CollectionView.Count Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
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
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
反馈
https://aka.ms/ContentUserFeedback。
即将发布:在整个 2024 年,我们将逐步淘汰作为内容反馈机制的“GitHub 问题”,并将其取代为新的反馈系统。 有关详细信息,请参阅:提交和查看相关反馈