// MDI frmTaiKhoan
void MoFormTaiKhoan()
{
Form frm = KiemTraFormTonTai(typeof(frmTaiKhoan));
if (frm != null)
{
frm.Activate();
}
else
{
frmTaiKhoan m_frmHoaDonThanhToan = frmTaiKhoan.Instance;
m_frmHoaDonThanhToan.MdiParent = this;
m_frmHoaDonThanhToan.Dock = DockStyle.Fill;
m_frmHoaDonThanhToan.Show();
}
}
private void frmTaiKhoan_FormClosed(object sender, FormClosedEventArgs e)
{
_Instance = null;
}
