TaskBarProgress(任务栏进度条)

 <Window.TaskbarItemInfo>
        <TaskbarItemInfo />
    </Window.TaskbarItemInfo>
    
    <Grid>
        <ProgressBar x:Name="ProgressBar"  Margin="10"
                     HorizontalAlignment="Stretch"
                     VerticalAlignment="Center"
                     Height="23" />
    </Grid>

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            Loaded += new RoutedEventHandler(MainWindow_Loaded);
        }

        void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            //BackgroundWorker,在单独的线程上执行操作
            BackgroundWorker worker = new BackgroundWorker();

            //BW.DoWork,调用BW.RunWorkerAsync()时发生

//初始化命名委托;Lambda 运算符的左边是输入参数（如果有），右边包含表达式或语句块;
            worker.DoWork += (s, ev) =>
                {
                    for (int i = 0; i < 100; i += 10)
                    {
                        Thread.Sleep(1000);

                        //BW.ReportProgress,引发BW.ProgressChanged事件
                        ((BackgroundWorker)s).ReportProgress(i);
                    }
                };
            //调用BW.ReportProgress时发生
            worker.ProgressChanged += new ProgressChangedEventHandler(worker_ProgressChanged);

            //当后台操作已完成，被取消或引发异常时发生
            worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_RunWorkerCompleted);

            //BackgroundWorker.WorkerReportsProgress 获取或设置一个值，该值指示 BackgroundWorker 能否报告进度更新。
            worker.WorkerReportsProgress = true;

            //TaskbarItemInfo获取或设置 System.Windows.Window 的任务栏缩略图。
//TaskbarItemInfo.ProgressState 获取或设置一个值，该值指示在任务栏按钮中显示进度指示器的方式。

            TaskbarItemInfo.ProgressState = TaskbarItemProgressState.Indeterminate;

             //TaskbarItemProgressState枚举值
//None=0,Indeterminate=1(闪烁绿色),Normal=2(绿色),Error=3(红色),Paused=4(黄色)

//开始执行后台操作
            worker.RunWorkerAsync();

        }


        void worker_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            //ProgressChangedEventArgs.ProgressPercentage 获取异步任务的进度百分比
            ProgressBar.Value = e.ProgressPercentage;

            // double TaskbarItemInfo.ProgressValue获取或设置一个值，该值指示任务栏按钮中进度指示器的填满状态。
            TaskbarItemInfo.ProgressValue = (double)e.ProgressPercentage / 100;
        }

        void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            ProgressBar.Value = 100;
            TaskbarItemInfo.ProgressValue = 1.0;
        }
    }