entity-framework-4.1

I am using Entity Framework 4.3 code first using an already existing database. There is a Users table that has the following columns: - UserID (int) - FirstName (string) - Surname (string) I have an association table called Impersonations . The Impersonations table is an association table between a user table and the same user table. A user can have a list of users. Here is the Impersonations table structure: - ImpersonateID (int primary key) - UserID (int FK to Users table's UserID column) - ImpersonatedUserID (int FK to Users table's UserID column) I have a User class with properties that I

I have a simple base entity type called EntityBase that implements IEquatable<EntityBase>. I've used this code outside of LINQ to Entities (with EF 4.1) to filter a list of types derived from EntityBase using a predicate where clause that compares the object instances rather than the ID property they inherit from EntityBase. So basically I want to do this: UserAccount account = GetMyNewAccount(); Accounts.Where(item => item == account).SingleOrDefault(); rather than this: UserAccount account = GetMyNewAccount(); Accounts.Where(item => item.Id == account.Id).SingleOrDefault(); Unfortunately, EF

I have a MVC application that uses that entity framework model object directly in the view. I'm not sure how bad of a design pattern this is, but based on this sample I need to use a repository to implement caching. namespace MVCAzureStore.Services.Caching { public class CachedProductsRepository : CachedDataSource, IProductRepository { private readonly IProductRepository repository; public CachedProductsRepository(IProductRepository repository, ObjectCache cacheProvider) : base(cacheProvider, "Products") { this.repository = repository; } public List<string> GetProducts() { return

I am creating an ASP.Net MVC 3 application and I am running into a foreign key constraint problem when trying to update my database using migrations. I am using Code-First, and the error I am getting is: Introducing FOREIGN KEY constraint 'FK_CategoryItemValues_CategoryProperties_CategoryPropertyId' on table 'CategoryItemValues' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints. Could not create constraint. See previous errors. Here are my classes: public class Category { public int Id { get; set; } [Display

I am new to WCF and Entity framework. I have a class library "A" which contains DatabaseEntities.edmx (Entity Framework objectContext ). This library is exposing a class "B" which contains a function FunctionB , internally using the entity objects. I have taken this library "A" reference into a WCF web service and inside the IService.cs - I have coded it like this: [OperationContract] void FunctionB_Proxy(); Without defining any DataContract I have gone into Service1.cs and implemented this function as below: public void FunctionB_Proxy() { ClassB x=new ClassB();//Class of ClassLibrary x