Close Parent form from child form

Question

Hi all
i have a parent form named Loginform after the user enter the right User Name and Password another form opened named Form1,  all i need that when i closed Form1 from the ControlBox (X) the Loginform closed too, How?
Many Thanks.

Vulpes · Accepted Answer

If Loginform is your start up form, then closing it will close the whole application.
Consequently, rather than closing the Loginfrom explicitly, you  might as well call Application.Exit() to close down the whole application.

Mohammed Gamal · Answer

Many Thanks Vulpes
yes i need to close the all forms.
i use Applecation.Exit() in the child form by write it in FormClosed Event