The List Manager Project: When to Ask User if he wants to save

We have a function that ask the user if he wants to save. If he says yes we save, then we return to the calling function whether it is ok to clear.

The user closes the program using the menu item Exit:

   Private Sub mnuExit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ExitToolStripMenuItem.Click
        Dim okToClose As Boolean = Changed
        If Changed Then
            okToClose = AskToSave()
        End If
        If okToClose Then
            End
        End If
    End Sub 'mnuExit_Click

The X in the corner was clicked:

    Private Sub Form1_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        Dim closeApp As Boolean
        If Changed Then
            closeApp = AskToSave()
            If closeApp = False Then
                e.Cancel = True 'Don't close the app!
            End If
        End If
    End Sub 'Form1_FormClosing

See the complete code at this point.
INDEX, Introduction, Build the Menu, Add items to a listbox, Delete items from the listbox, Save: Write the contents of the list box to a file, Open File: Read file and add to list box, Ask the user if he wants to save, When to ask the user if he wants to save, The User closes the program
Next lesson: List Manager application Finishing Touches

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The User closes the program