我编写了一个WPF应用程序，它允许用户添加和查看需要以批处理模式构建的项目文件列表，然后查看每个文件在逐个构建时的运行时进度。为了简单起见，我保留了两个列表视图，一个显示用户添加的项目列表，第二个显示了一个文件正在构建时的构建进度。两个列表视图都被实现为ObservableCollections。第一个列表视图工作正常，我可以看到它在我添加一个文件时得到更新。然而，第二个列表视图只在文件完成后才显示其构建状态，所以我必须等到项目构建完成后才能看到项目状态，这不是我实现它的方式.在代码中，对于第二个列表视图，我将文件的status属性设置为“Running”，然后调用通知属性更改（“status”）以便在列表视图上更新它（以便用户可以知道正在构建该文件），然后运行命令来构建该文件。在构建完成之后，我将文件的status属性更改为“Completed”，然后再次调用NotifyPropertyChanged（“状态”）。不过，正如我所说，我看到状态了（显示为“已完成”）。（对NotifyPropertyChanged（“status”）的第一次调用什么也不做）我希望在我将状态更改为“Running”后运行NotifyPropertyChanged（“status”）后很快更新ListView，任何帮助都将非常感谢。

namespace Names { 
    public partial class MainWindow : Window 
    { 
    public ObservableCollection<projectRecord> records;
    public ObservableCollection<projectStatus> statusrecords;
    public MainWindow()
    {
        InitializeComponent();
        records = new ObservableCollection<projectRecord>();
        statusrecords = new ObservableCollection<projectStatus>();
        listName.ItemsSource = records;//first listview
        statusList.ItemsSource = statusrecords;//second listview
    }

    public class projectRecord : INotifyPropertyChanged
    {
        //some properties
        public string lblProjectName { get; set; }
        
        //some methods 
        public event PropertyChangedEventHandler PropertyChanged;
        public void NotifyPropertyChanged(String propertyName)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (null != handler)
            {
                handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }    

    public class projectStatus : INotifyPropertyChanged
    {
        //some properties
        public string status { get; set; }
        
        //some methods 
        public event PropertyChangedEventHandler PropertyChanged;
        public void NotifyPropertyChanged(String propertyName)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (null != handler)
            {
                handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    } 

    private void ButtonBuild_Click(object sender, RoutedEventArgs e) 
    {
       //fetch project records one by one
       for(i=0;i<records.Count;i++)
        {
          projectRecordName = records[i].lblProjectName; 

          statusrecords.Add(new projectStatus(projectRecordName));

          statusrecords[i].status = "Running";
          statusrecords[i].NotifyPropertyChanged("status");//this does not updates the list view
         
          BuildProjectFile(projectRecordName);

          statusrecords[i].status = "Completed";
          statusrecords[i].NotifyPropertyChanged("status");//this does updates the list view
        }
    }
}

}