Csharp NotifyIcon 的 ContextMenu 不会立即更新

这里的主要问题是，当菜单本身即将出现时，您将通过单击Tray图标来替换ConextMenu.菜单的实例已经初始化为old one.

您只需创建一次菜单，然后根据您要查询的服务的状态启用/禁用项目.

我将用ConextMenuBar替换ConextMenu，因为前者在.NET中已经是deprecated了.

I've also added a Close Menu Item, which is used to terminate the Process.
This is also going to dispose both the ContextMenuStrip and the NotifyIcon, so it's removed from the Tray

using System.ServiceProcess;
using System.Windows.Forms;

class TrayAppContext : ApplicationContext {
    private readonly NotifyIcon trayIcon;
    private readonly ServiceController sc;
    private readonly ContextMenuStrip cms = null;

    public TrayAppContext() {
        sc = new ServiceController("RamLogger");
        cms = GetContextMenu();
        trayIcon = new NotifyIcon() {
            Icon = Properties.Resources.icon1,
            Text = "RamLogger",
            ContextMenuStrip = cms,
            Visible = true
        };
        trayIcon.MouseClick += OnClick;
    }

    void OnClick(object sender, MouseEventArgs e) {
        if (e.Button != MouseButtons.Right) return;

        bool startMenuState = false;
        bool stopMenuState = false;
        sc.Refresh();
        if (sc.Status.HasFlag(ServiceControllerStatus.Running) || sc.Status.HasFlag(ServiceControllerStatus.StartPending)) {
            stopMenuState = true;
        }
        else {
            startMenuState = true;
        }
        cms.Items["Start"].Enabled = startMenuState;
        cms.Items["Stop"].Enabled = stopMenuState;
    }

    private ContextMenuStrip GetContextMenu() {
        var cms = new ContextMenuStrip();
        cms.Items.Add("Status", null, null);
        cms.Items.Add("-");
        cms.Items.Add(new ToolStripMenuItem("Start", null, Start, "Start") { Enabled = false });
        cms.Items.Add(new ToolStripMenuItem("Stop", null, Stop, "Stop") { Enabled = false });
        cms.Items.Add("-");
        cms.Items.Add(new ToolStripMenuItem("Close", null, Close, "Close") { Enabled = true });
        return cms;
    }

    void Start(object sender, EventArgs e) => sc.Start();
    void Stop(object sender, EventArgs e) => sc.Stop();
    void Close(object sender, EventArgs e) {
        cms?.Dispose();
        trayIcon.Dispose();
        ExitThreadCore();
    }
}

In case someone wants to test this and doesn't know how, in 100 replace the default:

Application.Run(new Form1());

有:

Application.Run(new TrayAppContext());