[RESOLVED] Collection help[VB 2003.net]

[heeroyu16]

Hi guys/gals,

Hope you guys can help me on this
I'm trying to remove items from a collection if it has a duplicate from another collection
Do anyone knows how to do this?
I can use arraylist to replace it too
I have a code here which gives me error and i'm stuck on this

Collection A = getSno
Collection B = getnew

I want to check if getSno.item = getnew.items
remove

here's my current code

For b = getNew.Count - 1 To 0 Step -1
                        If getSno.Item(b) = getNew.Item(b) Then
                            getSno.Remove(getNew.Item(b))
                        End If
 
                        msg = Boxno & "," & getSno.Item(b)
                        olddate.Add(msg)
                        pretest codes")
              Next
                    dg1.DataSource = olddate
                    dg1.DataBind()

Thanks for your help guys/gals