Most of the answers so far seem to discuss splitting EDMX into parts. From your question, it sounds like you want to split the generated classes into separate files. This is not currently supported, but you can do this using T4 templates with EF in 4.0. You can already do this using Damien Guard L2ST4 templates for LINQ to SQL.
Jim wooley
www.ThinqLinq.com
source
share