Slider（itemsControl）不会更改Int Array中的值

Question

我有一个int数组，正在使用它在ItemsControl中创建一堆滑块。我在滑块上使用双向绑定，但是数组从未设置好（我在设置器上放置了一个断点）。所有这些都在UserControl中。

UserControl XAML：

<ItemsControl ItemsSource="{Binding Values, Mode=TwoWay}">
<ItemsControl.ItemsPanel>
    <ItemsPanelTemplate>
        <StackPanel Orientation="Horizontal" />
    </ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
    <DataTemplate>
        <StackPanel Width="30" MaxWidth="30">
            <Slider Orientation="Vertical" Margin="5,0,0,0"
                                                Value="{Binding Path=., Mode=TwoWay}"
                                                Maximum="100"
                                                Minimum="-100"
                                                Height="100"/>
            <TextBox Text="{Binding Path=., Mode=TwoWay}" Name="NumberTextBox" PreviewTextInput="NumberValidationTextBox"/>
        </StackPanel>
    </DataTemplate>
</ItemsControl.ItemTemplate>

后面的UserControl代码：

    public int[] Values
    {
        get { return (int[])GetValue(ValuesProperty); }
        set { SetValue(ValuesProperty, value); }
    }
    public static readonly DependencyProperty ValuesProperty =
     DependencyProperty.Register("Values", typeof(int[]), typeof(Equalizer), new UIPropertyMetadata(new int[] { 0,0 }));

UserControl是在MainWindow中创建的，并在其中输入了值：

        <local:Equalizer Margin="50" Height="20" Width="100" VerticalAlignment="Top"
                     MyText="{Binding TextData, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:MainWindow}}"
                     MyProperty="True" 
                     MinValue="{Binding MinValue, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:MainWindow}}"
                     MaxValue="{Binding MaxValue, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:MainWindow}}"
                     Values="{Binding Values, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:MainWindow}, Mode=TwoWay}"/>