Silverlight 4 custom control child items style

I have custom control where i want to show some items. In generic.xaml defined style for custom control:

  <Style TargetType="local:Custom">
    <Setter Property="Template">
        <Setter.Value&开发者_开发知识库gt;
            <ControlTemplate TargetType="local:Customl">
                <!-- Root Grid-->
                <Grid x:Name="CustomLayout"
                      Background="Black">
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

And i set to C#

  [TemplatePart(Name = "CustomLayout", Type = typeof(Grid))]
[StyleTypedProperty(Property = "ChildItemStyle", StyleTargetType = typeof(Control))]
public class GaugeControl : Control

Everything working fine excepts style for child items defined in generic.xaml:

  <Style TargetType="{x:Type Control}">
    <Setter Property="Background" Value="Red"></Setter>
        <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Control}">
                <!-- Root Grid-->
                <Grid x:Name="LayoutRoot"
                      Background="Red">
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Custom control with attribute

 [StyleTypedProperty(Property = "ChildItemStyle", StyleTargetType = typeof(Control))]

And i have ChildItemStyle DependencyProperty in my custom control but its always null.

How can i get this Style property and whats wrong i am doing?

---

I found solution and bug in my code.

I just add setter to my <Style TargetType="local:Custom"> definition and with help of setter set ChildItemStyle which i want.