ISelectionService.SelectionChanging Esemény

Definíció

Névtér:

System.ComponentModel.Design

Szerelvény:

System.dll

Akkor fordul elő, ha az aktuális kijelölés módosulni készül.

public:
 event EventHandler ^ SelectionChanging;

event EventHandler SelectionChanging;

member this.SelectionChanging : EventHandler 

Event SelectionChanging As EventHandler 

Eseménytípus

EventHandler

Példák

Az alábbi példa az esemény használatát SelectionChanging mutatja be.

// 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

Megjegyzések

Az esemény kezelésekor minimálisra csökkentheti a feldolgozást, mivel az eseménykezelőn belüli feldolgozás jelentősen befolyásolhatja az űrlaptervező általános teljesítményét.

Lásd még

• SelectionChanged
• EventHandler