Is this a BUG or am I missing summat?

[tailz]

Hi all,

The code below creates a class object that sources events. It then caches the object so on the next request it can retrieve it.

Problem is the event it raises runs multiple times (first time round is fine). For every time its cached and retrieved its like it stores the event again.

If you debug through, you can see that RaiseEvent is only called once, however the event WILL repeat several times. See the debugger window for output.

I _think_ this is all you need. I've cut this down from a very large chunk of code.

Paste all this into a webform called "Test1.aspx", you will need a PlaceHolder called phMain on the form.

Public Class TestClass
 
  Private m_Value As Long
 
  Event TestEvent()
 
  Sub New(ByVal Value As Long)
    m_Value = Value
  End Sub
 
  Public Function PubFunc() As Control
    RaiseEvent TestEvent()
    Return New LiteralControl(CStr(m_Value))
  End Function
 
End Class
 
Public Class Test1
  Inherits System.Web.UI.Page
 
#Region " Web Form Designer Generated Code "
 
  'This call is required by the Web Form Designer.
  <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
 
  End Sub
 
  Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
    'CODEGEN: This method call is required by the Web Form Designer
    'Do not modify it using the code editor.
    InitializeComponent()
  End Sub
  Protected WithEvents phMain As System.Web.UI.WebControls.PlaceHolder
 
#End Region
 
  Protected WithEvents TestObj As TestClass
 
  Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 
    'Retrieve from Cache
    TestObj = CType(HttpContext.Current.Cache("TestObj" & HttpContext.Current.Session.SessionID), TestClass)
    If TestObj Is Nothing Then
      'Not in Cache so create the object
      TestObj = New TestClass(123456)
      'Save the Object in the Cache
      HttpContext.Current.Cache.Insert("TestObj" & HttpContext.Current.Session.SessionID, TestObj)
    End If
 
    'Call a function of the Obj to get HTML output
    phMain.Controls.Add(TestObj.PubFunc)
 
  End Sub
 
  Private Sub TestObj_TestEvent() Handles TestObj.TestEvent
    System.Diagnostics.Debug.Write("Event Running " & Now & vbCrLf)
    Try
      Response.Write("Event Running")
    Catch
      'Response only seems to be available
      'for a single instance of the event?
    Finally
    End Try
  End Sub
 
End Class

[tailz]

I've been working on this for HOURS, the minute I post I solved it.

At the bottom of Page_Load I added........

TestObj = Nothing

......and it all went away. In vb6 I was religious with clearing up objects.... guess I still should be