private void Continue_button_Click(object sender, EventArgs e)
 {
     Login_Screen ls = new Login_Screen();
     ls.Show();
     //Main_Menu_Form f1 = new Main_Menu_Form();
     //f1.Show();
     this.Hide();
 }
 private void label1_Click(object sender, EventArgs e)
 {
     Login_Screen ls = new Login_Screen();
     ls.Show();
     this.Close();
 }