public static void HienThiKhachHang()
{
if (m_FrmKhachHang == null || m_FrmKhachHang.IsDisposed)
{
m_FrmKhachHang = new frmKhachHang();
m_FrmKhachHang.MdiParent = frmMain.ActiveForm;
m_FrmKhachHang.Show();
}
else
{
m_FrmKhachHang.Activate();
}
}
private void btnKhachHang_Click(object sender, EventArgs e)
{
if (fKhach == null || fKhach.IsDisposed)
{
fKhach = new frmKhachHang();
fKhach.MdiParent = this;
fKhach.Show();
}
else
{
fKhach.Activate();
}
}
