ListView.OnCacheVirtualItems(CacheVirtualItemsEventArgs) Method

Definition

引发 CacheVirtualItems 事件。Raises the CacheVirtualItems event.

protected:
 virtual void OnCacheVirtualItems(System::Windows::Forms::CacheVirtualItemsEventArgs ^ e);
protected virtual void OnCacheVirtualItems (System.Windows.Forms.CacheVirtualItemsEventArgs e);
abstract member OnCacheVirtualItems : System.Windows.Forms.CacheVirtualItemsEventArgs -> unit
override this.OnCacheVirtualItems : System.Windows.Forms.CacheVirtualItemsEventArgs -> unit
Protected Overridable Sub OnCacheVirtualItems (e As CacheVirtualItemsEventArgs)

Parameters

e
CacheVirtualItemsEventArgs

一个包含事件数据的 CacheVirtualItemsEventArgsA CacheVirtualItemsEventArgs that contains the event data.

Remarks

引发事件时,将通过委托调用事件处理程序。Raising an event invokes the event handler through a delegate. 有关详细信息,请参阅处理和引发事件For more information, see Handling and Raising Events.

OnCacheVirtualItems 方法还允许派生类对事件进行处理而不必附加委托。The OnCacheVirtualItems method also allows derived classes to handle the event without attaching a delegate. 这是在派生类中处理事件的首选技术。This is the preferred technique for handling the event in a derived class.

Notes to Inheritors

在派生类中重写 OnCacheVirtualItems(CacheVirtualItemsEventArgs) 时,一定要调用基类的 OnCacheVirtualItems(CacheVirtualItemsEventArgs) 方法,以便已注册的委托对事件进行接收。When overriding OnCacheVirtualItems(CacheVirtualItemsEventArgs) in a derived class, be sure to call the base class's OnCacheVirtualItems(CacheVirtualItemsEventArgs) method so that registered delegates receive the event.

Applies to