将文本块更新为 WPF 中变量的值

Question

编辑：我想将文本块的值更新为在另一个类上定期生成的随机变量的值。

我的实现阻止了应用程序中的其他功能（按钮）。有什么建议吗？

   public partial class MainWindow : Window
{
    TaskViewModel viewModel = new TaskViewModel();

    public MainWindow()
    {
        this.DataContext = viewModel;
        InitializeComponent();
        Server_V2.AsyncService.runMain();
        DisplayAV();
    }

    //Display Availability
    private async void DisplayAV() {
        while (true) {
            //availabilityField.Text = Server_V2.AV.ToString();
            viewModel.Availability = Server_V2.AV.ToString();
            await Task.Delay(500);
        }
    }

    public class TaskViewModel : INotifyPropertyChanged
    {
        private string availabilty = "0";
        public string Availability
        {
            get { return availabilty; }
            set { availabilty = value; OnStaticPropertyChanged();}
        }
        public event PropertyChangedEventHandler PropertyChanged;
        public void OnStaticPropertyChanged([CallerMemberName] string PropertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(PropertyName));
        }
    }

Answer 1

您应该使用后台工作人员。你的异步代码仍然在主线程上运行。

像这样……

    BackgroundWorker worker = new BackgroundWorker();
    public MainWindow()
    {
        this.DataContext = viewModel;
        InitializeComponent();
        Server_V2.AsyncService.runMain();
        worker.DoWork += Worker_DoWork;
        worker.RunWorkerAsync();
    }

    private void Worker_DoWork(object sender, DoWorkEventArgs e)
    {
        while (true)
        {
            //availabilityField.Text = Server_V2.AV.ToString();
            viewModel.Availability = Server_V2.AV.ToString();
            Thread.Sleep(500);
        }
    }