uploading image to local folder and retrieving in silverlight using mvvm (nothing in code behind)

Hi

i am very new to silverlight ,mvvm.

i am trying to upload an image using silverlight...it is ok with code behind..it is uploading and displaying in control

but my problem is with mvvm pattern..

i am succesfully uploading the image but it is not displaying in the image control(binding in xaml)...and i need to store the local folder path in database(sql)

i tried all the articles from the net ,, so there is nothing helpful for me 

its for with  a demo....

thanks