Draw railway using Graphics GDI+

[C# Programming]

Hello

I'm trying to find some idea / method to draw railway pattern using Graphics gdi+

Google map gives a example to do some, I do not need to do exactly the same but something that can looks like a railway

The source information is an array of PointF

I'd a look on Pen.CompoundArray but I do not understand how it works from an atrray of PointF

Thanks for any help / suggestion