在Windows服务中不调用计时器tick事件

我有一个窗口服务,它在指定的时间播放声音文件,所以为了做到这一点,我已经采取了Timer但它的Tick事件永远不会被触发,同样在WinForm应用程序中工作。

以下是我服务的代码片段……

public partial class ClockService : ServiceBase { private TimeSpan _alarmTime = new TimeSpan(9, 55, 0); private int _snoozeTime = 2; // 2 minutes private int _repeatCounter = -1; private const int ALARM_REPETITION = 5; private string _alarmSoundPath = @"C:\Sound\default.wav"; private string _alarmLogPath = @"C:\Sound\log.txt"; public ClockService() { InitializeComponent(); alarmTimer.Enabled = true; } protected override void OnStart(string[] args) { using (FileStream fileStream = new FileStream(_alarmLogPath, FileMode.OpenOrCreate)) { using (StreamWriter writer = new StreamWriter(fileStream)) { writer.WriteLine("Service has started at {0}", DateTime.Now); } } } protected override void OnStop() { using (FileStream fileStream = new FileStream(_alarmLogPath, FileMode.OpenOrCreate)) { using (StreamWriter writer = new StreamWriter(fileStream)) { writer.WriteLine("Service has stopped at {0}", DateTime.Now); } } } private void alarmTimer_Tick(object sender, EventArgs e) { using (FileStream fileStream = new FileStream(_alarmLogPath, FileMode.OpenOrCreate)) { using (StreamWriter writer = new StreamWriter(fileStream)) { writer.WriteLine("Alarm time is: {0}", _alarmTime); } } TimeSpan currentTime = new TimeSpan(DateTime.Now.TimeOfDay.Hours, DateTime.Now.TimeOfDay.Minutes, DateTime.Now.TimeOfDay.Seconds); if (currentTime == _alarmTime) { using (FileStream fileStream = new FileStream(_alarmLogPath, FileMode.OpenOrCreate)) { using (StreamWriter writer = new StreamWriter(fileStream)) { writer.WriteLine("Alarm time is: {0} and current time is: {1}", _alarmTime, currentTime); } } _alarmTime = _alarmTime.Add(new TimeSpan(0, _snoozeTime, 0)); _repeatCounter++; if (File.Exists(_alarmSoundPath)) { SoundPlayer player = new SoundPlayer(_alarmSoundPath); player.PlayLooping(); } } if (_repeatCounter == ALARM_REPETITION) { _alarmTime = _alarmTime.Subtract(new TimeSpan(0, (ALARM_REPETITION * _snoozeTime), 0)); _repeatCounter = 0; } } } 

为了确保我已正确完成所有操作,这是我的InitializeComponent方法

  private void InitializeComponent() { this.components = new System.ComponentModel.Container(); this.alarmTimer = new System.Windows.Forms.Timer(this.components); this.alarmTimer.Enabled = true; this.alarmTimer.Interval = 1000; this.alarmTimer.Tick += new System.EventHandler(this.alarmTimer_Tick); this.ServiceName = "PravoAlarmService"; } 

请有人看看并指导我…问题是嘀嗒事件永远不会被解雇..

尝试使用System.Timers.Timer

 this.alarmTimer = new System.Timers.Timer(); 

System.Windows.Forms.Timer – 顾名思义 – 适用于Forms应用程序,但不适用于NT服务。

我认为System.Timers.Timer是一个更好的选择:

 Timer _timer = new Timer(); // In miliseconds 60000 = 1 minute // This timer will tick every 1 minute _timer.Interval += 6000; // Activate the timer _timer.Enabled = true; // When timer "tick" _timer.Elapsed += new ElapsedEventHandler(_timer_Elapsed); 

不要使用System.Windows.FOrms.Timer,使用System.Threading.Timer。

服务不是表格。

尝试使用其他Timer 🙂 这里有区别

你确定这是计时器吗? Windows服务访问音响系统是非常不寻常的(如何将其关闭?)它可能被阻止或者可能需要启用“与桌面交互”。

话虽如此,TomTom是对的,Forms Timers是关于能够使用你没有的UI线程,而不是使用线程计时器。