.NET6 NotifyIcon ContextMenu 不會顯示

Question

所以我在 .NET 6 中構建了一個應用程序，我能夠讓它在托盤區域顯示NotifyIcon ，但是 NotifyIcon 上的上下文菜單（右鍵單擊）不會顯示。

我在Implement a menu on tray icon for .NET 5/6 win forms之后構建了這段代碼（然后更改它，以便它不使用內聯創建來查看它是否導致了這個問題）

所以我唯一能想到的是我的應用程序沒有表單，所以我從 Program.cs 文件運行這段代碼。

internal class Program
{
    private static NotifyIcon notifyIcon;
    private static ContextMenuStrip cms;

    private static async Task Main(string[] args)
    {
        notifyIcon = new NotifyIcon();
        notifyIcon.Icon = new Icon("Assets/icon.ico");
        notifyIcon.Text = "Notify";

        cms = new ContextMenuStrip();

        cms.Items.Add(new ToolStripMenuItem("Reconnect", null, new EventHandler(Reconnect_Click)));
        cms.Items.Add(new ToolStripSeparator());
        cms.Items.Add(new ToolStripMenuItem("Quit", null, new EventHandler(Quit_Click), "Quit"));

        notifyIcon.ContextMenuStrip = cms;
        notifyIcon.Visible = true;

        new Thread(() =>
        {
            while (true)
            {
                Thread.Sleep(10000);
                // do application background task
            }
        }).Start();
    }

    protected static void Reconnect_Click(object? sender, System.EventArgs e)
    {
        // do something
    }

    protected static void Quit_Click(object? sender, System.EventArgs e)
    {
        Environment.Exit(0);
    }
}

更新了 ContextMenuStrip 實例以針對未在主上下文/作用域中構建的 class 進行保存

Answer 1

您需要有一個消息循環來處理 Windows 消息，這些消息在 Windows 應用程序中使用，以便在操作系統和應用程序的用戶界面之間進行通信。

如果您想要一個沒有可見表單但仍運行消息循環的應用程序，請使用Application.Run方法和ApplicationContext object。然后您還可以使用上下文來表示應用程序結束。

示例代碼：

internal static class Program
{
    private static NotifyIcon notifyIcon;
    private static ContextMenuStrip cms;
    private static ApplicationContext context;

    [STAThread]
    static void Main()
    {
        ApplicationConfiguration.Initialize();

        notifyIcon = new NotifyIcon();
        notifyIcon.Icon = new Icon("Assets/icon.ico");
        notifyIcon.Text = "Notify";

        cms = new ContextMenuStrip();

        cms.Items.Add(new ToolStripMenuItem("Reconnect", null, new EventHandler(Reconnect_Click)));
        cms.Items.Add(new ToolStripSeparator());
        cms.Items.Add(new ToolStripMenuItem("Quit", null, new EventHandler(Quit_Click), "Quit"));

        notifyIcon.ContextMenuStrip = cms;
        notifyIcon.Visible = true;

        // Create an ApplicationContext and run a message loop
        // on the context.
        context = new ApplicationContext();
        Application.Run(context);

        // Hide notify icon on quit
        notifyIcon.Visible = false;
    }

    static void Reconnect_Click(object? sender, System.EventArgs e)
    {
        MessageBox.Show("Hello World!");
    }

    static void Quit_Click(object? sender, System.EventArgs e)
    {
        // End application though ApplicationContext
        context.ExitThread();
    }
}