Timer.Stop Método

Definición

Detiene el temporizador.Stops the timer.

public:
 void Stop();
public void Stop ();
member this.Stop : unit -> unit
Public Sub Stop ()

Ejemplos

En el ejemplo de código siguiente se implementa un temporizador de intervalo simple, que establece una alarma cada cinco segundos.The following code example implements a simple interval timer, which sets off an alarm every five seconds. Cuando se produce la alarma, MessageBox muestra un recuento del número de veces que se ha iniciado la alarma y pregunta al usuario si el temporizador debe continuar ejecutándose.When the alarm occurs, a MessageBox displays a count of the number of times the alarm has started and prompts the user whether the timer should continue to run.

public ref class Class1
{
private:
   static System::Windows::Forms::Timer^ myTimer = gcnew System::Windows::Forms::Timer;
   static int alarmCounter = 1;
   static bool exitFlag = false;

   // This is the method to run when the timer is raised.
   static void TimerEventProcessor( Object^ /*myObject*/, EventArgs^ /*myEventArgs*/ )
   {
      myTimer->Stop();
      
      // Displays a message box asking whether to continue running the timer.
      if ( MessageBox::Show( "Continue running?", String::Format( "Count is: {0}", alarmCounter ), MessageBoxButtons::YesNo ) == DialogResult::Yes )
      {
         
         // Restarts the timer and increments the counter.
         alarmCounter += 1;
         myTimer->Enabled = true;
      }
      else
      {
         
         // Stops the timer.
         exitFlag = true;
      }
   }


public:
   static void Main()
   {
      
      /* Adds the event and the event handler for the method that will 
                process the timer event to the timer. */
      myTimer->Tick += gcnew EventHandler( TimerEventProcessor );
      
      // Sets the timer interval to 5 seconds.
      myTimer->Interval = 5000;
      myTimer->Start();
      
      // Runs the timer, and raises the event.
      while ( exitFlag == false )
      {
         
         // Processes all the events in the queue.
         Application::DoEvents();
      }
   }

};

int main()
{
   Class1::Main();
}

public class Class1 {
    static System.Windows.Forms.Timer myTimer = new System.Windows.Forms.Timer();
    static int alarmCounter = 1;
    static bool exitFlag = false;
 
    // This is the method to run when the timer is raised.
    private static void TimerEventProcessor(Object myObject,
                                            EventArgs myEventArgs) {
       myTimer.Stop();
 
       // Displays a message box asking whether to continue running the timer.
       if(MessageBox.Show("Continue running?", "Count is: " + alarmCounter, 
          MessageBoxButtons.YesNo) == DialogResult.Yes) {
          // Restarts the timer and increments the counter.
          alarmCounter +=1;
          myTimer.Enabled = true;
       }
       else {
          // Stops the timer.
          exitFlag = true;
       }
    }
 
    public static int Main() {
       /* Adds the event and the event handler for the method that will 
          process the timer event to the timer. */
       myTimer.Tick += new EventHandler(TimerEventProcessor);
 
       // Sets the timer interval to 5 seconds.
       myTimer.Interval = 5000;
       myTimer.Start();
 
       // Runs the timer, and raises the event.
       while(exitFlag == false) {
          // Processes all the events in the queue.
          Application.DoEvents();
       }
    return 0;
    }
 }
    
Public Class Class1
    Private Shared WithEvents myTimer As New System.Windows.Forms.Timer()
    Private Shared alarmCounter As Integer = 1
    Private Shared exitFlag As Boolean = False    
    
    ' This is the method to run when the timer is raised.
    Private Shared Sub TimerEventProcessor(myObject As Object, _
                                           ByVal myEventArgs As EventArgs) _
                                       Handles myTimer.Tick
        myTimer.Stop()
        
        ' Displays a message box asking whether to continue running the timer.
        If MessageBox.Show("Continue running?", "Count is: " & alarmCounter, _
                            MessageBoxButtons.YesNo) = DialogResult.Yes Then
            ' Restarts the timer and increments the counter.
            alarmCounter += 1
            myTimer.Enabled = True
        Else
            ' Stops the timer.
            exitFlag = True
        End If
    End Sub
    
    Public Shared Sub Main()
        ' Adds the event and the event handler for the method that will
        ' process the timer event to the timer.
        
        ' Sets the timer interval to 5 seconds.
        myTimer.Interval = 5000
        myTimer.Start()
        
        ' Runs the timer, and raises the event.
        While exitFlag = False
            ' Processes all the events in the queue.
            Application.DoEvents()
        End While

    End Sub    

End Class

Comentarios

También puede detener el temporizador estableciendo la Enabled propiedad en false .You can also stop the timer by setting the Enabled property to false. Un Timer objeto se puede habilitar y deshabilitar varias veces dentro de la misma sesión de aplicación.A Timer object may be enabled and disabled multiple times within the same application session.

Llamar a Start después de haber deshabilitado una Timer llamada a hará que Stop Timer reinicie el intervalo interrumpido.Calling Start after you have disabled a Timer by calling Stop will cause the Timer to restart the interrupted interval. Si Timer se establece para un intervalo de 5000 milisegundos y se llama a Stop aproximadamente 3000 milisegundos, la llamada Start a hará que Timer espere 5000 milisegundos antes de generar el Tick evento.If your Timer is set for a 5000-millisecond interval, and you call Stop at around 3000 milliseconds, calling Start will cause the Timer to wait 5000 milliseconds before raising the Tick event.

Nota

La llamada a Stop en cualquier parte Timer de una aplicación Windows Forms puede hacer que los mensajes de otros Timer componentes de la aplicación se procesen inmediatamente, porque todos los Timer componentes operan en el subproceso principal de la aplicación.Calling Stop on any Timer within a Windows Forms application can cause messages from other Timer components in the application to be processed immediately, because all Timer components operate on the main application thread. Si tiene dos Timer componentes, uno establecido en 700 milisegundos y otro establecido en 500 milisegundos y llama a Stop en el primero Timer , la aplicación puede recibir primero una devolución de llamada de evento para el segundo componente.If you have two Timer components, one set to 700 milliseconds and one set to 500 milliseconds, and you call Stop on the first Timer, your application may receive an event callback for the second component first. Si esto demuestra problemas, considere la posibilidad Timer de usar la clase en el System.Threading espacio de nombres en su lugar.If this proves problematic, consider using the Timer class in the System.Threading namespace instead.

Se aplica a

Consulte también