C#实现电脑锁屏并自动关机

放假期间，小朋友玩起了电脑，然后停不下来，需要采取一些措施

既然身为程序员，那就以程序的方式解决

主要实现功能：

1.监控程序进程，当进程运行时间超过一定时间后，锁屏或自动关机，让小朋友无法操作；

2.保存上次运行时间，防止重启后，时间判断被重置等问题；（开机自启动需要自行设置）

3.有对应设置页面，通过快捷键实现；

两个主要界面截图

主要实现功能如上，具体代码如下：

1.监控按钮事件：

SHIFT+F2：弹出设置页面进行维护对应监控进程、运行时长间隔；

SHIFT+F9：关闭监控程序；

屏蔽ALT+F4关闭事件

对一些系统组合键不做处理，如果要处理就比较麻烦，所以暂时忽略，小朋友也不会懂这么多的，所以无所谓

            if (e.KeyCode == Keys.F2 && e.Shift)
            {
                this.Hide();
                timer1.Enabled = false;
                FrmSetup frm = new FrmSetup();
                frm.ShowDialog();
                timer1.Enabled = true;
                e.Handled = true;
                this.Show();
            }
            else if (e.KeyCode == Keys.F9 && e.Shift)
            {
                _needClose = true;
                this.Close();
                e.Handled = true;
            }
            //Ctrl+ Alt+ Delete无法识别，要其他处理
            //win无法识别
            else if (e.KeyCode == Keys.F4 && e.Alt)// || e.KeyCode == Keys.LWin || e.KeyCode == Keys.RWin || e.KeyCode == Keys.Menu)// || e.KeyCode == Keys.Delete && e.Control && e.Alt)
            {
                e.Handled = true;
            }

2.屏蔽窗体关闭按钮事件

        //const int WM_SYSCOMMAND = 0x112;
        //const int SC_CLOSE = 0xF060;
        //const int SC_MINIMIZE = 0xF020;
        //const int SC_MAXIMIZE = 0xF030;
        protected override void WndProc(ref Message m)
        {
            var mParam = m.WParam.ToInt32();
            if (!_needClose && mParam == 0xF060)
            {
                return;
            }
            base.WndProc(ref m);
        }

3.定时器定时监测事件

        private void timer1_Tick(object sender, EventArgs e)
        {
            this.TopMost = false;
            if(_controlProList.Count < 0)
            {
                return;
            }
            if (_existsProcessList.Count < 1 && _startTime.AddMinutes(_ticks) <= DateTime.Now)
            {
                foreach (var item in _controlProList)
                {
                    var processs = Process.GetProcessesByName(item);
                    if (processs.Length > 0 && processs[0].StartTime.AddMinutes(_ticks) <= DateTime.Now)
                    {
                        _existsProcessList.Add(processs[0]);
                        if (_startTime< processs[0].StartTime)
                        {
                            _startTime = processs[0].StartTime;
                        }
                        RestData(DateTime.Now);
                        continue;
                    }
                    _count = 60;
                }
                if (_existsProcessList.Count <= 0)
                {
                    return;
                }
            }
            this.TopMost = true;
            this.Show();
            _count-= (int)(timer1.Interval/1000);
            label1.Text = $"距离{(_isClose == 1?"关机":"结束")}还有：{_count:00000}秒";
            label2.Text = $"请让电脑休息{_ticks}分钟！";
            if (_count <= 0)
            {
                _existsProcessList.ForEach((p) => p.Kill());
                _existsProcessList.Clear();
                this.Hide();
                if (_isClose == 1)
                {
                    //创建一个进程
                    System.Diagnostics.Process.Start("shutdown","-s -t 0");//关机程序
                }
                else
                {
                    InitData();
                }
            }
        }

        private void RestData(DateTime dt)
        {
            var filePath = Path.Combine(_basePath, _startTimeFileName);
            if(!Directory.Exists(_basePath))
            {
                Directory.CreateDirectory(_basePath);
            }
            File.WriteAllText(filePath, dt.ToString("yyyy-MM-dd HH:mm:ss"));

