简单实现系统托盘

实现：
1。添加 contextMenu1 上下文菜单控件。
 
2。添加 notifyIcon1 控件。并设置 contextMenu 属性。
 
3。创建显示的图标
  private void Form1_Load(object sender, System.EventArgs e)
  {
   notifyIcon1.Icon = new System.Drawing.Icon("..\\..\\BICYCLE.ICO");
   notifyIcon1.Visible = true;
   notifyIcon1.Text = "BICYCLE";
  }

4。让图标不停的变幻
   添加 timer控件
  private void timer1_Tick(object sender, System.EventArgs e)
  {
       if (notifyIcon1.Text == "BICYCLE")
       {
        notifyIcon1.Icon = new System.Drawing.Icon("..\\..\\CARS.ICO");
        notifyIcon1.Text="CARS";
 
       }
       else
       {
        notifyIcon1.Icon = new System.Drawing.Icon("..\\..\\BICYCLE.ICO");
        notifyIcon1.Text="BICYCLE";
       }
  }