c# - wpf polyline data query -

I -> & lt; I am trying to attract the arrow - and in the wpf the arrow down as the button image.

But I could not understand how this polyline is pulling the picture on the button.

Can someone give me polyline dits for all the arrows ??

path tag. Here's a simple arrow:

  & lt; Path stroke = "black" data = "m5 5 l 5 0 10 5 m 5 lll 5 10" />  

Here the data syntax is simple: For M-lineTo there are Moves and L.