更好的方式来不断地在C＃中定期运行功能 [英] Better way to constantly run function periodically in C#

问题描述

我有一个不断检查新增加的一个在线数据库C＃程序。我有这样的代码有它检查每10秒

I have a C# program that is constantly checking for new additions to an online DB. I have this code to have it check every 10 seconds

    static void Main(string[] args)
    {
        boolean run = true;
        while (run)
        {
            DBConnect Db = new DBConnect();

            // do amazing awesome mind blowing cool stuff

            Db.closeConnection();

            // wait for 10 seconds
            int wait = 10 * 1000;
            System.Threading.Thread.Sleep(wait);
        }
    }

我的错误报告的帖子到数据库，如果出现重大错误的程序关闭。我的函数内的特定错误之外，就是这种方法安全有效的？

i have error reporting that posts to the DB and if a major error occurs the program shuts down. Outside of the specific errors within my function, is this method secure and efficient?

推荐答案

您应该重写你的程序作为Windows服务，要记录你的程序运行方式，您不需要依赖用户。

You should rewrite your program as a windows service, that way you do not need to rely on a user to be logged for your program to run.

如果你的服务的路线走，我会换出。无限循环的一个计时器

If you do go with the service route, I would swap out the infinite loop for a timer.

public partial class Service1 : ServiceBase
{
    public Service1()
    {
        InitializeComponent();
        int wait = 10 * 1000;
        timer = new Timer(wait);
        timer.Elapsed += timer_Elapsed;

        // We don't want the timer to start ticking again till we tell it to.
        timer.AutoReset = false;
    }

    private System.Timers.Timer timer;

    protected override void OnStart(string[] args)
    {
        timer.Start();
    }

    void timer_Elapsed(object sender, ElapsedEventArgs e)
    {
        try
        {
            try
            {
                DBConnect Db = new DBConnect())

                // do amazing awesome mind blowing cool stuff
            }
            finally
            {
                Db.closeConnection(); //We put this in a finally block so it will still happen, even if an exception is thrown.
            }
            timer.Start();
         }
         catch(SomeNonCriticalException ex)
         {
             MyExecptionLogger.Log(ex, Level.Waring); //Log the exception so you know what went wrong
             timer.Start(); //Start the timer for the next loop
         }
         catch(Exception ex)
         {
             MyExecptionLogger.Log(ex, Level.Critical); //Log the exception so you know what went wrong
             this.Stop(); //Stop the service
         }
    }

    protected override void OnStop()
    {
        timer.Stop();
    }
}

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