[RESOLVED] common dialog box problem

[chxxangie]

If opt_txt.Value = True Then
                CommonDialog1.DialogTitle = "Save Log File"
                CommonDialog1.Flags = cdlOFNHideReadOnly
                CommonDialog1.Filter = "Text Files (*.txt)|*.txt|"
                CommonDialog1.FilterIndex = 1
                CommonDialog1.ShowSave
                file_inidir = "C:\Program Files\FYP System\Log File\" & user_reg.txt_username
                CommonDialog1.InitDir = file_inidir
                If CommonDialog1.FileName = "" Then
                    Timer1.Enabled = False
                    Exit Sub
                Else
                show_dir = CommonDialog1.FileName
                End If
        end if

when i choose the CANCEL button, suppose it do not do anything.....
but it still save the data into a file!!!
so, how to settle this problem?