private void OpenFile(object sender, EventArgs e) { frmFormula frm2 = new frmFormula(); frm2.MdiParent = this; frm2.Show(); }
private void toolStripButton2_Click(object sender, EventArgs e) { frmFormula frm2 = new frmFormula(); frm2.MdiParent = this; frm2.ShowDialog(); }