【WPF】Border只显示某一侧的线条

这个功能可以用来实现Grid的分层效果。即在Grid里嵌套多个Border。

四个数分别对应左、上、右、下。

<!--显示左侧的线-->
<Border Grid.Row="0" Grid.ColumnSpan="3" BorderBrush="LightBlue" BorderThickness="1,0,0,0"></Border>

<!--显示右侧的线-->
<Border Grid.Row="0" Grid.ColumnSpan="3" BorderBrush="LightBlue" BorderThickness="0,0,1,0"></Border>

<!--显示上方的线-->
<Border Grid.Row="0" Grid.ColumnSpan="3" BorderBrush="LightBlue" BorderThickness="0,1,0,0"></Border>

<!--显示下方的线-->
<Border Grid.Row="0" Grid.ColumnSpan="3" BorderBrush="LightBlue" BorderThickness="0,0,0,1"></Border>