Question

I have a timer executing a loop executing a series of threads. Each thread simply polls a serial device (on unique ports) and writes the data to a MySQL Database for pickup by a web application.

我只想看一看 lo子里的最后一线。

这里是我的时间<代码>Interval方法。

static void glob_timer_Elapsed(object sender, ElapsedEventArgs e)
{
    foreach (object[] row in user_ids)
    {
        Console.WriteLine(row[0].ToString() + ":" + row[1].ToString());
        ThreadStart starter = delegate { Functions.UpdateFor(row[0].ToString(), row[1].ToString()); };
        new Thread(starter).Start();
    }
}

用户_ids is a List<object[]> 载有来自询问的浏览量;因此,row[0] =user ID<>em>,row } =Com Portony/em>

在职能<代码>上: public static void UpdateFor(string uid, string com_name) { try { Console.WriteLine("[" + uid + "]- " + DateTime.Now.ToString() + " : " + "Begin read transmission."); When this is run, in the console I see 1:COM1 2:COM2 [2]-{DateTime} : Begin read transmission为什么我看不到《<代码>UpdateFor for uid 1.

注:我还核实了从COM1中拟写给非行的数据。

Answer 1

你们正面临一个封闭问题。每位代表在每一行程中都提到<条码>目标[] row,因此,他们都以同样的提法执行,即不论增长价值如何。你们需要简单地分配内部变量,以确保每个代表都能得到独特的参考。

 foreach (object[] row in user_ids)
 {
    var innerReference = row;
    Console.WriteLine(innerReference[0].ToString() + ":" + innerReference[1].ToString());
    ThreadStart starter = delegate { Functions.UpdateFor(innerReference[0].ToString(), innerReference[1].ToString()); };
    new Thread(starter).Start();
 }

友情链接