private void toolStripButton3_Click(object sender, EventArgs e) { if (op3 == null || op3.IsDisposed) op3 = new goods.AllGoods(); op3.MdiParent = this; op3.Show(); }
private void toolStripButton3_Click(object sender, EventArgs e) { if (op3 == null || op3.IsDisposed) { op3 = new goods.AllGoods(); } op3.MdiParent = this; op3.Show(); }