messagebox cancel button closes form

[ident]

Read this last line again posted above.... also System.ComponentModel.CancelEventArgs isn't the same as FormClosingEventArgs .. which is part of the System.Windows.Forms namespace...

Public Class mainWindow
 
    Private Sub mainWindow_FormClosing(ByVal sender As Object,
                                       ByVal e As FormClosingEventArgs) Handles Me.FormClosing
        'e (FormClosingEventArgs)
        e.Cancel = True
    End Sub
 
    Private Sub checkTextBoxes()
        ' FormClosingEventArgs ?????
    End Sub
 
End Class

Oh and dont ever use END to close an application.