System.Threading.Timer 使用

//定义计时器执行完成后的回调函数

 TimerCallback timecallback = new TimerCallback(WriteMsg);

//定义计时器

            System.Threading.Timer t = new System.Threading.Timer(timecallback, "Hello Jack", , );

//回调用执行函数

 private delegate void WriteMsgDelegate(object objData);

        private void WriteMsg(object objData)

        {

            if (this.InvokeRequired)

            {

                this.BeginInvoke(new WriteMsgDelegate(WriteMsg), new object[] { objData });

            }

            else

            {

                int a, b;

                ThreadPool.GetAvailableThreads(out a, out b);

                string message = string.Format("{0}\n   CurrentThreadId is:{1}\n" +

                                                                        "   CurrentThread IsBackground:{2}\n" +

                                                                        "   WorkerThreads is:{3}\n   CompletionPortThreads is:{4}\n",

                                                                         objData + "Time now is " + DateTime.Now.ToLongTimeString(),

                                                                         Thread.CurrentThread.ManagedThreadId,

                                                                         Thread.CurrentThread.IsBackground.ToString(),

                                                                         a.ToString(), b.ToString());

                richTextBox1.AppendText(message + "\r\n");

            }

        }

System.Threading.Timer 使用的相关教程结束。