private void PhieuXuatTooltip_Click(object sender, EventArgs e)
{
if (frmCTPX == null || frmCTPX.IsDisposed)
{
frmCTPX = new frmRpHoaDon();
frmCTPX.MdiParent = this;
frmCTPX.Show();
}
else
{
frmCTPX.Activate();
}
}
private void btnPrint_Click(object sender, EventArgs e)
{
frmRpHoaDon frmCTPX = new frmRpHoaDon();
frmCTPX.Show();
}