WPF 从 BackgroundWorker 更新进度条的最佳点

一篇关于在WPF中使用BackgroundWorker更新进度条的最佳实践的文章，并附带案例代码。

csharp
BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += Worker_DoWork;
worker.ProgressChanged += Worker_ProgressChanged;
worker.WorkerReportsProgress = true;

csharp
private void Worker_DoWork(object sender, DoWorkEventArgs e)
{
    // 执行耗时操作
    for (int i = 0; i <= 100; i++)
    {
        // 模拟耗时操作
        Thread.Sleep(100);
        
        // 更新进度条
        worker.ReportProgress(i);
    }
}

csharp
private void Worker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    // 更新进度条的值
    progressBar.Value = e.ProgressPercentage;
}

csharp
public partial class MainWindow : Window
{
    private BackgroundWorker worker;
    public MainWindow()
    {
        InitializeComponent();
        
        worker = new BackgroundWorker();
        worker.DoWork += Worker_DoWork;
        worker.ProgressChanged += Worker_ProgressChanged;
        worker.WorkerReportsProgress = true;
    }
    private void StartButton_Click(object sender, RoutedEventArgs e)
    {
        // 启动后台操作
        worker.RunWorkerAsync();
    }
    private void Worker_DoWork(object sender, DoWorkEventArgs e)
    {
        // 执行耗时操作
        for (int i = 0; i <= 100; i++)
        {
            // 模拟耗时操作
            Thread.Sleep(100);
            
            // 更新进度条
            worker.ReportProgress(i);
        }
    }
    private void Worker_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        // 更新进度条的值
        progressBar.Value = e.ProgressPercentage;
    }
}