In Entity Framework 4.1 when creating a开发者_StackOverflow POCO, should the class be coded to initialise the Many relationships or is there some reason to allow the Entity Framework to have control o
I have two classes, the Group class has a many to many relationship with the User class (representing the groups a user belongs to) and then the group also has a relationship of one to many with the u
What is the difference in behavior of [MaxLength] and [StringLength] attributes? As far as I can tell (with the exception that [MaxLength] can validate the maximum length of an arr开发者_JS百科ay) th
As the title implies: how is it possible to tell Entity Framework 4.1 in code first approach, that i do want some properties (in particular of type string) to have a length of 256, or nvarchar(max),
Are there any performanc开发者_StackOverflow中文版e benefits in either of the methods?No. EF 4.1 is just wrapper around EF 4.0 so there is no difference - at least no difference which would make sense
I am trying to use MVC3 with the Entity framework with Code First, but the code Template generation process in MS Visual Web Developer 2010 - is not detecting my Model in the models folder - giving a
I have a 1-1 relationship between Orders and Contact. i.e. Contact.OrderId references Orders and is also a PK.
...because it doesn\'t seem to be in System.Com开发者_运维知识库ponentModel.DataAnnotations!It is in that namespace, but was introduced in Entity Framework 4.1. Have you got that installed, and refere
I am using Entity Framework Code First, and I have an entity defined with a StartTime property, an EndTime property and a Duration property (along with some others).The Duration property is a calculat
I am using EF 4.1 \"code first\" to create my db and objects. Given: public class Order { public int Id { get; set; }
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