ContextMenuStrip.Items慢克隆

Question

我有两个类，每个类都有自己的ContextMenuStrip。由于每个Obejct都可以从另一个Obejct访问，所以我希望将一个对象的每个ToolStripMenuItem嵌入到其他ContextMenuStrip的一个DropDown中。

对象的类型为MAC和TCPIP，这是MACs ContextMenuStrip的片段

ContextMenuStrip cms = new ContextMenuStrip();
foreach (TCPIP ip in AssignedTCPIPentries) {
    mi = new ToolStripMenuItem(ip.IP + " - " + ip.Hostname);
    for (int t = 0; t < ip.SingleItemContextMenue.Items.Count; t++) {
        mi.DropDown.Items.Add(ip.SingleItemContextMenue.Items[t]);
    }
    cms.Items.Add(mi);
}

我的问题是，如果我使用TCPIP onbject并访问ContextMenuStrip，它就会自动打开。(按原计划)

当我调用MACs ContextMenuStrip并希望将每个已分配的TCPIP对象的每个ContextMenuStrip.Item嵌入到一个子菜单(如上面的代码所示)时，需要使用年龄(每个TCPIP对象约10秒)来完成(每个TCPIP遵从21 ToolStripMenuItems)。但为什么它的表现如此糟糕，我如何避免这种情况呢？

TCPIP.SingleItemContextMenue部件的片段：

public ContextMenuStrip SingleItemContextMenue {
            get {
                ContextMenuStrip cms = new ContextMenuStrip();
                ToolStripMenuItem mi = new ToolStripMenuItem();

                mi.Text = "IP Infos [" + IP + "]";
                mi.Click += new EventHandler(showDetailedInformation);
                mi.Image = Toolbox.Properties.Resources.Info_64;
                cms.Items.Add(mi);

                cms.Items.Add(new ToolStripSeparator()); // Horizontal line

                mi = new ToolStripMenuItem("Copy IP [" + IP + "]");
                mi.Image = Toolbox.Properties.Resources.Copy_64;
                mi.Click += new EventHandler((ss, e) => general.copyStringIntoClipboard(ss, e, IP));
                cms.Items.Add(mi);

              //And some more...
                return cms;
            }
        }

PS:由于枚举问题，foreach没有通过ContextMenuStrip.Items进行迭代。但我也不明白原因。但也许这和我的问题有关？

Answer 1

每次使用SingleItemContextMenue时都会调用ip.SingleItemContextMenue getter。

ContextMenuStrip cms = new ContextMenuStrip();
foreach (TCPIP ip in AssignedTCPIPentries) {
    mi = new ToolStripMenuItem(ip.IP + " - " + ip.Hostname);
    var ipSingleItemContextMenueItems = ip.SingleItemContextMenue.Items;     // get items

    for (int t = 0; t < ipSingleItemContextMenueItems.Count; t++) {
        mi.DropDown.Items.Add(ipSingleItemContextMenueItems[t]);
    }
    cms.Items.Add(mi);
}