C# Can'；t通过绑定（WP8）从代码隐藏更新元素的可见性

XAML：

---

当属性发生更改时，必须引发PropertyChanged事件，否则绑定将不会更新。您的

BindingBase

类实现了

INotifyPropertyChanged

，您可以/应该使用它来通知视图

（）

您的财产应如下所示：

public class RegionTree : BindableBase
{
    public bool IsFirstLayer { get; set; }
    public bool IsSecondLayer { get; set; }
    public bool IsThirdLayer { get; set; }
    public Visibility VisibilityOption { get; set; }
    public string Name;
    public string Code;
    public string RUName;
    public string SWNE;
    public string DisplayedName
    {
        get
        {
            if (Thread.CurrentThread.CurrentUICulture.ToString() == "ru-RU" && RUName != null)
            {
                return RUName;
            }
            else { return Name; }
        }
    }
}

---

这不是添加属性的正确方法，您必须使用

OnPropertyChanged（“VisibilityOption”）

才能更新

集中的UI

。只需修改该属性即可。您是否有VisibilityOption属性？@vits，在RegionTree类中？当然更重要的是，若我在默认情况下将其设置为折叠，那个么UI中将不会显示任何内容。问题是，如果我更新这个属性，UI根本不会改变。你能添加你的属性代码吗？@vits，添加了整个类结构。

private void FilterBtn_Click(object sender, RoutedEventArgs e)
    {
        var allRegions = (RegionList.ItemsSource as ObservableCollection<RegionTree>);
        foreach (var region in allRegions)
        {
            if (region.DisplayedName.IndexOf(RegionFilter.Text) >= 0)
            {
                region.VisibilityOption = Visibility.Visible;
            }
            else
            {
                region.VisibilityOption = Visibility.Collapsed;
            }
        }
        RegionList.ItemsSource = allRegions;
    }

public class RegionTree : BindableBase
{
    public bool IsFirstLayer { get; set; }
    public bool IsSecondLayer { get; set; }
    public bool IsThirdLayer { get; set; }
    public Visibility VisibilityOption { get; set; }
    public string Name;
    public string Code;
    public string RUName;
    public string SWNE;
    public string DisplayedName
    {
        get
        {
            if (Thread.CurrentThread.CurrentUICulture.ToString() == "ru-RU" && RUName != null)
            {
                return RUName;
            }
            else { return Name; }
        }
    }
}

public Visibility VisibilityOption
{
  get { return _visibilityOption; }
  set
  {
    if (_visibilityOption != value)
    {
      _visibilityOption = value;
      OnPropertyChanged("VisibilityOption");
    }
  }
}

public Visibility VisibilityOption { get; set; }