private void sảnPhẩmToolStripMenuItem_Click(object sender, EventArgs e)
{
if (Application.OpenForms["frm_ProductManagement"] == null)
{
frm_EditStaff frm = new frm_EditStaff();
frm.MdiParent = this;
frm.Show();
}
else
{
Application.OpenForms["frm_ProductManagement"].Activate();
}
}
private void hóaĐơnNhậpToolStripMenuItem_Click(object sender, EventArgs e)
{
if (Application.OpenForms["frm_BillImport"] == null)
{
frm_EditStaff frm = new frm_EditStaff();
frm.MdiParent = this;
frm.Show();
}
else
{
Application.OpenForms["frm_BillImport"].Activate();
}
}
private void chỉnhSửaToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (Application.OpenForms["frm_EditGoods"] == null)
{
frm_EditStaff frm = new frm_EditStaff();
frm.MdiParent = this;
frm.Show();
}
else
{
Application.OpenForms["frm_EditGoods"].Activate();
}
}