Hi,

I'm designing a control that inherits ListControl
I was surprised to see that SelectedIndexChanged is part of ListControl. So
why doesn't it implement IPostBackDataHandler?
I added this to my control:

Function LoadPostData(postDataKey As String, postCollection As
NameValueCollection) As Boolean Implements IPostBackDataHandler.LoadPostData

   Dim changed As Boolean
   For i As Integer = 0 To Items.Count - 1
       Dim item As ListItem = Items(i)
       Dim selected As Boolean
       selected = Not postCollection(UniqueID & "_" & item.Value) Is
Nothing
       If selected <> item.Selected Then
              changed = True
       End If
       item.Selected = selected
   Next

  Return changed

 End Function

but now I can't raise any SelectedIndexChanged from
RaisePostDataChangedEvent() as this event belongs to the base class
ListControl and I get a compile error if I try to.

I really don't understand the logic of ListControl: must I check if values
have changed between posts myself or does ListControl do it by itself? So if
ListControl do it itself, what is a class that inherits ListControl supposed
to do when implementing IPostBackDataHandler?

Can you help me?
Thanks

Henri