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CollectionView.Count Property

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Definition

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

Gets the number of records in the view.

public:
 virtual property int Count { int get(); };
public virtual int Count { get; }
member this.Count : int
Public Overridable ReadOnly Property Count As Integer

Property Value

Int32

The number of records in the view, or -1 if the number of records is unknown.

Remarks

If a filter is set, this property value only includes items that pass the filter. If the underlying collection is of type IEnumerable, this is an O(N) operation. This value is cached until the collection changes.

Notes to Inheritors

When deriving from CollectionView, override this property to provide a more efficient implementation.

Applies to