如何在Windows服务启动时运行任务？

Question

我有一个Windows服务,我已经编写了代码来在OnStart()事件中运行任务:

 protected override void OnStart(string[] args)
        {
            this.DoTask();
        }

private void DoTask()
        {
            Task task1 = Task.Factory.StartNew(() => this.OriginalFileProcessor.StartPolling());

            try
            {
                Task.Wait(task1);
            }
            catch (Exception ex)
            {
                this.Log.Error("Failed running the task", ex);
            }           
        }

DoTask是一个永无止境的循环.它仅在服务停止时停止.

但是当我尝试启动服务时,它会等待很长时间然后给我以下错误:

Windows could not start the ... service on Local Computer.
Error 1053: The service did not respond to the start or control request in a timely fashion.

怎么解决？

Answer 1

你为什么要等完你的任务？

我认为Task.Wait阻止你当前的线程,然后你在启动服务时遇到超时.

编辑:您需要删除此块:

try
{
    Task.Wait(task1);
}
catch (Exception ex)
{
    this.Log.Error("Failed running the task", ex);
}  

Task.Wait确实阻止了你当前的线程.根据MSDN:

Task.Wait方法

等待任务完成执行.

编辑2改为执行此操作

Task task1 = Task.Factory.StartNew(() => this.OriginalFileProcessor.StartPolling()).ContinueWith( t =>
{
     var aggException = t.Exception.Flatten();
     foreach(var ex in aggException.InnerExceptions)
         this.Log.Error("Failed running the task", ex);
}, 
TaskContinuationOptions.OnlyOnFaulted);