[RESOLVED] Remove Items Read from file, from ListBox

Hello, me again...

OK, straight to the point.

I write folder names to a file like this :

Code:

---

    Private Sub WriteExcludeFolders()
        Dim SelFolders(clbExclude.CheckedItems.Count - 1) As String

        Dim i As Integer


        For i = 0 To clbExclude.CheckedItems.Count - 1
            SelFolders(i) = clbExclude.CheckedItems(i)

        Next i

        If File.Exists(Application.StartupPath & "ExcludedFolders.txt") Then
            File.Delete(Application.StartupPath & "ExcludedFolders.txt")
        End If

        srFile = New IO.StreamWriter("ExcludedFolders.txt")

        For i = 0 To SelFolders.Length - 1
            srFile.WriteLine(WallDir & "\" & SelFolders(i))

        Next

        srFile.Close()
    End Sub

---

As you can see, it is folders I'd like to exclude from file searches.

Now, when my program launches, I do this :

Code:

---

    Private Function ReadExcludeFolds(ByVal filePath As String) As String()

        Dim sr As System.IO.StreamReader
        Try
            sr = New System.IO.StreamReader(filePath)
            Return System.Text.RegularExpressions.Regex.Split(sr.ReadToEnd, "\r\n")
        Finally
            If Not sr Is Nothing Then sr.Close()
        End Try


    End Function

    Private Sub LoadExcludeFolds()
        Try
            ExcludeLines = ReadExcludeFolds("ExcludedFolders.txt")
            Dim ExcludeLine As String
            Dim ItemsFound As String
            Dim ItemCount As Integer = lstFound.Items.Count '- 1
            Dim I As Integer


            For I = 0 To ItemCount - 1
                For Each ExcludeLine In ExcludeLines
                    ItemCount -= 1 ' lstFound.Items.Count - 1
                    If I >= ItemCount Then Exit For

                    ItemsFound = lstFound.Items(I).ToString().Substring(0, lstFound.Items(I).ToString().LastIndexOf("\"))
                    If ExcludeLine.Equals(ItemsFound) Then


                        lstFound.Items.RemoveAt(I)
                                              NumFiles -= 1
                     
                        lblNumFiles.Text = NumFiles.ToString() & " Items In Repository"
                                          End If
                            Next
            Next I


        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try

    End Sub

---

What is supposed to happen is:
My program launches, I call the LoadExcludeFolds sub. This should read the contents of the textfile, and if it finds a folder listed in it, in the listbox, it should remove that item.

This only removes a few items.

So, say I have this in my text file :

Code:

---

C:\Testing\Images\Cars

---

And i have this in my listbox

Code:

---

C:\Testing\Images\Cars\BMW.jpg
C:\Testing\Images\Cars\Mercedes.jpg
C:\Testing\Images\Cars\Audi.jpg
C:\Testing\Images\Cars\Mazda.jpg

---

It will only remove BMW and Mercedes.

Any advice, any other way of doing this??

Just do what jmc said.

Never thought of using Generics :blush:

Thanx sir, let me see if i can fix this issue once and for all :)

Wait, Generics cannot be used with VS 2003. I think.

If you want to remove items from a list in a For loop you have to count backwards. If you count forwards then every time you remove an item you will skip the next one because all the indexes are decremented by 1.

So, you're saying I must do this :

Code:

---

For I =  ItemCount - 1 to 0

---

I'm stupid, so maybe I don't understand you correctly :)

Quote:

---

Originally Posted by GrimmReaper

So, you're saying I must do this :

Code:

---

For I =  ItemCount - 1 to 0

---

I'm stupid, so maybe I don't understand you correctly :)

---

What happened when you tested it?

Yes! Yes! Yes! Yes! Yes! Hoot hoot!

I did this :

Code:

---

  For I = (ItemCount - 1) To 0 Step -1

---

And it worked!!

Wow, such a small thing!

Thank you thank you thank you!

I wish I was as clever as you!