I HATE WRITEABLEBITMAP

I try to explain better with an image

This function is last one of mine project, i created a mixed XNA-Silverlight application, in about a week i have created all the game, (the board, the sprites animation, music, effects and so on...) and now in two days i'm not able to draw a bitmap and convert it into a byte array...it's incredible! :'(

I have to try to workaround the problem, i need to take a screenshot of my xna game board and store it into a database field...

Is there another way to do that?

tnx a lot

Daniele