

Visual Basic (Declaration)

Public Interface ICollectionView _
    Inherits IEnumerable, INotifyCollectionChanged

public interface ICollectionView : IEnumerable, 
    INotifyCollectionChanged

The ICollectionView type exposes the following members.

Properties

	Name	Description
	CanFilter	Gets a value that indicates whether this view supports filtering by way of the Filter property.
	CanGroup	Gets a value that indicates whether this view supports grouping by way of the GroupDescriptions property.
	CanSort	Gets a value that indicates whether this view supports sorting by way of the SortDescriptions property.
	Culture	Gets or sets the cultural information for any operations of the view that may differ by culture, such as sorting.
	CurrentItem	Gets the current item in the view.
	CurrentPosition	Gets the ordinal position of the CurrentItem in the view.
	Filter	Gets or sets a callback that is used to determine whether an item is appropriate for inclusion in the view.
	GroupDescriptions	Gets a collection of GroupDescription objects that describe how the items in the collection are grouped in the view.
	Groups	Gets the top-level groups.
	IsCurrentAfterLast	Gets a value that indicates whether the CurrentItem of the view is beyond the end of the collection.
	IsCurrentBeforeFirst	Gets a value that indicates whether the CurrentItem of the view is beyond the start of the collection.
	IsEmpty	Gets a value that indicates whether the view is empty.
	SortDescriptions	Gets a collection of SortDescription instances that describe how the items in the collection are sorted in the view.
	SourceCollection	Gets the underlying collection.

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Methods

	Name	Description
	Contains	Indicates whether the specified item belongs to this collection view.
	DeferRefresh	Enters a defer cycle that you can use to merge changes to the view and delay automatic refresh.
	GetEnumerator	Returns an enumerator that iterates through a collection. (Inherited from IEnumerable.)
	MoveCurrentTo	Sets the specified item in the view as the CurrentItem.
	MoveCurrentToFirst	Sets the first item in the view as the CurrentItem.
	MoveCurrentToLast	Sets the last item in the view as the CurrentItem.
	MoveCurrentToNext	Sets the item after the CurrentItem in the view as the CurrentItem.
	MoveCurrentToPosition	Sets the item at the specified index to be the CurrentItem in the view.
	MoveCurrentToPrevious	Sets the item before the CurrentItem in the view to the CurrentItem.
	Refresh	Recreates the view.

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Events

	Name	Description
	CollectionChanged	Occurs when the items list of the collection has changed, or the collection is reset. (Inherited from INotifyCollectionChanged.)
	CurrentChanged	Occurs after the current item has been changed.
	CurrentChanging	Occurs before the current item changes.

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Extension Methods

	Name	Description
	AsQueryable	Converts an IEnumerable to an IQueryable. (Defined by Queryable.)
	Cast<(Of <(TResult>)>)	Converts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
	OfType<(Of <(TResult>)>)	Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)

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Remarks

The DataGrid control uses this interface to access the indicated functionality in the data source assigned to its ItemsSource property. If the ItemsSource implements IList, but does not implement ICollectionView, the DataGrid wraps the ItemsSource in an internal ICollectionView implementation.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Reference

System.ComponentModel Namespace

DataGrid

DataGrid..::.ItemsSource

IList