public class Printer{
        public string Name { get; set; } //打印机名称
        public int Connecttime { get; set; } //超时时间
        public string IP { get; set; } //打印机IP
        public string Status{get;set;} //打印机状态 需要更新回主界面
        public bool Open(){} //打开打印机
        public bool Close(){} //关闭打印机
        public bool Write(string strdata){} //打印机写内容
}
 

  List<Printer> printers = new List<Printer>();

        private void Form1_Load(object sender, EventArgs e)
        {
         // 另外有一张表维护了所有打印机的信息 
            printers.Add(xxxx);
         //

          // 然后针对每个打印机开个线程
          foreach (Printer p in printers) //循环所有打印机
            {
               //这里创建线程

             }           
        }
 

class Program
    {


        /// <summary>
        /// 打印任务管理类
        /// </summary>
        public class JobManager
        {
             
            public delegate void JobHasGotDel(object sender, JobManagerEventArgs e);//取到打印任务委托
            public event JobHasGotDel JobHasGot;//取到打印任务事件

            private int _printtimes = 5;//打印机数量


            public void StartGetJob(int printtimes)
            {
                this._printtimes = printtimes;
                Thread getjobthread = new Thread(new ParameterizedThreadStart(GetJobProc));
                getjobthread.Start();
            }

            private void GetJobProc(object obj)//取打印任务线程
            {
                while (true)
                {
                    Random ran = new Random();
                    int rantime = ran.Next(5000);
                    Thread.Sleep(rantime);//模拟取打印任务时间消耗
                    jobqueue.Enqueue(new PrintJob("job" + rantime.ToString(), _printtimes));//取到后加入打印任务队列
                    Console.WriteLine("job " + rantime.ToString() + " got!");
                    if (JobHasGot != null)
                        JobHasGot(this, new JobManagerEventArgs(_printtimes));//引发已取到打印任务事件
                }

            }

           
        }
        /// <summary>
        /// 打印任务管理参数类
        /// </summary>
        public class JobManagerEventArgs : EventArgs
        {
            private int _printtimes;//打印次数/打