Public Class Form1

Dim temp As String
Dim vegetable() As String = {"tomato", "carrot", "celery", _
"beet", "parsley", "lettuce", "water-cress", "spinach"}

Dim U As Integer = vegetable.GetUpperBound(0)
Dim L As Integer = vegetable.GetLowerBound(0)
Dim i As Integer


Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAsc.Click
'Dim b As Integer
'Ascending Order
lstOutputA.Items.Clear() 'clear the box every time the box is clicked so it doesn't scroll forever

For i = 0 To 6 'total of 7 times, n-1
    For L = 0 To U 'lower bound is always 0, to upper bound
        If (L + 1) < U Then 'make sure  that we won't get an "out of bound" error. Check here, so it doesn't get a chance to make an error. (Used for checking last time (when L = 8 (when counting from 0))
            If vegetable(L) > vegetable(L + 1) Then 'if the first value is NOT in ascending alphabetical order with the second, do stuff
            temp = vegetable(L) 'the three step switch (Nice ring to it, I came up with that)
            vegetable(L) = vegetable(L + 1)
            vegetable(L + 1) = temp
            End If
        End If
    Next
Next


For i = 0 To U 'display the first (lowerBound (which is 0) to the last UpperBound (which is 7))
    lstOutputA.Items.Add(vegetable(i))
Next

End Sub



Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDesc.Click
'Descending

lstOutputD.Items.Clear() 'clear the box every time the box is clicked so it doesn't scroll forever
For i = 0 To 6 'total of 7 times, n-1
    For L = 0 To U 'lower bound is always 0, to upper bound
        If (L + 1) < U Then 'make sure  that we won't get an "out of bound" error. Check here, so it doesn't get a chance to make an error. (Used for checking last time (when L = 8 (when counting from 0))
            If vegetable(L) < vegetable(L + 1) Then 'if the first value is NOT in descending alphabetical order with the second, do stuff
            temp = vegetable(L) 'the three step switch (Nice ring to it, I came up with that)
            vegetable(L) = vegetable(L + 1)
            vegetable(L + 1) = temp
            End If
        End If
    Next
Next


For i = 0 To U 'display the first (lowerBound (which is 0) to the last UpperBound (which is 7))
    lstOutputD.Items.Add(vegetable(i))
Next
End Sub

End Class