private void tSBMangamentSale_Click(object sender, EventArgs e)
{
if (CheckExist("frmSell"))
{
XtraMessageBox.Show("Chuc nang nay dang su dung!", "Thong Bao");
return;
}
else
{
frmSell use = new frmSell();
openForm(use);
}
}
private void quảnLýBánHàngToolStripMenuItem_Click(object sender, EventArgs e)
{
if (CheckExist("frmSell"))
{
XtraMessageBox.Show("Chuc nang nay dang su dung!", "Thong Bao");
return;
}
else
{
frmSell use = new frmSell();
openForm(use);
}
}
