How to draw any shape on canvas with image in Wpf

Hello,

I want to draw custom shape in wpf application dynamically.
i have done it on windows application without using WPF in picture box(picturebox1_click event).
but now i want to convert to WPF application.i want make shape  upon image (canvas contains image) after running application
please refer code attached with it.

please provide me the solution.


Thanks
Prashant