ISelectionService.SelectionChanging 事件

定義

命名空間:

System.ComponentModel.Design

組件:

System.ComponentModel.TypeConverter.dll

發生於目前的選取將要變更時。

public:
 event EventHandler ^ SelectionChanging;

event EventHandler SelectionChanging;

member this.SelectionChanging : EventHandler 

Event SelectionChanging As EventHandler 

事件類型

EventHandler

範例

下列範例說明如何使用 SelectionChanging 事件。

// Add SelectionChanging event handler to event
m_selectionService->SelectionChanging += gcnew EventHandler( this, &ComponentClass::OnSelectionChanging );

// Add SelectionChanging event handler to event
m_selectionService.SelectionChanging += new EventHandler(OnSelectionChanging);

' Add SelectionChanging event handler to event
AddHandler m_selectionService.SelectionChanging, AddressOf OnSelectionChanging

/* This is the OnSelectionChanging handler method.  This method calls
    OnUserChange to display a message that indicates the name of the
    handler that made the call and the type of the event argument. */
void OnSelectionChanging( Object^ /*sender*/, EventArgs^ args )
{
   OnUserChange( "OnSelectionChanging", args->ToString() );
}

/* This is the OnSelectionChanging handler method.  This method calls
    OnUserChange to display a message that indicates the name of the
    handler that made the call and the type of the event argument. */
private void OnSelectionChanging(object sender, EventArgs args) 
{
    OnUserChange("OnSelectionChanging", args.ToString());
}

' This is the OnSelectionChanging handler method.  This method calls
'   OnUserChange to display a message that indicates the name of the
'   handler that made the call and the type of the event argument. 
 Private Sub OnSelectionChanging(ByVal sender As Object, ByVal args As EventArgs)
    OnUserChange("OnSelectionChanging", args.ToString())
 End Sub

備註

在處理此事件時將處理最小化，因為此事件處理程式中發生的處理可能會大幅影響表單設計工具的整體效能。

另請參閱

• SelectionChanged
• EventHandler