如何使用与OnPropertyChanged一起使用的UserControl的可绑定属性

public partial class MyUserControl : UserControl
{
    public static readonly DependencyProperty MyPropertyProperty =
        DependencyProperty.Register("MyProperty", typeof(string), typeof(MyUserControl), new PropertyMetadata(null, OnMyPropertyChanged));

    public string MyProperty
    {
        get { return (string)GetValue(MyPropertyProperty); }
        set { SetValue(MyPropertyProperty, value); }
    }

    private static void OnMyPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        MyUserControl control = d as MyUserControl;
        control.OnPropertyChanged("MyProperty");
    }

    protected virtual void OnPropertyChanged(string propertyName)
    {
        // 在此处处理属性变化事件
    }
}

<UserControl x:Class="MyNamespace.MyUserControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             mc:Ignorable="d"
             d:DesignHeight="300" d:DesignWidth="300">
    <Grid>
        <TextBlock Text="{Binding MyProperty, RelativeSource={RelativeSource AncestorType=UserControl}}" />
    </Grid>
</UserControl>

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:my="clr-namespace:MyNamespace"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <my:MyUserControl MyProperty="{Binding MyDataProperty}" />
    </Grid>
</Window>