private void tsbtnCheckOut_Click(object sender, EventArgs e) { if (this.MdiChildren.Length == 0) { ThGoodsInfo th = new ThGoodsInfo(); th.MdiParent = this; th.Show(); } }
private void 商品退货ToolStripMenuItem_Click(object sender, EventArgs e) { if (this.MdiChildren.Length == 0) { ThGoodsInfo sg = new ThGoodsInfo(); sg.MdiParent = this; sg.Show(); } }