using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Linq;

using System.Text;

using System.Threading;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace ThreadExam

{

    /// <summary>

    /// MainWindow.xaml 的交互逻辑

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

        }

        public delegate int AsyncDelegate(int data, int ms);

        static int timeConsumingWork(int data, int ms)

        {

            return ;

        }

        static void workForThread(object data)

        {

            Debug.WriteLine(data);

        }

        static void resultCompleted(IAsyncResult ar)

        {

            int result = (ar.AsyncState as AsyncDelegate).EndInvoke(ar);

            Debug.WriteLine(result);

        }

        private void async_Click(object sender, RoutedEventArgs e)

        {

            Button asyBtn = sender as Button;

            switch (asyBtn.Name)

            {

                case "async1":

                    AsyncDelegate asyDeleg = timeConsumingWork;

                    IAsyncResult ar = asyDeleg.BeginInvoke(, , null, null);

                    while (!ar.IsCompleted)  //一直判断状态

                    {

                        Console.Write(".");

                        Thread.Sleep();

                    }

                    int result = asyDeleg.EndInvoke(ar);

                    Debug.WriteLine(result);

                    break;

                case "async2":

                    AsyncDelegate asyDeleg2 = timeConsumingWork;

                    IAsyncResult ar2 = asyDeleg2.BeginInvoke(, , null, null);

                    while (true)

                    {

                        Console.Write(".");

                        if (ar2.AsyncWaitHandle.WaitOne(, false))  //等待50毫秒后看状态

                        {

                            break;

                        }

                    }

                    int result2 = asyDeleg2.EndInvoke(ar2);

                    Debug.WriteLine(result2);

                    break;

                case "async3":

                    AsyncDelegate asyDeleg3 = timeConsumingWork;

                    asyDeleg3.BeginInvoke(, , resultCompleted, asyDeleg3);

                    break;

                case "thread1":

                    new Thread(workForThread).Start();

                    break;

                case "pool1":

                    for (int i = ; i < ;i++ )

                        ThreadPool.QueueUserWorkItem(workForThread, );

                    break;

            }

        }

    }

}