#entity-framework-4.1

How to: Entity Framework Code First – two Foreign Keys from same table

Entity Framework Code First – two Foreign Keys from same table

I’ve just started using EF code first, so I’m 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 model, so I started coding:

public class Team { [Key] public int TeamId { get; set;} public string Name { get; set; } public…

How to: What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First?

What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First?

The virtual keyword has an effect when used on properties in EF Code First. Can someone describe all its ramifications in different situations?

For instance, I know it can control lazy loadingif you use the virtual keyword on an ICollection/one-to-many relationship property, it will be lazy-loaded by default,…

Getting exact error type in from DbValidationException

I have the situation where I’m initializing my model in DatabaseInitializer() for EF 4.1 and get this annoying error "Validation failed for one or more entities. See 'EntityValidationErrors' property for more details." So, I go to this EntityValidationErrors and there is a field {System.Data.Entity.Validation.DbEntityValidationResult}which…

How to: Validation failed for one or more entities. See 'EntityValidationErrors' property for more details

Validation failed for one or more entities. See ‘EntityValidationErrors’ property for more details

I am having this error when seeding my database with code first approach.

Validation failed for one or more entities. See ‘EntityValidationErrors’ property for more details.

To be honest I dont know how to check the content of the validation errors, Visual Studio shows me that its an array with 8…