实现窗口最小化到系统托盘C#代码

    //1.设置WinForm窗体属性showinTask=false  
    //2.加notifyicon控件notifyIcon1，为控件notifyIcon1的属性Icon添加一个icon图标。  
    //3.添加窗体最小化事件(首先需要添加事件引用)：  
    this.SizeChanged += new System.EventHandler(this.Form1_SizeChanged);  
    //上面一行是主窗体InitializeComponent()方法中需要添加的引用  
    private void Form1_SizeChanged(object sender,EventArgs e)  
    {  
        if(this.WindowState == FormWindowState.Minimized)  
        {  
            this.Hide();  
            this.notifyIcon1.Visible=true;  
        }  
    }  
    //4.添加点击图标事件(首先需要添加事件引用)：  
    private void notifyIcon1_Click(object sender,EventArgs e)  
    {  
        this.Visible = true;  
        this.WindowState = FormWindowState.Normal;  
        this.notifyIcon1.Visible = false;  
    }       //5.可以给notifyIcon添加右键菜单：  
    //主窗体中拖入一个ContextMenu控件NicontextMenu，点中控件，在上下文菜单中添加菜单，notifyIcon1的ContextMenu行为中选中NicontextMenu 作为上下文菜单。  
    this.notifyIcon1 = new System.Windows.Forms.NotifyIcon(this.components);  
    this.NicontextMenu = new System.Windows.Forms.ContextMenu();  
    this.menuItem_Hide = new System.Windows.Forms.MenuItem();  
    this.menuItem_Show = new System.Windows.Forms.MenuItem();  
    this.menuItem_Aubot = new System.Windows.Forms.MenuItem();  
    this.menuItem_Exit = new System.Windows.Forms.MenuItem();  
      
    this.notifyIcon1.ContextMenu = this.NicontextMenu;  
    this.notifyIcon1.Icon = ((System.Drawing.Icon)(resources.GetObject( "NotifyIcon.Icon ")));  
    this.notifyIcon1.Text = " ";  
    this.notifyIcon1.Visible = true;  
    this.notifyIcon1.DoubleClick += new System.EventHandler(this.notifyIcon1_DoubleClick);  
    this.notifyIcon1.Click += new System.EventHandler(this.notifyIcon1_Click);  
      
    this.NicontextMenu.MenuItems.AddRange(  
      
        new System.Windows.Forms.MenuItem[]  
        {  
            this.menuItem_Hide,this.menuItem_Show,this.menuItem_Aubot,this.menuItem_Exit  
        }  
    );  
      
    //  
    // menuItem_Hide  
    //  
    this.menuItem_Hide.Index = 0;  
    this.menuItem_Hide.Text = "隐藏 ";  
    this.menuItem_Hide.Click += new System.EventHandler(this.menuItem_Hide_Click);  
    //  
    // menuItem_Show  
    //  
    this.menuItem_Show.Index = 1;  
    this.menuItem_Show.Text = "显示 ";  
    this.menuItem_Show.Click += new System.EventHandler(this.menuItem_Show_Click);  
    //  
    // menuItem_Aubot  
    //  
    this.menuItem_Aubot.Index = 2;  
    this.menuItem_Aubot.Text = "关于 ";  
    this.menuItem_Aubot.Click += new System.EventHandler(this.menuItem_Aubot_Click);  
    //  
    // menuItem_Exit  
    //  
    this.menuItem_Exit.Index = 3;  
    this.menuItem_Exit.Text = "退出 ";  
    this.menuItem_Exit.Click += new System.EventHandler(this.menuItem_Exit_Click);  
      
    protected override void OnClosing(CancelEventArgs e)  
    {  
        this.ShowInTaskbar = false;  
        this.WindowState = FormWindowState.Minimized;  
        e.Cancel = true;  
    }  
      
    protected override void OnClosing(CancelEventArgs e)  
    {  
        //this.ShowInTaskbar = false;  
        this.WindowState = FormWindowState.Minimized;  
        e.Cancel = true;  
    }  
      
    private void CloseCtiServer()  
    {  
        timer.Enabled = false;  
        DJ160API.DisableCard();  
        this.NotifyIcon.Visible = false;  
        this.Close();  
        this.Dispose();  
        Application.Exit();  
    }  
      
    private void HideCtiServer()  
    {  
        this.Hide();  
    }  
      
    private void ShowCtiServer()  
    {  
        this.Show();  
        this.WindowState = FormWindowState.Normal;  
        this.Activate();  
      
    }  
    private void CtiManiForm_Closing(object sender,System.ComponentModel.CancelEventArgs e)  
    {  
        this.CloseCtiServer();  
    }  
      
    private void menuItem_Show_Click(object sender,System.EventArgs e)  
    {  
        this.ShowCtiServer();  
    }  
      
    private void menuItem_Aubot_Click(object sender,System.EventArgs e)  
    {  
      
    }  
      
    private void menuItem_Exit_Click(object sender,System.EventArgs e)  
    {  
        this.CloseCtiServer();  
    }  
      
    private void menuItem_Hide_Click(object sender,System.EventArgs e)  
    {  
        this.HideCtiServer();  
    }  
      
    private void CtiManiForm_SizeChanged(object sender,System.EventArgs e)  
    {  
        if(this.WindowState == FormWindowState.Minimized)  
        {  
            this.HideCtiServer();  
        }  
    }  
      
    private void notifyIcon1_DoubleClick(object sender,System.EventArgs e)  
    {  
        this.ShowCtiServer();  
    }