Question

I have 2 windows form, 1 login form and 1 main form. I want to close main form and login form together. How can i do?

I tryed this command;

Form2 ac = new Form2();
ac.Show();
this.Close();

but this closing all forms. I want only close Form1.

Answer 1

If your Main method contains:

  Application.Run(form1);

And you are closing form1, your application closes.

You could “temporary” hide the form1 while displaying the ac. Use ShowDialog, to block your code until the ac form is closed:

   using (Form2 ac = new Form2()) {
     this.Hide();
     if (ac.ShowDialog() == DialogResult.OK) {
       this.Show();
     } else {
      // Exit app
       this.Close();   
     }
   }