c# - 显示气球通知

Question

我正在尝试使用下面的代码来显示气球通知。我已经验证它是通过使用断点执行的。它也显示没有错误。

我应该怎么做才能调试它，因为它没有抛出错误并且没有显示气球？

private void showBalloon(string title, string body)
{
    NotifyIcon notifyIcon = new NotifyIcon();
    notifyIcon.Visible = true;

    if (title != null)
    {
        notifyIcon.BalloonTipTitle = title;
    }

    if (body != null)
    {
        notifyIcon.BalloonTipText = body;
    }

    notifyIcon.ShowBalloonTip(30000);
}

score 48 · Accepted Answer

您实际上并未指定要在任务栏中显示的图标。在 LINQPad 中运行您的代码，只需notifyIcon.Icon = SystemIcons.Application在调用之前添加ShowBalloonTip即可获得要显示的提示。另请注意，您应该Dispose在完成NotifyIcon实例后调用。

score 35 · Accepted Answer

马修发现了这个问题，但我仍然努力将所有部分放在一起。所以我认为一个在 LINQPad 中按原样工作的简洁示例会有所帮助（并且可能在其他地方）。只需引用System.Windows.Forms程序集，然后将此代码粘贴进去。

var notification = new System.Windows.Forms.NotifyIcon()
{
    Visible = true,
    Icon = System.Drawing.SystemIcons.Information,
    // optional - BalloonTipIcon = System.Windows.Forms.ToolTipIcon.Info,
    // optional - BalloonTipTitle = "My Title",
    BalloonTipText = "My long description...",
};

// Display for 5 seconds.
notification.ShowBalloonTip(5000);

// This will let the balloon close after it's 5 second timeout
// for demonstration purposes. Comment this out to see what happens
// when dispose is called while a balloon is still visible.
Thread.Sleep(10000);

// The notification should be disposed when you don't need it anymore,
// but doing so will immediately close the balloon if it's visible.
notification.Dispose();

score 2 · Accepted Answer

请参阅下面的源代码。

using System;
using System.ComponentModel;
using System.Drawing;
using System.IO;
using System.Reflection;
using System.Windows.Forms;

namespace ShowToolTip
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btBallonToolTip_Click(object sender, EventArgs e)
        {
            ShowBalloonTip();
            this.Hide();
        }

        private void ShowBalloonTip()
        {
            Container bpcomponents = new Container();
            ContextMenu contextMenu1 = new ContextMenu();

            MenuItem runMenu = new MenuItem();
            runMenu.Index = 1;
            runMenu.Text = "Run...";
            runMenu.Click += new EventHandler(runMenu_Click);

            MenuItem breakMenu = new MenuItem();
            breakMenu.Index = 2;
            breakMenu.Text = "-------------";

            MenuItem exitMenu = new MenuItem();
            exitMenu.Index = 3;
            exitMenu.Text = "E&xit";

            exitMenu.Click += new EventHandler(exitMenu_Click);

            // Initialize contextMenu1
            contextMenu1.MenuItems.AddRange(
                        new System.Windows.Forms.MenuItem[] { runMenu, breakMenu, exitMenu });

            // Initialize menuItem1

            this.ClientSize = new System.Drawing.Size(0, 0);
            this.Text = "Ballon Tootip Example";

            // Create the NotifyIcon.
            NotifyIcon notifyIcon = new NotifyIcon(bpcomponents);

            // The Icon property sets the icon that will appear
            // in the systray for this application.
            string iconPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + @"\setup-icon.ico";
            notifyIcon.Icon = new Icon(iconPath);

            // The ContextMenu property sets the menu that will
            // appear when the systray icon is right clicked.
            notifyIcon.ContextMenu = contextMenu1;

            notifyIcon.Visible = true;

            // The Text property sets the text that will be displayed,
            // in a tooltip, when the mouse hovers over the systray icon.
            notifyIcon.Text = "Morgan Tech Space BallonTip Running...";
            notifyIcon.BalloonTipText = "Morgan Tech Space BallonTip Running...";
            notifyIcon.BalloonTipTitle = "Morgan Tech Space";
            notifyIcon.ShowBalloonTip(1000);
        }

        void exitMenu_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        void runMenu_Click(object sender, EventArgs e)
        {
            MessageBox.Show("BallonTip is Running....");
        }
    }
}

score 2 · Accepted Answer

为了未来的编码员：

[timeout] 参数自 windows vista 起已弃用

请参阅：C# NotifyIcon 显示气球参数已弃用

因此，您不妨将 0 放入 > Windows Vista 的参数中。更糟糕的是，对链接答案的评论表明，这些气球的替代品，吐司通知，仅在 Windows 8 中引入。因此，对于可怜的旧 Windows 7 落在两个凳子之间，Vista < 7 < 8，我们似乎处于不管 Windows 想把那个气球放在那里多长时间都行不通！我注意到它最终确实会消失，但是经过一些经验测试后，我很确定该参数确实被忽略了。

因此，在上述答案的基础上，特别是采用@jlmt 在评论中建议的 lambda 函数，这里有一个适用于 Windows 7 的解决方案：

//Todo: use abstract factory pattern to detect Windows 8 and in that case use a toastnotification instead
        private void DisplayNotificationBalloon(string header, string message)
        {
            NotifyIcon notifyIcon = new NotifyIcon
            {
                Visible = true,
                Icon = SystemIcons.Application
            };
            if (header != null)
            {
                notifyIcon.BalloonTipTitle = header;
            }
            if (message != null)
            {
                notifyIcon.BalloonTipText = message;
            }
            notifyIcon.BalloonTipClosed += (sender, args) => dispose(notifyIcon);
            notifyIcon.BalloonTipClicked += (sender, args) => dispose(notifyIcon);
            notifyIcon.ShowBalloonTip(0);
        }

        private void dispose(NotifyIcon notifyIcon)
        {
            notifyIcon.Dispose();
        }

笔记

我在里面放了一个 TODO 来为 Windows 8 编写另一个实现，因为现在人们在 Windows 7/8 上的比例是 50/50，所以支持更新的功能会很好。我猜想为多个版本的 Windows 编写此代码的其他任何人都应该这样做，理想情况下。或者干脆停止支持 7 并切换到使用 ToastNotification。
我特意在一个函数中定义了处理，这样我就可以调试并验证断点确实被命中了。

score 1 · Accepted Answer

ShowBalloonnTip 采用毫秒数。3 毫秒可能太快了，你甚至看不到。尝试更多类似 3000 的东西

您可能需要将组件模型传递给构造函数。这是我在所有示例中看到的。抱歉很久没用了。在这里查看第一个答案：

通知图标不显示

score 0 · Accepted Answer

看看这里的例子 http://msdn.microsoft.com/en-us/library/system.windows.forms.notifyicon.aspx

我看到它与您的代码之间存在一些明显的差异，您遗漏了许多部分，例如创建 aComponentModelContainer并将其传递给NotifyIcon的构造函数。

c# - 显示气球通知

6 回答 6

笔记

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