private void btnDoanhThu_ItemClick(object sender, ItemClickEventArgs e)
{
frmDoanhThu f = new frmDoanhThu();
f.MdiParent = this;
f.Show();
}
public static void HienThiDoanhThu()
{
if (m_FrmDoanhThu == null || m_FrmDoanhThu.IsDisposed)
{
m_FrmDoanhThu = new frmDoanhThu();
m_FrmDoanhThu.MdiParent = frmMain.ActiveForm;
m_FrmDoanhThu.Show();
}
else
{
m_FrmDoanhThu.Activate();
}
}