How to Build a System Tray Application in .NET Windows Forms?

Create a systray-only .NET Windows Forms application

To create a Windows Forms application that only runs in the system tray, follow the steps outlined in the Code Project article "Creating a Tray Application":

1. Modify the entry point:

Change the Application.Run(new Form1()); line in Program.cs to start a custom class that inherits from ApplicationContext.

2. Initialize NotifyIcon:

In the constructor of this custom class, initialize a NotifyIcon instance.

3. Implement right-click menu:

Add a context menu to NotifyIcon by setting its ContextMenu property.

4. Handle icon events:

Implement event handlers for any desired icon events such as clicks or tooltips.

5. Exit the application:

Create an event handler to handle the exit event and exit the application gracefully.

Here is a sample code snippet demonstrating this approach:

<code class="language-c#">static class Program
{
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new MyCustomApplicationContext());
    }
}

public class MyCustomApplicationContext : ApplicationContext
{
    private NotifyIcon trayIcon;

    public MyCustomApplicationContext()
    {
        // 初始化托盘图标
        trayIcon = new NotifyIcon()
        {
            Icon = Resources.AppIcon,
            ContextMenu = new ContextMenu(new MenuItem[] {
                new MenuItem("退出", Exit)
            }),
            Visible = true
        };
    }

    void Exit(object sender, EventArgs e)
    {
        // 隐藏托盘图标
        trayIcon.Visible = false;
        Application.Exit();
    }
}</code>

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