shared member and inheritance : how to ?

shared member and inheritance : how to ?

• Mark Chad

  Shared means they all share the same instance.

  what you want is:

  MustInherit Public class TheBase
  Private Stuff as Something

  Public Sub New
  Stuff = New Something
  End Sub

  Protected Sub DoSomething
  For Each item as Object in Stuff
  . . .
  Next
  End Sub
  End Class

  Public Class1
  Inherits TheBase

  Public Sub New()
  MyBase.New()
  End Sub
  End Class

  Public Class2
  Inherits TheBase

  Public Sub New()
  MyBase.New()
  End Sub
  End Class

  
  
  

• Julius Rastad

  Public MustInherit Class TheBase
      Protected MustOverride ReadOnly Property TheStuff() As Object 
      Public Sub DoSomething()  
          MsgBox(TheStuff.ToString())  
      End Sub
  End Class
   
  Public Class Child1 
      Inherits TheBase 
   
      Shared Somestuff As Object
      Protected Overrides ReadOnly Property TheStuff() As Object 
          Get  
              Return somestuff  
          End Get
      End Property
  End Class 
  
  Public Class Child2 
      Inherits TheBase 
  
      Shared Somestuff As Object
      Protected Overrides ReadOnly Property TheStuff() As Object 
          Get 
              Return somestuff 
          End Get 
      End Property
  End Class

  
  
  

• ffe_bob

  Thanks for your posts.

  That's approximately how I was doing it. I was just wondering if there was an better way to to that.

  
  

• bw_123

  That's not what I want.

  I want child1 instances, like mychild1_1, mychild1_2, mychild2_3 to share the same "stuff" but not the child2 instances, they will have their own shared "stuff".

  
  

• keenan10000

  You will have to define/redefine the stuff on child1 and child2 separetely - anything defined in the base is accessible to it's derived classes.
  
  
• shared member and inheritance : how to ?