在WPF中画一个十字

我有一个 WPF 控件。

I need to have in background a cross, like this:

After that, I'd be able to add other controls over my "crossed" background:

知道当我调整控件大小时，十字应该跟随其大小，我应该如何绘制十字？

快速而肮脏的方法是使用线条并将其坐标绑定到某些父容器的宽度和高度。像这样的事情：

<Grid Name="parent">
    <Line  X1="0" Y1="0" X2="{Binding ElementName='parent', Path='ActualWidth'}" Y2="{Binding ElementName='parent', Path='ActualHeight'}" 
           Stroke="Black" StrokeThickness="4" />
    <Line  X1="0" Y1="{Binding ElementName='parent', Path='ActualHeight'}" X2="{Binding ElementName='parent', Path='ActualWidth'}" Y2="0" Stroke="Black" StrokeThickness="4" />
</Grid>

使用网格作为父级意味着在行之后添加到网格的任何其他子级将显示在行的顶部：

<Grid Name="parent">
    <Line  X1="0" Y1="0" X2="{Binding ElementName='parent', Path='ActualWidth'}" Y2="{Binding ElementName='parent', Path='ActualHeight'}" 
           Stroke="Black" StrokeThickness="4" />
    <Line  X1="0" Y1="{Binding ElementName='parent', Path='ActualHeight'}" X2="{Binding ElementName='parent', Path='ActualWidth'}" Y2="0" Stroke="Black" StrokeThickness="4" />
    <Label Background="Red" VerticalAlignment="Center" HorizontalAlignment="Center">My Label</Label>
</Grid>