How can instances of ClassB catch and respond to Shared Events in ClassA ?

How can instances of ClassB catch and respond to Shared Events in ClassA ?

• D.V.Sridhar

  Just to add some explanations...
  
  The thing if on the constructor of ClassB.
  As the ClassA Event is shared, you just need to add an handler to it. If it fires, any and every handle will catch it.
  
  On the Module1 Sub Main I declare the two classes and set the 'P' property that actually fires the event.
  
  You can add another ReadLine to make the execution stop after the event is fired so you can see the "I catched it!" message:
  
  Sub Main()
  Dim myClassA As New ClassA
  Dim myClassB As New ClassB
  
  Console.ReadLine()
  
  myClassA.P1 = 10
  
  Console.ReadLine()
  End Sub
  
  
  
  
  
  

• Justin-M

  Hi.
  
  As you said "Shared" I assume that you're using VB.net.
  Here's some sample code of a VB Console Project:
  
  Module Module1
  
  Sub Main()
  Dim myClassA As New ClassA
  Dim myClassB As New ClassB
  
  Console.ReadLine()
  
  myClassA.P1 = 10
  End Sub
  
  End Module
  
  Public Class ClassA
  
  Public Shared Event myClassAEvent()
  
  Private _p1 As Integer = 0
  Public Property P1() As Integer
  Get
  Return _p1
  End Get
  Set(ByVal value As Integer)
  _p1 = value
  RaiseEvent myClassAEvent()
  End Set
  End Property
  
  End Class
  
  Public Class ClassB
  
  Public Sub New()
  AddHandler ClassA.myClassAEvent, AddressOf ClassAEventHandler
  End Sub
  
  Public Sub ClassAEventHandler()
  Console.WriteLine("I catched it!")
  End Sub
  
  End Class
  
  
• How can instances of ClassB catch and respond to Shared Events in ClassA ?