private void btndoctor_Click(object sender, EventArgs e)
        {
            FrmDoctorEntry frm2 = new FrmDoctorEntry();

            frm2.Show();
            this.Hide();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            FrmDoctorEntry frs = new FrmDoctorEntry();

            frs.Show();
            this.Hide();
        }