ListBox在WPF上工作但在Silverlight上没有

I've got a style:

我有一个风格:

<Style x:Key="StarPathStyle" TargetType="Path">
            <Setter Property="StrokeThickness" Value="1"/>
            <Setter Property="Stroke" Value="#FF000080"/>
            <Setter Property="StrokeStartLineCap" Value="Round"/>
            <Setter Property="StrokeEndLineCap" Value="Round"/>
            <Setter Property="StrokeLineJoin" Value="Round"/>
            <Setter Property="StrokeMiterLimit" Value="1"/>     
            <Setter Property="Data" Value="F1 M 145.637,174.227L 127.619,110.39L 180.809,70.7577L 114.528,68.1664L 93.2725,5.33333L 70.3262,67.569L 4,68.3681L 56.0988,109.423L 36.3629,172.75L 91.508,135.888L 145.637,174.227 Z"/>
            <Setter Property="Fill" Value="#FFFFFF00">
        </Setter>
    </Style>
<Style x:Key="Sta