public static frmOrderInFromERPDB GetSingleton() { if (frm == null || frm.IsDisposed) // if (frm == null) { frm = new frmOrderInFromERPDB(); } return(frm); }
private void tsmiOrderIn_Click_1(object sender, EventArgs e) { frmOrderInFromERPDB frm = frmOrderInFromERPDB.GetSingleton(); frm.MdiParent = this; // frm.ShowDialog(); frm.Show(); frm.Activate(); }