Question

Say I have a listbox lb, which I initialize using:

lb.DataSource = wordList \\wordList is a list of strings
lb.DataBind()

The listbox is initialized perfectly, and everything that should appear there does.

However, now I select one of items in the listbox with my mouse (coloring it dark blue, in case anyone wondered what I meant in “select”), and perform the following test:

 If lb.SelectedIndex <> -1 Then
        DoSomething()
 EndIf

or the test:

If Not lb.SelectedItem Is Nothing Then
            DoSomething()
     EndIf

etc..

Either way, when debugging it keeps not entering the if blocks, claiming of course that
lb.selectedindext IS -1, lb.SelectedItem IS nothing, and so on.

What am I doint wrong? Why doesn’t it recognise my selections??
10x

Answer 1

It’s possible that you do the DataBind() of the listBox also in the postback?
Maybe you need to put it (the binding) in a

if (!IsPostback) { .. }

to ensure you’re not losing your client’s select.