/*void HienThiForm(object form)
         * {
         *  this.pnShowForm.Controls.Clear();
         *  (form as Form).TopLevel = false;
         *  this.pnShowForm.Controls.Add((form as Form));
         *  (form as Form).Show();
         *  btnQLThietBi.BackColor = clr;
         * }*/

        /*void LamMoiMauNen(object sender)
         * {
         *  (sender as Button).BackColor = clr;
         *  Control.ControlCollection ctrls = pnMenu.Controls;
         *  foreach (Control c in ctrls)
         *  {
         *      if (c != sender)
         *          (c as Button).BackColor = declr;
         *      else
         *          (c as Button).BackColor = clr;
         *  }
         * }*/

        private void btnQLThietBi_Click(object sender, EventArgs e)
        {
            frmQLThietBi frm;

            if (user.TenUser != "")
            {
                frm = new frmQLThietBi(user);
            }
            else
            {
                frm = new frmQLThietBi();
            }

            frm.Show();
        }
        private void btn_TrangChu_Click(object sender, EventArgs e)
        {
            frmQLThietBi frm = new frmQLThietBi(user);

            frm.Show();
        }