entity-framework-4.1

My Model: public class Country { public int CountryId { get; set; } public string Name { get; set; } public virtual ICollection<User> Users { get; set; } } public class Location { public string Address { get; set; } public virtual int CountryId { get; set; } public virtual Country Country { get; set; } } public class User{ protected User() { Location = new Location(); } public int UserId { get; set; } public Location Location { get; set; } } When generating the database, I get: One or more validation errors were detected during model generation: System.Data.Edm.EdmEntityType: : EntityType

I am using the entity framework and modelling a many-to-many relationship. I have created the relationship between the two entities using the fluent API (let's say users and groups): this.HasMany(t => t.Users) .WithMany(t => t.Groups) .Map( m => { m.ToTable("GroupMembers"); m.MapLeftKey("Group_Id"); m.MapRightKey("User_Id"); }); This works great, but I'd like to also be able to reference the GroupMembers table directly. To do that, I have something like: [Table("GroupMembers")] public class GroupMember { #region Properties /// <summary> /// Gets or sets the group. /// </summary> public virtual

I'm trying to setup an 'Authorization' Filter on an Action, creating my own ActionFilterAttribute where I do a database lookup to determine if a user has access to a certain resource. On my class inheriting from ActionFilterAttribute, I have created an Injected(Ninject) property to hold the service that I am using for the database access. I have a parameterless constructor so that I can use this as an attribute on my actions. In the 'OnActionExecuting' Method, I am able to gain access to the Injected property (it's not null), but the base DBCotext that it is using is closed. This working fine,

This is driving me crazy. I am getting error that object doesn't contain definition for DeleteObject. Here is my line of code that produces an error: ctx.Tanks.DeleteObject(Tank); I tried to reference another object from another edmx file that my friend has created and then everything is fine, DeleteObject exists. I don't think I miss any references in my project. And project itself contains edmx file and I used DBContext to create POCOs. Any ideas? The DbContext API defines DbSet s not ObjectSet s. DbSet has a Remove method not DeleteObject method. You need to first decide which API you are

I have to admit, the features of EF 4.1 RC Codefirst, DataAnnotations and FluentAPI are still overwhelming to me. Sometimes I really don't know what I am doing ;-) Please see the following POCOs: public class Country { [Key] public Guid ID { get; set; } [Required] public virtual Currency Currency { get; set; } } public class Currency { [Key] public Guid ID { get; set; } public virtual ICollection<Country> Countries { get; set; } } The general idea: Every country needs to have a currency. But a currency does not need to be assigned to a country at all. If you let EF create the corresponding

Does anyone know why I am getting this error: The model item passed into the dictionary is of type system.Data.Entity.DynamicProxies.Object_3E186F803589BF82895B10E08C 2A9AB68EFA619599418D6EB96585D14874CDC0', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[MyApplication.Domain.Entities.Object]'. Here is my code: Controller: public ViewResult Index() { if (User.Identity.IsAuthenticated) { MembershipUser currentUser = Membership.GetUser(); Guid currentUserId = (Guid)currentUser.ProviderUserKey; if (currentUser != null && currentUser.ProviderUserKey !=