title: How to disable main form when another form is open in vb
body: <p>I'm working on my project in VB. Can anyone help me how to disable my main(not close) form when I open my login form? </p>
  
  <p>Like when I click on the login button the login form will appear and the main form will just stay in background and it cannot be closed or moved unless the login form will be closed?</p>