2019年3月20日 星期三

StackTrace 及 執行緒-System.Threading.Timer的使用

https://dotblogs.com.tw/yc421206/2010/10/24/18546

https://dotblogs.com.tw/brooke/2015/10/12/153547

https://ithelp.ithome.com.tw/articles/10195452?sc=rss.qu

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Threading;
using System.Timers;
using System.Windows.Forms;
//匯入命名空間
using ThreadingTimer = System.Threading.Timer;
using TimersTimer = System.Timers.Timer;


namespace ThreadTimer
{
    public partial class Form1 : Form
    {
        //程式開始
        ThreadingTimer _ThreadTimer = null;
        TimersTimer _TimersTimer = null;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Thread t = Thread.CurrentThread;
            bool IsThreadPool = t.IsThreadPoolThread;
            bool IsBackground = t.IsBackground;
            t.Name = "Main Thread";
            string msg = string.Format("Thread[{0}]:{1},Is ThreadPool=[{2}],Is Background=[{3}]", t.ManagedThreadId, t.ThreadState, IsThreadPool, IsBackground);
            this.Text = msg;
         
        }

        private void button2_Click(object sender, EventArgs e)
        {
         
            this._TimersTimer = new TimersTimer();
            this._TimersTimer.Interval = 100;
            this._TimersTimer.Elapsed += new System.Timers.ElapsedEventHandler(_TimersTimer_Elapsed);
            this._TimersTimer.Start();
         
        }
       
        private void _TimersTimer_Elapsed(object sender, ElapsedEventArgs e)
        {
           
            Thread t = Thread.CurrentThread;
            bool IsThreadPool = t.IsThreadPoolThread;
            bool IsBackground = t.IsBackground;
            string msg = string.Format("Thread[{0}]:{1},Is ThreadPool=[{2}],Is Background=[{3}]", t.ManagedThreadId, t.ThreadState, IsThreadPool, IsBackground);
            if (this.listBox2.InvokeRequired)
            {
                listBox2.Invoke(new Action<string>(s => {
                    this.listBox2.Items.Add(s);
                }), msg);
            }
            else
            {
                this.listBox2.Items.Add(msg);

            }
           
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string currentName = new StackTrace(true).GetFrame(0).GetMethod().Name;
            //TimerCallback委派可用來指定 Timer 呼叫的方法, 1.等多久再開始  100.隔多久反覆執行
            this._ThreadTimer = new ThreadingTimer( new System.Threading.TimerCallback(CallbackMethod), currentName, 1, 100);
        }
        void CallbackMethod(object State)
        {
            string methodName = State.ToString();
            Thread t = Thread.CurrentThread;
            bool IsThreadPool = t.IsThreadPoolThread;
            bool IsBackground = t.IsBackground;
            string msg = string.Format("Thread[{0}]:{1},Is ThreadPool=[{2}],Is Background=[{3}]", t.ManagedThreadId, t.ThreadState, IsThreadPool, IsBackground);
            this.BeginInvoke(new UpdateControl(_mUpdateControl), new object[] { this.listBox1, msg });
        }
        delegate void UpdateControl(Control Ctrl, string Msg);
        private object _objLock = new object();
        void _mUpdateControl(Control Ctrl, string Msg)
        {
            //多執行續同時進行時,叫用這個方法時,看有沒有被lock,如有被lock,等他然後再跑裡面的東西
            lock (this._objLock)
            {
                if (Ctrl is ListBox)
                    ((ListBox)Ctrl).Items.Add(Msg);
            }
        }
    }
}

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