Attributes from PropertyPath

If i have a PropertyPath, is it possible to get it's attributes? If not, what minimum of info do i need? From the example i need to get SomeAttribute. I need for it my custom binding class.

Eg.

Test.xaml

<TextBox Text={Binding SomeValue}/>

Test.xaml.cs

[SomeAttribute]
public string SomeValu开发者_如何学JAVAe { get; set; }

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By PropertyPath you can take only property or subproperties. Read data binding overview for more information.

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You can get an attribute of bound property with reflection technique.

The following is sample code.

SomeEntity.cs

public class SomeEntity
{
    [SomeAttribute]
    public string SomeValue { get; set; }
}

MainWindow.xaml

<Window x:Class="WpfApplication4.MainWindow" ...>
    <StackPanel>
        <TextBox Name="textBox" Text="{Binding SomeValue}"/>
        <Button Click="Button_Click">Button</Button>
    </StackPanel>
</Window>

MainWindow.xaml.cs

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new SomeEntity();
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        // Get bound object from TextBox.DataContext.
        object obj = this.textBox.DataContext;

        // Get property name from Binding.Path.Path.
        Binding binding = BindingOperations.GetBinding(this.textBox, TextBox.TextProperty);
        string propertyName = binding.Path.Path;

        // Get an attribute of bound property.
        PropertyInfo property = obj.GetType().GetProperty(propertyName);
        object[] attributes = property.GetCustomAttributes(typeof(SomeAttribute), false);
        SomeAttribute attr = (SomeAttribute)attributes[0];
    }
}