RefreshEventHandler Delegado

Definición

Representa el método que controla al evento Refreshed que se provoca cuando cambia Type o un componente durante el tiempo de diseño.Represents the method that handles the Refreshed event raised when a Type or component is changed during design time.

public delegate void RefreshEventHandler(RefreshEventArgs ^ e);
public delegate void RefreshEventHandler(RefreshEventArgs e);
type RefreshEventHandler = delegate of RefreshEventArgs -> unit
Public Delegate Sub RefreshEventHandler(e As RefreshEventArgs)

Parámetros

e
RefreshEventArgs

RefreshEventArgs que contiene el componente o Type que ha cambiado.A RefreshEventArgs that contains the component or Type that changed.

Herencia
RefreshEventHandler

Ejemplos

En el ejemplo siguiente se muestra cómo usar RefreshEventHandler un delegado para controlar Refreshed el evento cuando un tipo o componente cambia.The following sample demonstrates how to use a RefreshEventHandler delegate to handle the Refreshed event when a type or component changes. En el código, el OnRefreshed evento controla el evento y muestra el componente que se va a cambiar.In the code, the OnRefreshed event handles the event and displays the component being changed.

En el código se supone TextBox que ya hay un control en el formulario.The code assumes that a TextBox control is already sited on the form.

private:
   void Form1_Load( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      textBox1->Text = "changed";
      System::ComponentModel::TypeDescriptor::Refreshed += gcnew System::ComponentModel::RefreshEventHandler( OnRefresh );
      System::ComponentModel::TypeDescriptor::GetProperties( textBox1 );
      System::ComponentModel::TypeDescriptor::Refresh( textBox1 );
   }

protected:
   static void OnRefresh( System::ComponentModel::RefreshEventArgs^ e )
   {
      Console::WriteLine( e->ComponentChanged );
   }
private void Form1_Load(object sender, System.EventArgs e)
{
    textBox1.Text = "changed";
    System.ComponentModel.TypeDescriptor.Refreshed += new
    System.ComponentModel.RefreshEventHandler(OnRefresh);
    System.ComponentModel.TypeDescriptor.GetProperties(textBox1);
    System.ComponentModel.TypeDescriptor.Refresh(textBox1);
}

protected static void OnRefresh(System.ComponentModel.RefreshEventArgs e)
{
    Console.WriteLine(e.ComponentChanged.ToString());
}
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    TextBox1.Text = "changed"
    AddHandler System.ComponentModel.TypeDescriptor.Refreshed, AddressOf OnRefreshed
    System.ComponentModel.TypeDescriptor.GetProperties(TextBox1)
    System.ComponentModel.TypeDescriptor.Refresh(TextBox1)
End Sub

Private Sub OnRefreshed(ByVal e As System.ComponentModel.RefreshEventArgs)
    Console.WriteLine(e.ComponentChanged.ToString())
End Sub

Comentarios

Cuando se crea un delegado RefreshEventHandler, se identifica el método que controlará el evento.When you create a RefreshEventHandler delegate, you identify the method that will handle the event. Para asociar el evento al controlador, se debe agregar una instancia del delegado al evento.To associate the event with your event handler, add an instance of the delegate to the event. Siempre que se produce el evento, se llama a su controlador, a menos que se quite el delegado.The event handler is called whenever the event occurs, unless you remove the delegate. Para obtener más información sobre los delegados de controladores de eventos, vea controlar y provocar eventos.For more information about event handler delegates, see Handling and Raising Events.

Métodos de extensión

GetMethodInfo(Delegate)

Obtiene un objeto que representa el método representado por el delegado especificado.Gets an object that represents the method represented by the specified delegate.

Se aplica a

Consulte también: