winform 托盘

//首先要设置notifyIcon属性：Icon设置ico图标，否则在系统托盘无图标显示
private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
{
    this.WindowState = FormWindowState.Normal;
    //若使用Hide()时，要用Show()方法显示窗体
}

private void MainForm_Resize(object sender, EventArgs e)
{
    this.ShowInTaskbar = this.WindowState != FormWindowState.Minimized;//最小化时不在任务栏显示
    //或者如下
    if (this.WindowState == FormWindowState.Minimized)   Hide();//最小时隐藏
}

//设置系统托盘右击菜单
拖控件ContextMenuStrip, 在notifyIcon的ContextMenuStrip属性选择此contextMenuStrip控件。contextMenuStrip可增加菜单项点击事件