不是的MouseUp射击孩子StackPanels(MouseUp not firing on ch

我似乎无法找到一种方法来实现水木清华很简单：

我有一个ItemsControl一个UniformGrid它的内部，即通过安排项目DataTemplate ：

<ItemsControl ItemTemplate="{StaticResource ResourceKey=tmMapCell}"  
        MouseUp="wpSubMap_MouseUp" BorderThickness="1" BorderBrush="DarkGray">
    <ItemsControl.ItemsPanel>
        <ItemsPanelTemplate>
            <UniformGrid Columns="8" Rows="6" />
        </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>
</ItemsControl>

这里的电池模板：

<DataTemplate x:Key="tmMapCell">
    <Border BorderBrush="DimGray" BorderThickness="1" Margin="1" Background="Gainsboro" Visibility="{Binding Path=vMapCell}" >
        <StackPanel VerticalAlignment="Center">
            <TextBlock Margin="2,4,2,2" TextAlignment="Center" Text="{Binding Path=sCell0}" FontWeight="Bold" />
            <StackPanel>
                <StackPanel.Background><SolidColorBrush Color="{Binding Path=cColorB}" /></StackPanel.Background>
                <TextBlock Margin="2,1,2,0" TextAlignment="Center" Text="{Binding Path=sCell1}" FontWeight="{Binding Path=fntWt}">
                    <TextBlock.Foreground><SolidColorBrush Color="{Binding Path=cColorF}" /></TextBlock.Foreground>
                </TextBlock>
                <TextBlock Margin="2,1,2,0" TextAlignment="Center" Text="{Binding Path=sCell2}" FontWeight="{Binding Path=fntWt}">
                    <TextBlock.Foreground><SolidColorBrush Color="{Binding Path=cColorF}" /></TextBlock.Foreground>
                </TextBlock>
            </StackPanel>
            <TextBlock Margin="2" TextAlignment="Center" FontWeight="Normal" Text="{Binding Path=tElapsed, StringFormat='HH:mm:ss'}"></TextBlock>
            <StackPanel Margin="0" *MouseUp*="Svc_MouseUp" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Bottom" Background="White" Visibility="{Binding Path=vSvcs}">
                <Border BorderBrush="DimGray" BorderThickness="1" Margin="2,2,0,2">
                    <StackPanel Name="spSvcGrn" *MouseUp*="Svc_MouseUp">
                        <TextBlock Name="txSvcGrn" Height="14" Width="16" TextAlignment="Center" FontWeight="Normal" Text="{Binding Path=sSvc1}" Background="Lime" Visibility="{Binding Path=vSvc1}" />
                    </StackPanel>
                </Border>
                <Border BorderBrush="DimGray" BorderThickness="1" Margin="2,2,0,2">
                    <StackPanel Name="spSvcOra" *MouseUp*="Svc_MouseUp">
                        <TextBlock Name="txSvcOra" Height="14" Width="16" TextAlignment="Center" FontWeight="Normal" Text="{Binding Path=sSvc2}" Background="Orange" Visibility="{Binding Path=vSvc2}" />
                    </StackPanel>
                </Border>
                <Border BorderBrush="DimGray" BorderThickness="1" Margin="2,2,2,2">
                    <StackPanel Name="spSvcYel" *MouseUp*="Svc_MouseUp">
                        <TextBlock Name="txSvcYel" Height="14" Width="16" TextAlignment="Center" FontWeight="Normal" Text="{Binding Path=sSvc3}" Background="Yellow" Visibility="{Binding Path=vSvc3}" />
                    </StackPanel>
                </Border>
            </StackPanel>
        </StackPanel>
    </Border>
</DataTemplate>

这导致一个很好的布局，根据信息填充细胞，从DB（显示左上角）来：

我需要每个单元（在G，O，Y突出显示）内的小方块陷阱点击。我已经有一个整体的MouseUp处理程序ItemsControl （ wpSubMap_MouseUp ），它处理的细胞点击自己和正常工作。我想新的处理程序添加到单个细胞的项目，而这也正是一切都停止工作：

如果我只留下Svc_MouseUp -对于外部StackPanel ，周围所有的广场，它每次火灾; 但问题是检测到，该方实际上点击。

如果我启用Svc_MouseUp -为内StackPanels ，包装个人广场，他们不火都！？

PS两者的MouseUp处理程序使用下面的模式来防止重入：

private void    Svc_MouseUp( object sender, MouseButtonEventArgs e )
{
    if(  bMouseUp  )    return;

    Cursor  cur=    this.Cursor;

    try
    {
        this.Cursor=    Cursors.Wait;
        bMouseUp=   true;

        ..  /// do smth useful
    }
    finally
    {
        e.Handled=  true;
        bMouseUp=   false;
        this.Cursor=    cur;
    }
}

我缺少的是在这里吗？是什么让处理器射击行为内如此不同StackPanels ？
而我应该如何有效地实现碰撞检测的内部StackPanels ？