Remove duplicate from ListBox

[Liam Whan]

Hi All,

I'm sure this is easy to answer but I can not figureit out.

I am getting an OutOfBoundException when I run this loop that loops
through the listbox in question and looks for duplicate values. Could
anyone shed any light on this?


For intListCountF As integer = 0 to frmPlayer.Listbox1.ListCount -1
For intListCountB As Integer = frmPlayer.Listbox1.Listcount -1 to 0
Step -1
if frmplayer.Listbox1.List(intListCountB) =
frmPlayer.Listbox1.List(intListCountF) Then
frmplayer.Listbox1.RemoveRow(intListCountB)
end if
Next
Next

Cheers,
Liam.

[Dale Arends]

Liam Whan <liam...@gmail.com> wrote in news:4fc21f6f$0$1762$c3e8da3
$92d0...@news.astraweb.com:

Because you're reducing the number of rows in the listbox while still
indexing on the original number of rows. At some point you will try to
access a row number that no longer exists in the listbox.


--
Dale M. Arends
dalea...@sbcglobal.net

[Auric__]

You're clearing your list. When intListCountF has the same value as
intListCountB, you're removing the item. Since you will get to *every* value
in the list in both For loops, you will remove *everything*. Eventually
you're left with a list containing zero items.

Try something like this (untested air code):

For intListCountF As Integer = 0 To frmPlayer.Listbox1.ListCount - 2
For intListCountB As Integer = frmPlayer.Listbox1.ListCount - 1 To _
intListCountF + 1 Step -1
If frmplayer.Listbox1.List(intListCountB) = _
frmPlayer.Listbox1.List(intListCountF) Then
frmplayer.Listbox1.RemoveRow(intListCountB)
End If
Next
Next

--
- Can we talk about this next week?
- Just one more thing...
- Is it next week already?!

[Liam Whan]

Of Course!

I'm an idiot! Thanks so much guys.

what I eventually went with was an algorithim that -1 off the row count
every time it removed a row.

Thanks again!

Liam