Hi,
I'm not sure if I understand your question. Based on the link you given, you want to add a green circle in the right bottom of the image?
If so, you need to create a custom control instead of using border. Create a custom control and put the image in it. Then create the circle as you want and put it above the image at the right bottom.
Best regards,
Roy
MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to
MSDN Support, feel free to contact MSDNFSF@microsoft.com.