如何从windows应用商店应用程序中的代码隐藏绑定到c#中的自定义附加属性？

我有一个我定义的附加属性

namespace Controls
{
public class StateManager : DependencyObject
{
    public static string GetVisualState(DependencyObject obj)
    {
        return (string)obj.GetValue(VisualStateProperty);
    }

    public static void SetVisualState(DependencyObject obj, string value)
    {
        obj.SetValue(VisualStateProperty, value);
    }

    // Using a DependencyProperty as the backing store for VisualStateProperty.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty VisualStateProperty =
        DependencyProperty.RegisterAttached("VisualState", typeof(string), typeof(StateManager),
        new PropertyMetadata(null,
            (s, e) => {
                var stateName = (string)e.NewValue;
                var ctrl = s as Control;
                if (ctrl == null) throw new InvalidCastException("You can only attach VisualState properties to Controls");

                if (!string.IsNullOrEmpty(stateName))
                    VisualStateManager.GoToState(ctrl, stateName, true);
            }));
}
}

我可以像这样在XAML中绑定此属性：

<controls:TitleStrip
    controls:StateManager.VisualState=
          "{Binding (controls:StateManager.VisualState), ElementName=pageRoot}" 
    Grid.Column="1"/>

不幸的是，设置绑定的Path属性会引发ArgumentException，声明：“值不在预期范围内。”

---

相反，如果我用“（Grid.Row）”替换我的属性，则不会引发异常。

为了调试这一点，我认为名称空间的语法可能错误，因此在我的xaml参考资料部分中，我添加了以下内容：

<Binding x:Key="yuck" Path="(controls:StateManager.VisualState)" ElementName="pageRoot" />

这看起来很有效，但是为什么我不能从代码隐藏中创建对象呢

更新 这在Windows8应用程序上有效，但现在在UWP上出现错误

为了让它在UWP上工作，我必须将数据绑定到我的父网格的标记

<Grid x:Name="ParentGrid" Tag="{Binding ElementName=pageRoot, Path=(controls:StateManager.VisualState)}">

---

对windows 10的进一步调查表明，如果试图将附加属性Controls.StateManager.VisualState绑定到控件ct上同名的附加属性上，这在C#codebehind中似乎有效：

string bindingxaml =
@"<ResourceDictionary
xmlns:controls=""using:Controls""
xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""
xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""
>
<Binding x:Key=""binding"" Path=""(controls:StateManager.VisualState)"" />
</ResourceDictionary>";

ResourceDictionary dict = XamlReader.Load(bindingxaml) as ResourceDictionary;
Binding binding = dict["binding"] as Binding;
binding.Source = this;
BindingOperations.SetBinding(ct, StateManager.VisualStateProperty, binding);

字符串绑定XAML=
@"
";
ResourceDictionary dict=XamlReader.Load（bindingxaml）作为ResourceDictionary；
绑定=dict[“Binding”]作为绑定；
binding.Source=this；
BindingOperations.SetBinding（ct、StateManager.VisualStateProperty、binding）；

---

奇怪的是，如果您不将其包含在ResourceDictionary中，并尝试将绑定对象创建为唯一的子对象，则会引发异常。

即使这种方法对我也不起作用。在WMC9999中包含一个自定义附加属性的元素。这里似乎有一个更明确的“否”：但我确实找到了另一个临时解决方法。

<Grid x:Name="ParentGrid" Tag="{Binding ElementName=pageRoot, Path=(controls:StateManager.VisualState)}">

var pp3 = new PropertyPath("Tag");
barf = new Binding() { Path = pp3, Source = ParentGrid };

string bindingxaml =
@"<ResourceDictionary
xmlns:controls=""using:Controls""
xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""
xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""
>
<Binding x:Key=""binding"" Path=""(controls:StateManager.VisualState)"" />
</ResourceDictionary>";

ResourceDictionary dict = XamlReader.Load(bindingxaml) as ResourceDictionary;
Binding binding = dict["binding"] as Binding;
binding.Source = this;
BindingOperations.SetBinding(ct, StateManager.VisualStateProperty, binding);