Selected index reset on postback

[JAS]

I have a problem with controls on a webform not storing the selected index after a postback.

 

The controls are databound only once ( in createMenu() ) as I use

 

  Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
       'Put user code to initialize the page here
       If Not IsPostBack Then
           CreateMenu()
           InitialiseDates()
           panelParams.Visible = False
       End If
   End Sub

 

The postback is initiated by a click on a button

Private Sub cmdGenerateReport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdGenerateReport.Click
       LoadReport()
       DateSelect()
   End Sub

 

Neither Loadreport() or DateSelect() call a databind

 

The View state for the controls is on

 

it does not seem to matter what list control I use (dropdownlist, radiobuttonlist etc) but the selected index is always reset to 0 after the postback

 

I have seen lots of examples of the same problem in forums and on the web but no one seems to have posted an answer that I can get to work.

 

Can you help?

 

Thanks

 

JAS