WPF到silverlight的转换

Question

有没有办法像WPF那样在Silverlight中支持{x:Type}和{x:Static}？

<Style TargetType="{x:Type TextBox}"> 
            <Style.Triggers> 
                <DataTrigger Binding="{Binding MyTextProperty}" Value="{x:Null}"> 
                    <Setter Property="Text" Value="test!" /> 
                    <Setter Property="Foreground" Value="Red" /> 
                </DataTrigger> 
            </Style.Triggers> 
        </Style>