Get the related entity crm 2011

I have two entities on the CRM Organization "Template" and "Product" with a relationship 1:N. A "Template" can be related to multiple "Product", I want to get all the "Product" related to a "Template" using C#.

Ex:

Template1 is related to three Products P1,P2 and P3. I want to retrive the P1,P2 and P3 when I retrive the Template1 entity. I want the related entity.

Please provide any guide or link to do this using C#.....

Thanks,

Rohit