Listbox and postback

[The Zakman]

Please help me with a listbox and postback issue that has me baffled. I am
storing my database connection strings in my web.config. At page_load, the
db strings that are currently stored in the file are displayed in a listbox.
This works as expected. Upon selection of a listbox item, the server name
and connection string are to be retrieved and placed into two textboxes for
edit or deletion. This is where my problem begins. The
SelectedIndex_C hanged event begins its process. However, after the page_load
method ends the code stops executing. The next batch of code that should
run, the code in the SelectedIndex_C hanged event, is not executed. I can see
this using breakpoints. The relevant code:

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
If Not IsPostBack Then
FillServerList( )
lboServerList.S electedIndex = -1
End If
End Sub
Public Sub FillServerList( )
Dim myServer As New DBServer
Dim sc As DBServerCollect ion
sc = GetServers()
For Each myServer In sc
Dim tNode As XmlNode
tNode = myServer.Server String
Dim nAttr As XmlAttribute
nAttr = tNode.Attribute s("ServerName ")
lboServerList.I tems.Add(DBStrD ecrypt(nAttr.In nerXml))
Next
End Sub
Private Sub lboServerList_S electedIndexCha nged(ByVal sender As
System.Object, ByVal e As System.EventArg s) Handles
lboServerList.S electedIndexCha nged
Get the servers collection again.
Find the server based upon the selected index.
decrypt the selected server's name and connection string.
put the results in the text boxes and in session variables to be used later.
do some housekeeping.
End Sub
Please note that I am able to add a new server and the application
functions as it should. That is, the server data entered is encrypted and
stored in the web.config file and the listbox is updated with the new server
name. It’s only selection of a listbox item, causing a SelectedIndex_C hanged
event, that causes a problem.

Note also that the code for this web form is part is part of a web user
control. This control is then put into a placeholder when the page is built
at runtime. Your expert advice would be appreciated.

mark[No_Spam]pe*****@yahoo.c om

-Mark