Control.OnPreRender(EventArgs) Método
Definición
protected:
virtual void OnPreRender(EventArgs ^ e);
protected public:
virtual void OnPreRender(EventArgs ^ e);
protected virtual void OnPreRender (EventArgs e);
protected internal virtual void OnPreRender (EventArgs e);
abstract member OnPreRender : EventArgs -> unit
override this.OnPreRender : EventArgs -> unit
Protected Overridable Sub OnPreRender (e As EventArgs)
Protected Friend Overridable Sub OnPreRender (e As EventArgs)
Parámetros
Objeto EventArgs que contiene los datos del evento.An EventArgs object that contains the event data.
Ejemplos
// Override the OnPreRender method to set _message to
// a default value if it is null.
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
if (_message == null)
_message = "Here is some default text.";
}
' Override the OnPreRender method to set _message to
' a default value if it is null.
Protected Overrides Sub OnPreRender(ByVal e As EventArgs)
MyBase.OnPreRender(e)
If _message Is Nothing Then
_message = "Here is some default text."
End If
End Sub
Comentarios
ASP.NET llama a este método para generar el PreRender evento.ASP.NET calls this method to raise the PreRender event. Si va a desarrollar un control personalizado, puede invalidar este método para proporcionar un procesamiento adicional.If you are developing a custom control, you can override this method in order to provide additional processing. Si invalida este método, llame al método del control base OnPreRender para notificar a los suscriptores al evento.If you override this method, call the base control's OnPreRender method to notify subscribers to the event.