Microsoft.AspNet.Identity: UserID用整型数据表示, 而不是GUID

第一篇:  这个好像不太好

http://stackoverflow.com/questions/19553424/how-to-change-type-of-id-in-microsoft-aspnet-identity-entityframework-identityus

第二篇:

http://www.asp.net/identity/overview/extensibility/change-primary-key-for-users-in-aspnet-identity