private void btn_marca_Click(object sender, EventArgs e) { marca f = new marca(); f.MdiParent = this.MdiParent; f.Show(); }
private void marcaToolStripMenuItem_Click(object sender, EventArgs e) { if (mar == null) { mar = new marca(); mar.MdiParent = this; mar.FormClosed += new FormClosedEventHandler(FormMarca_FormCLosed); mar.Show(); } }