ListView.OnSearchForVirtualItem(SearchForVirtualItemEventArgs) Method

Definition

引发 SearchForVirtualItem 事件。Raises the SearchForVirtualItem event.

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

Parameters

e
SearchForVirtualItemEventArgs

一个包含事件数据的 SearchForVirtualItemEventArgsA SearchForVirtualItemEventArgs 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.

OnSearchForVirtualItem 方法还允许派生类对事件进行处理而不必附加委托。The OnSearchForVirtualItem 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 OnSearchForVirtualItem(SearchForVirtualItemEventArgs) 时,一定要调用基类的 OnSearchForVirtualItem(SearchForVirtualItemEventArgs) 方法,以便已注册的委托对事件进行接收。When overriding OnSearchForVirtualItem(SearchForVirtualItemEventArgs) in a derived class, be sure to call the base class's OnSearchForVirtualItem(SearchForVirtualItemEventArgs) method so that registered delegates receive the event.

Applies to