将网格控件中的多边形居中

Question

谁能告诉我如何在Grid控件的给定行/列中居中多边形对象？

我尝试过的例子来自msdn.

<Grid x:Name="LayoutRoot" >
  <Polygon Points="300,200 400,125 400,275 300,200" 
           Stroke="Purple" 
           StrokeThickness="2"
           HorizontalAlignment="Center"
           VerticalAlignment="Center" >
    <Polygon.Fill>
        <SolidColorBrush Color="Blue" Opacity="0.4" />
    </Polygon.Fill>
 </Polygon>

干杯,

XAM

Answer 1

添加属性：-

 HorizontalAlignment="Center" VerticalAlignment="Center"

到Polygon.