// 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; 
} 
} 
.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; 
} 


//csharp/6089