after draw

[alisonmez]

Regarding Web page: https://developers.arcgis.com/silverlight/guide/using-a-draw-surface.htm
I applied all procedures, red polygon drawn OK, but blue one does not show up on map. API:3.3.

[alisonmez]

I was using Tiled Layers. Using Layers.Insert(0,...) instead of Add(.. corrected the case.