Wpf 具有依赖项属性的Usercontrol不'；我不认识变化

我有一个自定义类，usercontrol在其代码隐藏中作为依赖项属性实现了该类

public partial class HandControl
{
    public HandControl()
    {
        InitializeComponent();
    }

    public Seat Seat
    {
        get
        {
            return (Seat)GetValue(SeatProperty);
        }
        set
        {
            SetValue(SeatProperty, value);
        }
    }

    public static readonly DependencyProperty SeatProperty = DependencyProperty.Register("Seat", typeof(Seat), typeof(HandControl), new PropertyMetadata(null));
}

在我的例子中，我将该类中的name属性绑定到usercontrols xaml中的标签

<Label Content="{Binding Seat.Player.Name, RelativeSource={RelativeSource AncestorType={x:Type controls:HandControl}}}"/>

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我有什么问题？有人有线索吗？

我想你应该提出关于Seat.Player.Name属性更改的问题，因为它正在被更改。

没错，这是我的问题。我还必须在我的Seat类中实现InotifyProperty更改。

    public Seat SeatTr
    {
        get { return _seatTr; }
        private set
        {
            _seatTr = value;
            OnPropertyChanged();
        }
    }

    <customControls:HandControl Grid.Row="1"
                                Grid.Column="3"
                                Seat="{Binding SeatTr}" />

    private void OnSeatChanged(Player player, SeatPosition seatPosition)
    {
        //... doing the changes ...\\
        OnPropertyChanged("SeatTr");
    }