支持 WPF / WinForms / Avalonia / WinUI / MAUI / Wice 应用。

先看效果：

using NotifyIconEx;

var notifyIcon = new NotifyIcon()
{
    Text = "NotifyIcon",
    Icon = Icon.ExtractAssociatedIcon(Process.GetCurrentProcess().MainModule?.FileName!)!
};
notifyIcon.AddMenu("MenuItem1", new Bitmap(ResourceHelper.GetStream("pack://application:,,,/Assets/Images/Lock.png")));
var toDisableItem = notifyIcon.AddMenu("MenuItem2", new Bitmap(ResourceHelper.GetStream("pack://application:,,,/Assets/Images/Lock.png")));
notifyIcon.AddMenu("-");
notifyIcon.AddMenu("MenuItem3");
notifyIcon.AddMenu("MenuItem4", true);
notifyIcon.AddMenu("MenuItem5", OnClick);
notifyIcon.AddMenu("-");
notifyIcon.AddMenu("SubMenu", null!,
[
    new ToolStripMenuItem("SubMenuItem1"),
    new ToolStripMenuItem("SubMenuItem2"),
    new ToolStripMenuItem("SubMenuItem3"),
    new ToolStripMenuItem("SubSubMenu", null!,
    [
        new ToolStripMenuItem("SubSubMenuItem1"),
        new ToolStripMenuItem("SubSubMenuItem2"),
        new ToolStripMenuItem("SubSubMenuItem3")
    ])
]);
notifyIcon.AddMenu("-");
notifyIcon.AddMenu("Exit", (_, _) => Current.Shutdown());
notifyIcon.BalloonTipShown += OnBalloonTipShown;

toDisableItem.Enabled = false;

void OnBalloonTipShown(object? sender, EventArgs e)
{
    Debug.WriteLine("OnBalloonTipShown");
}

void OnClick(object? sender, EventArgs e)
{
    notifyIcon.BalloonTipTitle = "Title";
    notifyIcon.BalloonTipText = "This Balloon Tips";
    notifyIcon.ShowBalloonTip(5);
}

可用于 .NET 5.0 以及 .NET Framework 4.6.2。

示例工程：

1. NotifyIcon.Demo.Avalonia for Avalonia Application.

2. NotifyIcon.Demo.Maui for MAUI Application.

3. NotifyIcon.Demo.WPF for WPF Application.

4. NotifyIcon.Demo.Wice for Wice Application.

5. NotifyIcon.Demo.WinForm for WinForms Application.

6. NotifyIcon.Demo.WinUI for WinUI Application.

开源链接：https://github.com/lemutec/NotifyIconEx 

Nuget包：NuGet Gallery | NotifyIconEx 1.0.9