Data from multiple tables using RIA Services ??

Hi friends,

I am working on silverlight application and for fetching the data we are using entity framework using RIA services i want to get the data from multiple table but i am able to get the data from multiple table but not able return and bind the data in data grid or any other control. i will appricait if anybody will help me.

I saw the some article but :(

i tried this from this link : http://shubhamohanty.blogspot.in/2010/06/data-from-multiple-tables-in-ria.html

it was good but how can i call to this method and how can i bind the data please help me. I am waiting for reply.

Thanks in Advance 

Shaikh Mohammad Shairque