i added a login form in the end of my vb 2008 gymnassium project
ie i created it last
the form coding is right but when i execute the project,the list button(the coach,member,supply lists) doesnt work when i change the startup of the project to login_form
it works when the startup in the project properties is Main_form.
what to do?is there some arrangement problem?or startup problem ?or something that im not doing?

I think you should set your start up to Sub Main. Then write a main subroutine that displays your login form modally. When you have validated the user display your first form.