设置窗体属性showinTask=false;加notifyicon控件notifyIcon1,为控件notifyIcon1的属性Icon添加一个icon图标;添加窗体最小化事件
// 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; }
.可以给notifyIcon添加右键菜单: 
主窗体中拖入一个ContextMenu控件contextMenu1,点中控件,在上下文菜单中添加菜单,notifyIcon1的ContextMenu行为中选中contextMenu1作为上下文菜单。 
(可以在子菜单中添加行为)