private void btnXemHD_Click(object sender, EventArgs e)
{
frmHoaDonThanhToan frm = new frmHoaDonThanhToan();
frm.StartPosition = FormStartPosition.CenterScreen;
frm.MaximizeBox = false;
frm.MinimizeBox = false;
frm.ShowDialog();
}
private void btnHoaDon_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
bool _IsActive = false;
foreach (Form form in Application.OpenForms.OfType <Form>().ToList())
{
if (form.GetType() == typeof(frmHoaDonThanhToan))
{
form.Activate();
_IsActive = true;
}
}
if (!_IsActive)
{
frmHoaDonThanhToan frm = new frmHoaDonThanhToan();
frm.MdiParent = this;
frm.Show();
}
}
