c# winform 最小化到托盘

STEP1、添加托盘图标控件NotifyIcon（直接从工具箱中拖动添加即可）

STEP2、添加（重写）窗口尺寸变动函数Form1_Resize

private void Main_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                notifyIcon1.Visible = true;
                this.Hide();
            }
        }

STEP3、添加（重写）关闭窗口事件

private void Main_FormClosing(object sender, FormClosingEventArgs e)
        {
            //注意判断关闭事件Reason来源于窗体按钮，否则用菜单退出时无法退出!
            if (e.CloseReason == CloseReason.UserClosing)
            {
                e.Cancel = true;    //取消"关闭窗口"事件
                this.WindowState = FormWindowState.Minimized;    //使关闭时窗口向右下角缩小的效果
                notifyIcon1.Visible = true;
                this.Hide();
                return;
            }
        }

STEP4、添加双击托盘图标事件（双击显示窗口）

private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            notifyIcon1.Visible = false;
            this.Show();
            WindowState = FormWindowState.Normal;
            this.Focus();
        }

STEP5、添加托盘图标的右键菜单

可以为notifyIcon1加一个ContextMenuStrip右键菜单

"退出"菜单：Application.Exit();