WPF：AsyncDemo(简单异步通信Demo)

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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;
using System.Threading.Tasks;
using System.Threading;
using System.Windows.Threading;

namespace AsyncDemo
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        

        public MainWindow()
        {
            InitializeComponent();

            TextBox aa = new TextBox();
            object[] dd = new object[]{};
            //方法一
            aa.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate
            {//这里更新你的集合
                aa.Text = "";
            });
            

        }

        private readonly TaskScheduler _syncContextTaskScheduler = TaskScheduler.FromCurrentSynchronizationContext();

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            TaskThread bb = new TaskThread(textBox1,textBox2,textBox3,_syncContextTaskScheduler);
            Task.Factory.StartNew(bb.Begin);
        }

        private void SchedulerWork()
        {
            Task.Factory.StartNew(Begin, this.textBox1).Wait();
            Task.Factory.StartNew(Begin, this.textBox2).Wait();
            Task.Factory.StartNew(Begin, this.textBox3).Wait();
        }


        private void Begin(object obj)
        {
            TextBox tb = obj as TextBox;
            int i = 100000000;
            while (i>0)
            {
                i--;
             }
            Random random = new Random();
            String Num = random.Next(0,100).ToString();
            Task.Factory.StartNew(() => UpdateTb(tb, Num),
            new CancellationTokenSource().Token, TaskCreationOptions.None, _syncContextTaskScheduler).Wait();
        }

        private void UpdateTb(TextBox tb, string text)
        {
            tb.Text = text;
        }

        public class TaskThread
        {
            private TextBox tb1;
            private TextBox tb2;
            private TextBox tb3;
            private TaskScheduler _syncContextTaskScheduler;


            public TaskThread(TextBox tb1, TextBox tb2, TextBox tb3, TaskScheduler _syncContextTaskSchedule)
            {
                this.tb1 = tb1;
                this.tb2 = tb2;
                this.tb3 = tb3;
                this._syncContextTaskScheduler = _syncContextTaskSchedule;
            }

            public void Begin()
            {
                Random random = new Random();
                String Num = random.Next(0, 100).ToString();
                String Num2 = random.Next(0, 100).ToString();
                String Num3 = random.Next(0, 100).ToString();
                Task.Factory.StartNew(() => UpdateTb(tb1, Num),new CancellationTokenSource().Token, TaskCreationOptions.None, _syncContextTaskScheduler).Wait();
                Task.Factory.StartNew(() => UpdateTb(tb2, Num2), new CancellationTokenSource().Token, TaskCreationOptions.None, _syncContextTaskScheduler).Wait();
                Task.Factory.StartNew(() => UpdateTb(tb3, Num3), new CancellationTokenSource().Token, TaskCreationOptions.None, _syncContextTaskScheduler).Wait();
            }
            private void UpdateTb(TextBox tb, string text)
            {
                tb.Text = text;
            }
        }

        private void button2_Click(object sender, RoutedEventArgs e)
        {
            /*binding方法直接更新
            ViewModel zz = new ViewModel();
            this.groupBox2.DataContext = zz;
            zz.TextBox1 = "1";
            zz.TextBox2 = "2";
            zz.TextBox3 = "3";*/

            //binding方法异步更新
            ViewModel zz = new ViewModel();
            this.groupBox2.DataContext = zz;
            TaskThread2 bb = new TaskThread2(zz, _syncContextTaskScheduler);
            Task.Factory.StartNew(bb.Begin);
        }


        public class TaskThread2
        {
            private ViewModel tb1;
            private TaskScheduler _syncContextTaskScheduler;

            public TaskThread2(ViewModel tb1, TaskScheduler _syncContextTaskSchedule)
            {
                this.tb1 = tb1;
                this._syncContextTaskScheduler = _syncContextTaskSchedule;
            }

            public void Begin()
            {
                Task.Factory.StartNew(() => UpdateTb(tb1), new CancellationTokenSource().Token, TaskCreationOptions.None, _syncContextTaskScheduler).Wait();
            }
            private void UpdateTb(ViewModel tb)
            {
                Random random = new Random();
                String Num = random.Next(0, 100).ToString();
                String Num2 = random.Next(0, 100).ToString();
                String Num3 = random.Next(0, 100).ToString();
                tb.TextBox1 = Num;
                tb.TextBox2 = Num2;
                tb.TextBox3 = Num3;

            }
        }

        private void button3_Click(object sender, RoutedEventArgs e)
        {
            //复杂UI更新
            ViewModel2 zz = new ViewModel2();
            this.groupBox3.DataContext = zz;
            TaskThread3 bb = new TaskThread3(zz);
            Task.Factory.StartNew(bb.Begin);
        }

        public class TaskThread3
        {
            private ViewModel2 tb1;

            public TaskThread3(ViewModel2 tb1)
            {
                this.tb1 = tb1;
            }

            public void Begin()
            {
                Random random = new Random();
                String Num = random.Next(0, 100).ToString();
                String Num2 = random.Next(0, 100).ToString();
                String Num3 = random.Next(0, 100).ToString();
                tb1.TextBox1 = Num;
                tb1.TextBox2 = Num2;
                tb1.TextBox3 = Num3;
            }
        }


    }
}