selectedindex value not being updated

[bill yeager]

I have a listbox whose autopostback property is set
to 'true'. When this event fires, I have code in
the 'SelectedIndexChanged' event to capture the
selectedindex of the listbox to be reset on the listbox
when the postback occurs. However, the selectedindex
property is alway -1.

Below is the code prior to selecting an item for this
listbox. Right after I select an item, the following code
executes, which I'm expecting, but
the "lstRider.SelectedIndex" value is -1, and I don't know
why.......
<code>
Private Sub lstRider_SelectedIndexChanged(ByVal sender As
Object, ByVal e As System.EventArgs) Handles
lstRider.SelectedIndexChanged

viewstate.Item("Rider1Idx") =
lstRider.Items.Item(lstRider.SelectedIndex).Value( )

End Sub
</code>

Can anybody inform me how I can capture the index of the
selected item in the list???

[carlos medina]

maybe you are binding the listbox each time that the page is loaded.... you
can control it using Page.IsPostBack..

If Not Page.IsPostBack Then
BindListBox()
End If

public sub BindListBox()
' code to bind the listbox
end sub

"bill yeager" <ws********@msn.com> wrote in message
news:08****************************@phx.gbl...

I have a listbox whose autopostback property is set
to 'true'. When this event fires, I have code in
the 'SelectedIndexChanged' event to capture the
selectedindex of the listbox to be reset on the listbox
when the postback occurs. However, the selectedindex
property is alway -1.

Below is the code prior to selecting an item for this
listbox. Right after I select an item, the following code
executes, which I'm expecting, but
the "lstRider.SelectedIndex" value is -1, and I don't know
why.......
<code>
Private Sub lstRider_SelectedIndexChanged(ByVal sender As
Object, ByVal e As System.EventArgs) Handles
lstRider.SelectedIndexChanged

viewstate.Item("Rider1Idx") =
lstRider.Items.Item(lstRider.SelectedIndex).Value( )

End Sub
</code>

Can anybody inform me how I can capture the index of the
selected item in the list???