EF5, Data Annotations, Namespaces and Targeted .NET Versions

FIrst, be sure to read my post “When is EF5 not EF5” so you understand the basis for this post.

When you use EF5, regardless of targeting .NET 4 or .NET 4.5, you’ll find the special EF related data annotations (such as MaxLength and NotMapped) in the System.ComponentModel.DataAnnotations.Schema namespace.

In EF4, they were in System.ComponentModel.DataAnnotations namespace