Multiple Event Handler : Event « Event « VB.Net Tutorial






Module Module1

    Class DailyJob
        Public Event Coding(ByVal Item As String, ByVal StartTime As DateTime)
        Public Event Testing(ByVal Item As String, ByVal StartTime As DateTime)
        Public Event Meeting(ByVal Item As String, ByVal StartTime As DateTime)

        Public Sub GenerateEvents()
            RaiseEvent Coding("coding", Now())
            RaiseEvent Testing("testing", Now().AddMinutes(5.0))
            RaiseEvent Meeting("meeting", Now.AddMinutes(10.0))
        End Sub
    End Class

    Dim WithEvents ThisDailyJob As New DailyJob()

    Sub DoJob(ByVal Item As String, ByVal StartTime As DateTime)
        Console.WriteLine("Starting " & Item & " at: " & StartTime)
    End Sub

    Sub Main()
        AddHandler ThisDailyJob.Coding, AddressOf DoJob
        AddHandler ThisDailyJob.Testing, AddressOf DoJob
        AddHandler ThisDailyJob.Meeting, AddressOf DoJob

        ThisDailyJob.GenerateEvents()
    End Sub
End Module
Starting coding at: 11/05/2007 9:33:45 PM
Starting testing at: 11/05/2007 9:38:45 PM
Starting meeting at: 11/05/2007 9:43:45 PM








11.1.Event
11.1.1.Raise Events
11.1.2.Multiple Event Handler
11.1.3.Event handler
11.1.4.Subclass EventArgs to create your own event arguments
11.1.5.Inherit Event
11.1.6.Custom event handler
11.1.7.WithEvents and Event method
11.1.8.Add and remove event handlerAdd and remove event handler
11.1.9.Handle events from more than one componentsHandle events from more than one components
11.1.10.Add, remove event handler to/from ToggleButtonAdd, remove event handler to/from ToggleButton
11.1.11.Use one method to handle more than one RadioButton click eventUse one method to handle more than one RadioButton click event
11.1.12.Get event sender typeGet event sender type
11.1.13.Instantiating the Action<(Of <(T>)>) delegate rather than explicitly defining a new delegate and assigning a named method