I have just come across this very annoying problem myself. Did you find an easy solution to it?

My code is like this.. it say check box checked is false.

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Protected Sub CheckNow(ByVal sender As Object, ByVal e As System.EventArgs) Handles button2.Click
recipient_list.Text = ""
Dim I As Long
For I = 0 To friends.Items.Count - 1
Dim CurrentCheckBox As CheckBox
CurrentCheckBox = friends.Items(I).FindControl("ChkSelect")
'recipient_list.Text & = friends.Items(I).ItemIndex & CurrentCheckBox.text.ToString() & "-" & CurrentCheckBox.checked.ToString() & "<br>"
recipient_list.Text & = CurrentCheckBox.text.ToString() & "-" & CurrentCheckBox.Checked.ToString()

Next
End Sub

Hey, that was interesting,

I had the same problem but couldn't figure out the problem. but with the diplay none everthing is solved.

Thanks for writing about it