Minimize to system tray

Question

i was following the instruction on page

but then, there's no icon attached for the application, so after the form is hidden, i cannot reshow the form, since there's no icon on the system tray,

how do i resolve this ?

here is my code

 private void Form1_Resize(object sender, EventArgs e)
    {
        if (FormWindowState.Minimized == this.WindowState)
        {
            notifyIcon1.Visible = true;
            cmd.cetakSukses(ident.judul_App + " Diperkecil ke dalam System Tray");
            notifyIcon1.BalloonTipText = ident.judul_App + " Diperkecil ke dalam System Tray";
            notifyIcon1.BalloonTipTitle = ident.judul_App;
            notifyIcon1.BalloonTipIcon = ToolTipIcon.Error;
            notifyIcon1.ShowBalloonTip(500);                
            this.Hide();
        }
        else
        {                

        }
    }

update :

i have attached the icon, and the icon still not showing on the system tray

and i figured how to make the form showing, i need to add the following code to notifyicon

 private void notifyIcon1_DoubleClick(object sender, EventArgs e)
    {
        this.Show();
    }

Answer 1

You can set the notify icon at design using the Properties sheet:

Or you can add/change the icon property at runtime using the following code:

notifyIcon1.Icon = new Icon("appicon.ico");

Answer 2

This is how i implemented through code behind for a WPF app.

    System.Windows.Forms.NotifyIcon m_NotifyIcon;

    public StartWindow()
    {
        InitializeComponent();

        m_NotifyIcon = new System.Windows.Forms.NotifyIcon();
        m_NotifyIcon.Icon = new System.Drawing.Icon(IconPath);
        m_NotifyIcon.Visible = true;
        m_NotifyIcon.BalloonTipTitle = "Tip here";
        m_NotifyIcon.Text = "Text here";

        m_NotifyIcon.DoubleClick += delegate(object sender, EventArgs args)
        {
            this.Show();
            this.WindowState = WindowState.Normal;
        };
    }

    protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
    {
        try
        {
            if (m_NotifyIcon != null)
                m_NotifyIcon.Dispose();
        }
        catch { }

        base.OnClosing(e);
    }

    protected override void OnStateChanged(EventArgs e)
    {
        if (WindowState == WindowState.Minimized)
            this.Hide();

        base.OnStateChanged(e);
    }

Answer 3

You need to give you application an icon either by using visual studio or programatically.

You can do it in VS by going to the project properties and selecting the application tab

Or you can set it at runtime if you have icon files attached to your project already.

private NotifyIcon appIcon = new NotifyIcon();

appIcon.Icon = new System.Drawing.Icon("myApp.ico");