In Entity Framework code-first, if you have a domain model like the following: [crayon-582b152280188265428148/] and want to create an index for a string property, when you execute update-adtabase for your migration, you may end up with the following error: This usually happens when you use VARCHAR(max) which is the default column type when ...

In my lastest project implemented with EF 3.5 and ADO.NET Data Services, there was a constant need to geting entity objects from DB by ID(…). This generic routine retrieves an object (of the generated DataServiceContext types) by its respective Id of int, double, decimal, or Guid: public static T GetById(this DataServiceContext ctx, U id) ...