C#中多线程更新UI控件的常用方案

// 假设你有一个Button控件叫myButton
// 从非UI线程更新UI
this.myButton.Invoke((MethodInvoker)delegate
{
    myButton.Text = "Updated Text";
});

// 或者使用BeginInvoke
this.myButton.BeginInvoke((MethodInvoker)delegate
{
    myButton.Text = "Updated Text";
});

// 假设你有一个TextBlock控件叫myTextBlock
// 从非UI线程更新UI
Application.Current.Dispatcher.Invoke(() =>
{
    myTextBlock.Text = "Updated Text";
});

// 或者使用BeginInvoke
Application.Current.Dispatcher.BeginInvoke(new Action(() =>
{
    myTextBlock.Text = "Updated Text";
}));

// WinForms示例
private async void SomeMethod()
{
    // 执行长时间运行的任务
    string result = await Task.Run(() =>
    {
        // 模拟长时间运行的任务
        Thread.Sleep(1000);
        return "Processed Result";
    });

    // 回到UI线程更新UI
    this.myButton.Invoke((MethodInvoker)delegate
    {
        myButton.Text = result;
    });
}

// WPF示例
private async void SomeMethod()
{
    // 执行长时间运行的任务
    string result = await Task.Run(() =>
    {
        // 模拟长时间运行的任务
        Thread.Sleep(1000);
        return "Processed Result";
    });

    // 回到UI线程更新UI
    Application.Current.Dispatcher.Invoke(() =>
    {
        myTextBlock.Text = result;
    });
}

BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += (sender, e) =>
{
    // 执行后台任务
};
worker.RunWorkerCompleted += (sender, e) =>
{
    // 更新UI
    myButton.Text = "Task Completed";
};
worker.RunWorkerAsync();