EventArrivedEventArgs-Klasse

Enthält Daten für das EventArrived-Ereignis.

Namespace: System.Management
Assembly: System.Management (in system.management.dll)

Syntax

'Declaration
Public Class EventArrivedEventArgs
    Inherits ManagementEventArgs
'Usage
Dim instance As EventArrivedEventArgs

public class EventArrivedEventArgs : ManagementEventArgs

public ref class EventArrivedEventArgs : public ManagementEventArgs

public class EventArrivedEventArgs extends ManagementEventArgs

public class EventArrivedEventArgs extends ManagementEventArgs

Hinweise

Im folgenden asynchronen Beispiel wird ein WMI-Zeitgeber eingerichtet, um alle 2 Sekunden ein Ereignis auszulösen. Wenn er nicht mehr benötigt wird, wird er dort auch entfernt. Die ManagementEventWatcher-Klasse definiert mehrere .NET Framework-Ereignisse, die ausgelöst werden, wenn WMI-Ereignisse übermittelt werden. Delegaten werden zum Behandeln der eingehenden Daten an diese Ereignisse angefügt.

Imports System
Imports System.Management

' This example shows asynchronous consumption of events.
' In this example you are listening for timer events.
' The first part of the example sets up the timer.

Public Class EventWatcherAsync

    Public Sub New()
        ' Set up a timer to raise events every 1 second
        '=============================================
        Dim timerClass As New ManagementClass( _
            "__IntervalTimerInstruction")
        Dim timer As ManagementObject = _
            timerClass.CreateInstance()
        timer("TimerId") = "Timer1"
        timer("IntervalBetweenEvents") = 1000
        timer.Put()

        ' Set up the event consumer
        '==========================
        ' Create event query to receive timer events
        Dim query As New WqlEventQuery("__TimerEvent", _
            "TimerId=""Timer1""")

        ' Initialize an event watcher and subscribe to 
        ' events that match this query
        Dim watcher As New ManagementEventWatcher(query)

        ' Set up a listener for events
        AddHandler watcher.EventArrived, _
            AddressOf Me.HandleEvent

        ' Start listening
        watcher.Start()

        ' Do something in the meantime
        System.Threading.Thread.Sleep(10000)

        ' Stop listening
        watcher.Stop()

    End Sub

    Private Sub HandleEvent(ByVal sender As Object, _
        ByVal e As EventArrivedEventArgs)

        Console.WriteLine("Event arrived !")
    End Sub

    Public Overloads Shared Function _
            Main(ByVal args() As String) As Integer

        'start the event watcher
        Dim eventWatcher As New EventWatcherAsync

        Return 0

    End Function

End Class

using System;
using System.Management;

// This example shows asynchronous consumption of events.
// In this example you are listening for timer events.
// The first part of the example sets up the timer.
public class EventWatcherAsync 
{
    public EventWatcherAsync()
    {
        // Set up a timer to raise events every 1 second
        //=============================================
        ManagementClass timerClass = 
            new ManagementClass("__IntervalTimerInstruction");
        ManagementObject timer = timerClass.CreateInstance();
        timer["TimerId"] = "Timer1";
        timer["IntervalBetweenEvents"] = 1000;
        timer.Put();

        // Set up the event consumer
        //==========================
        // Create event query to receive timer events
        WqlEventQuery query = 
            new WqlEventQuery("__TimerEvent",
            "TimerId=\"Timer1\"");

        // Initialize an event watcher and 
        // subscribe to timer events 
        ManagementEventWatcher watcher = 
            new ManagementEventWatcher(query);

        // Set up a listener for events
        watcher.EventArrived += 
            new EventArrivedEventHandler(
            this.HandleEvent);

        // Start listening
        watcher.Start();

        // Do something in the meantime
        System.Threading.Thread.Sleep(10000);
      
        // Stop listening
        watcher.Stop();
        
    }


    private void HandleEvent(object sender,
        EventArrivedEventArgs e)   
    {
        Console.WriteLine("Event arrived !");
    }

    public static void Main(string[] args) 
    {
        // start the event watcher
        EventWatcherAsync eventWatcher = new
            EventWatcherAsync();
    }
}

Vererbungshierarchie

System.Object
   System.EventArgs
     System.Management.ManagementEventArgs
      System.Management.EventArrivedEventArgs

Threadsicherheit

Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.

Plattformen

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

EventArrivedEventArgs-Member
System.Management-Namespace