public static frmPesagens GetChild(mdiPrincipal parent = null) { if (_childInstance == null) { _childInstance = new frmPesagens(); _childInstance.MdiParent = parent; } return(_childInstance); }
private void btnPesagens_Click(object sender, EventArgs e) { frmPesagens frm = frmPesagens.GetChild(this); frm.Show(); }