The error message : “The model backing the ‘AddressBook’ context has changed since the database was created. Either manually delete/update the database, or call Database.SetInitializer with an IDatabaseInitializer instance. For example, the RecreateDatabaseIfModelChanges strategy will automatically delete and recreate the database, and optionally seed it with new data.” I am trying to use the code-first … Read more
I’ve just started using EF code first, so I’m a total beginner in this topic. I wanted to create relations between Teams and Matches: 1 match = 2 teams (home, guest) and result. I thought it’s easy to create such a model, so I started coding: public class Team { [Key] public int TeamId { … Read more
I want to save my Edit to Database and I am using Entity FrameWork Code-First in ASP.NET MVC 3 / C# but I am getting errors. In my Event class, I have DateTime and TimeSpan datatypes but in my database, I’ve got Date and time respectively. Could this be the reason? How can I cast … Read more
I see this a lot in tutorials, with navigation properties as ICollection<T>. Is this a mandatory requirement for Entity Framework? Can I use IEnumerable? What’s the main purpose of using ICollection instead of IEnumerable or even List<T>? 9 Answers 9
