wpf – 在某些情况下(使用TranslateTransform时)TemplateBinding不起作用

这就是我在 WPF中重现这个问题的方法：

创建自定义控件：

public class TestCustomControl : Control
{
static TestCustomControl()
{
    DefaultStyleKeyProperty.OverrideMetadata(typeof(TestCustomControl),new FrameworkPropertyMetadata(typeof(TestCustomControl)));
}

public string Text
{
    get { return (string)GetValue(TextProperty); }
    set { SetValue(TextProperty,value); }
}

// Using a DependencyProperty as the backing store for Text.  This enables animation,styling,binding,etc...
public static readonly DependencyProperty TextProperty =
    DependencyProperty.Register("Text",typeof(string),typeof(TestCustomControl),new PropertyMetadata("Hello"));

public double OffSet
{
    get { return (double)GetValue(OffSetProperty); }
    set { SetValue(OffSetProperty,value); }
}

// Using a DependencyProperty as the backing store for OffSet.  This enables animation,etc...
public static readonly DependencyProperty OffSetProperty =
    DependencyProperty.Register("OffSet",typeof(double),new PropertyMetadata(5.0));
}

在Generic.xaml文件中为它添加样式：

<Style targettype="local:TestCustomControl">
<Setter Property="Template">
    <Setter.Value>
        <ControlTemplate targettype="local:TestCustomControl">
            <Grid>
                <TextBlock Text="{TemplateBinding Text}"></TextBlock>
                <TextBlock Text="{TemplateBinding Text}">
                    <TextBlock.RenderTransform>
                        <TranslateTransform X="{TemplateBinding OffSet}" Y="{TemplateBinding OffSet}"/>
                        <!--<TranslateTransform X="10" Y="10"/>-->
                    </TextBlock.RenderTransform>
                </TextBlock>
            </Grid>
        </ControlTemplate>
    </Setter.Value>
</Setter>

然后将其添加到主窗口：

<local:TestCustomControl OffSet="32" Text="the off set is not working" FontSize="36">

    </local:TestCustomControl>

然后运行应用程序,事实证明“文本”工作正常,但“OffSet”不起作用.
我在Windows Phone 7开发环境中尝试了类似的东西,我得到了相同的结果.

我应该如何修改代码以使OffSet工作？

谢谢

解决方法

尝试：

{Binding Offset,RelativeSource={RelativeSource TemplatedParent}}