> Hi,
>
>    My Listbox control is a webcontrol and its AutoPostBack property is set
> to True.  When I left-click on an item the event code here executes:
>
>     Private Sub ListBox2_SelectedIndexChanged(ByVal sender As Object, ByVal
> e As System.EventArgs) Handles ListBox2.SelectedIndexChanged
>         If sender.selectedIndex > -1 Then
>             AddUserToDL(sender.selecteditem)
>         End If
>     End Sub
>
>    The problem is the sender.selectedIndex property is never greater than -1
> and the sender.SelectedItem is set to Nothing.  This happens whether the
> control's SelectedMode is set to Single or Multiple and it does not matter
> which of the 100 plus items, or multiple items, is selected.  Does anyone
> know what could cause this?
>
>   I am running Visual Studio 2003 Enterprise on a Windows 2000 Pro SP4
> computer.  The web server is IIS, which is running on my own workstation.
>
> Thank you for your assistance.
>
> Scott Lemen

"l***@starways.net" wrote:

> Instead of sender.SelectedItem, try CType(sender,
> ListBox).SelectedIndex.  SelectedIndex isn't a property of Object, and
> sender is an Object unless you convert it.  If you're using VS.NET, the
> fact that the S in SelectedIndex didn't become capitalized would have
> been a tipoff.
>
> Lisa
>
>
> Scott Lemen wrote:
> > Hi,
> >
> >    My Listbox control is a webcontrol and its AutoPostBack property is set
> > to True.  When I left-click on an item the event code here executes:
> >
> >     Private Sub ListBox2_SelectedIndexChanged(ByVal sender As Object, ByVal
> > e As System.EventArgs) Handles ListBox2.SelectedIndexChanged
> >         If sender.selectedIndex > -1 Then
> >             AddUserToDL(sender.selecteditem)
> >         End If
> >     End Sub
> >
> >    The problem is the sender.selectedIndex property is never greater than -1
> > and the sender.SelectedItem is set to Nothing.  This happens whether the
> > control's SelectedMode is set to Single or Multiple and it does not matter
> > which of the 100 plus items, or multiple items, is selected.  Does anyone
> > know what could cause this?
> >
> >   I am running Visual Studio 2003 Enterprise on a Windows 2000 Pro SP4
> > computer.  The web server is IIS, which is running on my own workstation.
> >
> > Thank you for your assistance.
> >
> > Scott Lemen
>
>

> Lisa,
>
>    Thank you for replying but your solution did not solve the problem.  Even
> when the Event code is changed as shown just below, the
> myListBox.SelectedIndex = -1 and .SelectedItem is Nothing.  Also,
> mySelectedListItemIndex = -1.
>
> Regards,
>
> Scott
>
>     Private Sub ListBox2_SelectedIndexChanged(ByVal sender As Object, ByVal
> e As System.EventArgs) Handles ListBox2.SelectedIndexChanged
>         Dim myListBox As ListBox = CType(sender, ListBox)
>         Dim mySelectedListItemIndex As Integer = myListBox.SelectedIndex
>
>         If mySelectedListItemIndex > -1 Then
>             AddUserToDL(myListBox.Items(mySelectedListItemIndex))
>         End If
>     End Sub
>
>
> "l***@starways.net" wrote:
>
> > Instead of sender.SelectedItem, try CType(sender,
> > ListBox).SelectedIndex.  SelectedIndex isn't a property of Object, and
> > sender is an Object unless you convert it.  If you're using VS.NET, the
> > fact that the S in SelectedIndex didn't become capitalized would have
> > been a tipoff.
> >
> > Lisa
> >
> >
> > Scott Lemen wrote:
> > > Hi,
> > >
> > >    My Listbox control is a webcontrol and its AutoPostBack property is set
> > > to True.  When I left-click on an item the event code here executes:
> > >
> > >     Private Sub ListBox2_SelectedIndexChanged(ByVal sender As Object, ByVal
> > > e As System.EventArgs) Handles ListBox2.SelectedIndexChanged
> > >         If sender.selectedIndex > -1 Then
> > >             AddUserToDL(sender.selecteditem)
> > >         End If
> > >     End Sub
> > >
> > >    The problem is the sender.selectedIndex property is never greater than -1
> > > and the sender.SelectedItem is set to Nothing.  This happens whether the
> > > control's SelectedMode is set to Single or Multiple and it does not matter
> > > which of the 100 plus items, or multiple items, is selected.  Does anyone
> > > know what could cause this?
> > >
> > >   I am running Visual Studio 2003 Enterprise on a Windows 2000 Pro SP4
> > > computer.  The web server is IIS, which is running on my own workstation.
> > >
> > > Thank you for your assistance.
> > >
> > > Scott Lemen
> >
> >