Add Unique constraint to AspNetUsers.UserName code first with migrations

Question

How can I add a unique contraint to the AspNetUsers.UserName column using Entity Framework migrations? It seems like a jungle to me figuring out how the initial Identity tables are configured.

Answer 1

To make the column unique you can use Data Annotations and the attribute [Index(IsUnique=true)] in your code. Please see this Post by @juFo for more information.