向通过DataTemplate绑定到WPF应用程序中的UI的类添加动态属性(特定于实例的动态属性)

public static class DynamicProperties
{
    public static readonly DependencyProperty MyDynamicPropertyProperty =
        DependencyProperty.RegisterAttached("MyDynamicProperty", typeof(string), typeof(DynamicProperties), new PropertyMetadata(null));

    public static void SetMyDynamicProperty(UIElement element, string value)
    {
        element.SetValue(MyDynamicPropertyProperty, value);
    }

    public static string GetMyDynamicProperty(UIElement element)
    {
        return (string)element.GetValue(MyDynamicPropertyProperty);
    }
}

<Window x:Class="MyApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:MyApp"
        Title="MainWindow" Height="450" Width="800">
    <Window.Resources>
        <DataTemplate DataType="{x:Type local:MyClass}">
            <Grid>
                <TextBlock Text="{Binding Name}" />
                <TextBlock Text="{Binding (local:DynamicProperties.MyDynamicProperty)}" />
            </Grid>
        </DataTemplate>
    </Window.Resources>
    
    <Grid>
        <ContentControl Content="{Binding}" local:DynamicProperties.MyDynamicProperty="Dynamic Value" />
    </Grid>
</Window>