Listbox Custom Sorting

[jasydnor]

Hi,

New to the forums and have a question. I've only been developing for about five months now so I apologize if this seems oversimplistic....I am writing a program on an idea I had on a whim. It's based on the fact that a store (Wal-Mart) is laid out in a logical manner and you can shop efficiently if your shopping list is in order. What I have are two listboxes, the left one contains all the items I might buy and as you double click on each item it will place it into the right listbox. What I was needing is a way to custom sort the items as they are added into the right listbox based on a few criteria (location in store and type). Here's the code I originally came up with:

Public Class Form1
 
 
    Private Sub ListBox1_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListBox1.DoubleClick
 
        ListBox2.Items.Add(ListBox1.SelectedItem)
        ListBox1.Items.Remove(ListBox1.SelectedItem)
 
    End Sub
 
 
    Private Sub ListBox2_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListBox2.DoubleClick
 
        ListBox1.Items.Add(ListBox2.SelectedItem)
        ListBox2.Items.Remove(ListBox2.SelectedItem)
 
    End Sub
 
    Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
 
        Dim shopItems As Integer = ListBox2.Items.Count
        Dim items As String = ""
 
        For i As Integer = 0 To shopItems - 1
 
 
            items &= ListBox2.Items.Item(i).ToString & vbCrLf
 
        Next
 
        If Not IO.File.Exists("C:\" & Today.Month & "-" & Today.Day & "-" & Today.Year & ".txt") Then
 
            IO.File.WriteAllText("C:\" & Today.Month & "-" & Today.Day & "-" & Today.Year & ".txt", items)
 
        Else
 
            MsgBox("File already exists!")
 
        End If
 
    End Sub
 
    Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
 
        Me.Close()
 
    End Sub
 
End Class

Now, I've come up with an alternative solution by placing each type of item on a tab with two listboxes each and can then output them into a file based on which listbox group they are in, but my curiousity has been peaked and I was wondering if there is a way to do custom sorting within a listbox.

Here's the other code for the workaround:

Public Class Form2
 
    Private Sub lbFood_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbFood.DoubleClick
 
        lbFoodList.Items.Add(lbFood.SelectedItem)
        lbFood.Items.Remove(lbFood.SelectedItem)
 
    End Sub
 
    Private Sub lbFoodList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbFoodList.DoubleClick
 
        lbFood.Items.Add(lbFoodList.SelectedItem)
        lbFoodList.Items.Remove(lbFoodList.SelectedItem)
 
    End Sub
 
    Private Sub lbToilitries_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbToiletries.DoubleClick
 
        lbToiletriesList.Items.Add(lbToiletries.SelectedItem)
        lbToiletries.Items.Remove(lbToiletries.SelectedItem)
 
    End Sub
 
    Private Sub lbToilitriesList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbToiletriesList.DoubleClick
 
        lbToiletries.Items.Add(lbToiletriesList.SelectedItem)
        lbToiletriesList.Items.Remove(lbToiletriesList.SelectedItem)
 
    End Sub
 
    Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
 
        Dim toiletryItems As Integer = lbToiletriesList.Items.Count
        Dim foodItems As Integer = lbFoodList.Items.Count
        Dim cleaningItems As Integer = lbCleaningList.Items.Count
        Dim miscItems As Integer = lbMiscList.Items.Count
        Dim items As String = ""
 
        items &= "Toiletries (Pharmacy area): " & vbCrLf
 
        For i As Integer = 0 To toiletryItems - 1
 
            items &= lbToiletriesList.Items.Item(i).ToString & vbCrLf
 
        Next
 
        items &= vbCrLf & "Cleaning Items:" & vbCrLf
 
        For i As Integer = 0 To cleaningItems - 1
 
            items &= lbCleaningList.Items(i).ToString & vbCrLf
 
        Next
 
        items &= vbCrLf & "Food: " & vbCrLf
 
        For i As Integer = 0 To foodItems - 1
 
            items &= lbFoodList.Items.Item(i).ToString & vbCrLf
 
        Next
 
        items &= vbCrLf & "Misc Items:" & vbCrLf
 
        For i As Integer = 0 To miscItems - 1
 
            items &= lbMiscList.Items.Item(i).ToString & vbCrLf
 
        Next
 
        If Not IO.Directory.Exists("C:\Documents and Settings\All Users\Desktop\Shopping List") Then
 
            IO.Directory.CreateDirectory("C:\Documents and Settings\All Users\Desktop\Shopping List")
 
        End If
 
        IO.File.WriteAllText("C:\Documents and Settings\All Users\Desktop\Shopping List\" & txtSave.Text & ".txt", items)
 
    End Sub
 
    Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
 
        Me.Close()
 
    End Sub
 
    Private Sub lbCleaning_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbCleaning.DoubleClick
 
        lbCleaningList.Items.Add(lbCleaning.SelectedItem)
        lbCleaning.Items.Remove(lbCleaning.SelectedItem)
 
    End Sub
 
    Private Sub lbCleaningList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbCleaningList.DoubleClick
 
        lbCleaning.Items.Add(lbCleaningList.SelectedItem)
        lbCleaningList.Items.Remove(lbCleaningList.SelectedItem)
 
    End Sub
 
    Private Sub lbMisc_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbMisc.DoubleClick
 
        lbMiscList.Items.Add(lbMisc.SelectedItem)
        lbMisc.Items.Remove(lbMisc.SelectedItem)
 
    End Sub
 
    Private Sub lbMiscList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbMiscList.DoubleClick
 
        lbMisc.Items.Add(lbMiscList.SelectedItem)
        lbMiscList.Items.Remove(lbMiscList.SelectedItem)
 
    End Sub
 
    Private Sub Form2_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
        lbFood.Sorted = True
        lbCleaning.Sorted = True
        lbToiletries.Sorted = True
        lbMisc.Sorted = True
 
    End Sub
End Class

[debasisdas]

Question moved to .NET forum.