private void MenuPOTrading_Click(object sender, EventArgs e) { FrmPoTradingComanyPO frm = FrmPoTradingComanyPO.GetSingleton(); frm.MdiParent = this; frm.Show(); frm.Activate(); }
public static FrmPoTradingComanyPO GetSingleton() { if (frm == null || frm.IsDisposed) { frm = new FrmPoTradingComanyPO(); } return(frm); }