Exemple #1
0
        private void btnDangNhap_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            Form frm = this.CheckExists(typeof(frmDangNhap));

            if (frm != null)
            {
                frm.Activate();
            }
            else
            {
                frmDangNhap f = new frmDangNhap()
                {
                    MdiParent = this, Text = "Đăng nhập"
                };
                f.Show();
            }
        }