        }

        private void InitData()
        {
            _count = 60;
            if (!Directory.Exists(_basePath))
            {
                Directory.CreateDirectory(_basePath);
            }
            DateTime oldStartTime;
            var filePath = Path.Combine(_basePath, _startTimeFileName);
            if (File.Exists(filePath))
            {
                if (!DateTime.TryParse(File.ReadAllText(filePath).Trim(), out oldStartTime))
                {
                    oldStartTime = DateTime.Now.Date;
                }
            }
            else
            {
                RestData(DateTime.Now);
                oldStartTime = DateTime.Now.Date;
            }
            _startTime = oldStartTime;

            filePath = Path.Combine(_basePath, _controlorPro);
            if (!File.Exists(filePath))
            {
                _ticks = 20;
            }
            else
            {
                var str = File.ReadAllText(filePath).Split(new char[] { ';', ',', '\r', '\t', '\n', }, StringSplitOptions.RemoveEmptyEntries);
                _controlProList.Clear();
                if (str.Length > 0)
                {
                    _controlProList.AddRange(str);
                }
                if (_controlProList.Count > 0)
                {
                    if (int.TryParse(_controlProList[0], out _ticks))
                    {
                        _controlProList.RemoveAt(0);
                        if (_controlProList.Count > 0 && int.TryParse(_controlProList[0], out _isClose))
                        {
                            _controlProList.RemoveAt(0);
                        }
                    }
                }
                else
                {
                    _ticks = 20;
                }

            }
        }

源代码下载如下：

链接: https://pan.baidu.com/s/1AltN9HbZysbBRXEWBFN0Vw?pwd=4kq7 提取码: 4kq7 复制这段内容后打开百度网盘手机App，操作更方便哦

自启动设置方式

方式一：任务计划

<?xml version="1.0" encoding="UTF-16"?>
<Task version="1.2" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
  <RegistrationInfo>
    <Date>2022-02-03T11:05:35.070658</Date>
    <Author>DESKTOP-2ADSD8F\z</Author>
    <URI>\游戏控制</URI>
  </RegistrationInfo>
  <Triggers>
    <BootTrigger>
      <Enabled>true</Enabled>
    </BootTrigger>
    <LogonTrigger>
      <Repetition>
        <Interval>PT1H</Interval>
        <Duration>P1D</Duration>
        <StopAtDurationEnd>false</StopAtDurationEnd>
      </Repetition>
      <Enabled>true</Enabled>
    </LogonTrigger>
  </Triggers>
  <Principals>
    <Principal id="Author">
      <UserId>S-1-5-21-2179347130-2624757216-3876138629-1001</UserId>
      <LogonType>S4U</LogonType>
      <RunLevel>HighestAvailable</RunLevel>
    </Principal>
  </Principals>
  <Settings>
    <MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy>
    <DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries>
    <StopIfGoingOnBatteries>true</StopIfGoingOnBatteries>
    <AllowHardTerminate>true</AllowHardTerminate>
    <StartWhenAvailable>true</StartWhenAvailable>
    <RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable>
    <IdleSettings>
      <StopOnIdleEnd>true</StopOnIdleEnd>
      <RestartOnIdle>false</RestartOnIdle>
    </IdleSettings>
    <AllowStartOnDemand>true</AllowStartOnDemand>
    <Enabled>true</Enabled>
    <Hidden>false</Hidden>
    <RunOnlyIfIdle>false</RunOnlyIfIdle>
    <WakeToRun>true</WakeToRun>
    <ExecutionTimeLimit>PT72H</ExecutionTimeLimit>
    <Priority>7</Priority>
  </Settings>
  <Actions Context="Author">
    <Exec>
      <Command>F:\GameControlor\bin\Debug\GameControlor.exe</Command>
    </Exec>
  </Actions>
</Task>