<Window x:Class="LshBackgroundWorkerDemo.MainWindow"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        Title="BackgroundWorkerDemo" Width="800" Height="270"  Loaded="Window_Loaded">    <ScrollViewer  VerticalScrollBarVisibility="Auto">    <StackPanel>                <WrapPanel>            <Button Name="btnStartThread"  Content="启动线程" Click="btnStartThread_Click"/>            <Button Name="btnPauseThread"  Content="暂停线程" Click="btnPauseThread_Click"/>            <Button Name="btnContinueThread" Content="恢复线程" Click="btnContinueThread_Click"/>            <Button Name="btnTerminationThread"  Content="终止线程" Click="btnTerminationThread_Click"/>        </WrapPanel>        <WrapPanel  HorizontalAlignment="Center">            <TextBlock Text="数量:" Style="{StaticResource txtBlockSyle}">            </TextBlock>            <TextBox Name="txtNum" Style="{StaticResource txtNum}"></TextBox>        </WrapPanel>        <GroupBox Header="线程状态显示" Margin="10">            <Grid>                <ProgressBar x:Name="progressBar" Height="50"/>                <WrapPanel HorizontalAlignment="Center">                    <TextBlock Text="   已加载:"  Style="{StaticResource txtBlockSyle}" />                    <TextBlock x:Name="txtBlockNum" Text="0%"  Style="{StaticResource txtBlockSyle}"/>                </WrapPanel>            </Grid>        </GroupBox>    </StackPanel>    </ScrollViewer></Window>

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">    <Style TargetType="Button">        <Setter Property="FontSize" Value="http://www.mamicode.com/20"></Setter>        <Setter Property="Margin" Value="http://www.mamicode.com/20" ></Setter>        <Setter Property="Padding" Value="http://www.mamicode.com/10 5 10 5"></Setter>        <Setter Property="Width" Value="http://www.mamicode.com/150"></Setter>        <Setter Property="Background" Value="http://www.mamicode.com/Black"></Setter>          <Setter Property="FontWeight" Value="http://www.mamicode.com/Bold"></Setter>        <Setter Property="Effect">            <Setter.Value>                <DropShadowEffect Color="{DynamicResource {x:Static SystemColors.DesktopColorKey}}"/>            </Setter.Value>        </Setter>        <Setter Property="Foreground">            <Setter.Value>                <LinearGradientBrush EndPoint="0.5,1" MappingMode="RelativeToBoundingBox" StartPoint="0.5,0">                <GradientStop Color="#FFEEF906" Offset="1"/>                <GradientStop Color="#FFDA9D86"/>                </LinearGradientBrush>            </Setter.Value>        </Setter>    </Style>    <Style TargetType="TextBox" x:Key="txtNum">        <Setter Property="Width" Value="http://www.mamicode.com/150"></Setter>        <Setter Property="Height" Value="http://www.mamicode.com/35"></Setter>        <Setter Property="Text" Value="http://www.mamicode.com/10000"></Setter>        <Setter Property="FontSize" Value="http://www.mamicode.com/20"></Setter>    </Style>    <Style TargetType="TextBlock" x:Key="txtBlockSyle">        <Setter Property="Width" Value="http://www.mamicode.com/100"></Setter>        <Setter Property="Height" Value="http://www.mamicode.com/40"></Setter>        <Setter Property="FontSize" Value="http://www.mamicode.com/20"></Setter>        <Setter Property="Padding" Value="http://www.mamicode.com/0 5 0 0"></Setter>        <Setter Property="Margin" Value="http://www.mamicode.com/0 5 0 0"></Setter>    </Style></ResourceDictionary>

using System;using System.Collections.Generic;using System.ComponentModel;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.Text.RegularExpressions;using System.Threading;namespace LshBackgroundWorkerDemo{    /// <summary>    /// MainWindow.xaml 的交互逻辑    /// </summary>    public partial class MainWindow : Window    {        #region 公共变量        //简单线程对象        private BackgroundWorker backgroundWorker;        //指定的操作数量        private int number;        //用该对象控制线程的暂停和继续        private ManualResetEvent manualReset = new ManualResetEvent(true);        #endregion        public MainWindow()        {            InitializeComponent();        }        /// <summary>        /// 启动线程单击事件        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void btnStartThread_Click(object sender, RoutedEventArgs e)        {            //验证用户输入是否正确            if (vili())             {                //初始化所有控件以及数据                int num = int.Parse(txtNum.Text);                number = num;                progressBar.Maximum = num;                progressBar.Minimum = 0;                //启动线程                backgroundWorker.RunWorkerAsync(num);            }                              }        /// <summary>        /// 线程执行函数        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)        {                        for (int i = 0; i <= Convert.ToInt32(e.Argument); i++)            {                //判断用户是否已经取消该线程执行，如果没有则正常执行                if (!backgroundWorker.CancellationPending)                {                    backgroundWorker.ReportProgress(i);                    //等待消息通知，为true则不进行阻塞，false则进行阻塞暂停该线程执行                    manualReset.WaitOne();                    Thread.Sleep(1);                                    }            }                    }        /// <summary>        /// 线程结束回调函数        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)        {           global::System.Windows.MessageBox.Show("结束");                     }        /// <summary>        /// 线程操作数被修改回调函数        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)        {            double baifen = ((double)e.ProgressPercentage / (double)number) * 100;            txtBlockNum.Text = baifen + "%";            progressBar.Value = http://www.mamicode.com/e.ProgressPercentage;"^-?\d+\.?\d*$");            if (!gex.IsMatch(inputTxt))             {                global::System.Windows.MessageBox.Show("文本框内容必须是纯数字!");                return false;            }            return true;        }        /// <summary>        /// 暂停线程        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void btnPauseThread_Click(object sender, RoutedEventArgs e)        {            manualReset.Reset();        }        /// <summary>        /// 窗体加载完成时执行事件绑定        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void Window_Loaded(object sender, RoutedEventArgs e)        {            backgroundWorker = new BackgroundWorker();            backgroundWorker.WorkerReportsProgress = true;            backgroundWorker.WorkerSupportsCancellation = true;            backgroundWorker.DoWork += new DoWorkEventHandler(backgroundWorker_DoWork);            backgroundWorker.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker_ProgressChanged);            backgroundWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker_RunWorkerCompleted);        }        /// <summary>        /// 恢复线程运行        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void btnContinueThread_Click(object sender, RoutedEventArgs e)        {            manualReset.Set();        }        /// <summary>        /// 结束线程        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void btnTerminationThread_Click(object sender, RoutedEventArgs e)        {            backgroundWorker.CancelAsync();            this.Dispatcher.Invoke(new Action(() =>            {                progressBar.Value = http://www.mamicode.com/0;"0%";            }));                   }           }}