public Form1()
        {
            InitializeComponent();
            loginscreen ls = new loginscreen();

            ls.ShowDialog();
        }
        int Hh, Ss, Mm; // for Timer
        public Form1(bool flip)
        {
            InitializeComponent();
            profile2.Visible     = false;
            feedback1.Visible    = false;
            history1.Visible     = false;
            bestsell1.Visible    = false;
            search1.Visible      = false;
            favorite1.Visible    = false;
            collections1.Visible = false;
            home1.Visible        = true;

            if (!flip)
            {
                loginscreen ls = new loginscreen();
                ls.ShowDialog();
            }
        }