DispatcherTimer.Tick Evento

Definición

Espacio de nombres:

System.Windows.Threading

Ensamblado:

WindowsBase.dll

Se produce cuando ha transcurrido el intervalo del temporizador.

public:
 event EventHandler ^ Tick;

public event EventHandler Tick;

member this.Tick : EventHandler 

Public Custom Event Tick As EventHandler 

Tipo de evento

EventHandler

Ejemplos

En el ejemplo siguiente se crea un Tick controlador de eventos. El controlador de eventos actualiza un Label objeto que muestra el segundo actual y llama a InvalidateRequerySuggested en .CommandManager

//  System.Windows.Threading.DispatcherTimer.Tick handler
//
//  Updates the current seconds display and calls
//  InvalidateRequerySuggested on the CommandManager to force 
//  the Command to raise the CanExecuteChanged event.
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
    // Updating the Label which displays the current second
    lblSeconds.Content = DateTime.Now.Second;

    // Forcing the CommandManager to raise the RequerySuggested event
    CommandManager.InvalidateRequerySuggested();
}

'  System.Windows.Threading.DispatcherTimer.Tick handler
'
'  Updates the current seconds display and calls
'  InvalidateRequerySuggested on the CommandManager to force 
'  the Command to raise the CanExecuteChanged event.
Private Sub dispatcherTimer_Tick(ByVal sender As Object, ByVal e As EventArgs)
    ' Updating the Label which displays the current second
    lblSeconds.Content = Date.Now.Second

    ' Forcing the CommandManager to raise the RequerySuggested event
    CommandManager.InvalidateRequerySuggested()
End Sub