entity-framework-4

I am just learning the Entity Framework and have made some good progress on incorporating it with my layered code structure. I have 2 visual layers, a business layer and a data access layer. My problem is in passing entity object between layers. This code sample does not work: // BLL public static void Test1() { List<User> users = (from u in GetActiveUsers() where u.ID == 1 select u).ToList<User>(); // Do something with users } // DAL public static IQueryable<User> GetActiveUsers() { using (var context = new CSEntities()) { return from u in context.Users where u.Employee.FirstName == "Tom"

I am using EF4 in my application and I want to make test cases for DAL methods, which generally hit the database to get data. I am using the Typemock framework for Mocking. I want to mock database call and only want to test queries. E.g.: ObjectContext.Where(u => u.code == Code) For doing this, I need to make Fake ObjectContext for EF Models and want to fill some fake data in Fake ObjectContext so that we can execute our queries (LINQ) on fake ObjectContext . Kindly suggest how can I can create fake object context(Using TypeMock framework) and fill data in the entities. For example, I have the

This question already has answers here : Like Operator in Entity Framework? (10 answers) Closed 8 months ago . I' m using this instruction: db_user = db.CBR_User.FirstOrDefault(p => p.Codice_Fiscale == code); I want use "like" operator instead == for manage case insensitive How can do it? thanks If you want to do an equality comparison anyway, I suggest two ways: db_user = db.CBR_User.FirstOrDefault(p => p.Codice_Fiscale.Equals(code, StringComparison.OrdinalIgnoreCase)); Or db_user = db.CBR_User.FirstOrDefault(p => p.Codice_Fiscale.ToUpper() == code.ToUpper()); If you don't want that, you can

I'm trying to get a function import to work correctly. EF calls out to my stored procedure, but the result has an inner exception that I don't understand: var result = context.SomeFunctionImport(); I get: The 'Cnt' property on 'SomeClass' could not be set to a 'Double' value. You must set this property to a non-null value of type 'Decimal'. Here's the Cnt property on SomeClass : [DataMember] public Nullable<decimal> Cnt { get { return _cnt; } set { if (_cnt != value) { OnComplexPropertyChanging(); _cnt = value; OnPropertyChanged("Cnt"); } } } private Nullable<decimal> _cnt; You need to define

I am working on a WCF service to provide data to multiple mobile clients. Data model is Entity Framework 4.0. Schema is given below. When i returnt he object of SysUser the result also contains the navigation properties and EntityKey and other EF related stuff. Is it possible that i get the pure object(only the database fields without the relationship etc). Thanks Update the exception occures "Only parameterless constructors and initializers are supported in LINQ to Entities." on followign code: return (from u in DataSource.SysUsers where u.UserID == UserID select new Player(u) )

I'm using MySQL in combination with an edmx file. I'm facing a problem when adding a function to stored procedure. When I select "complex type" and press the "get column information" button I receive the following message: "The selected stored procedure returns no columns." When I create the same procedure in SQL Server and then added the function to a new edmx file, its creating the complex type perfectly. Thanks, Nauman 来源： https://stackoverflow.com/questions/9940749/entity-framework-with-mysql-return-no-column-in-complex-entity-return-type

Currently I am updating the scalar properties of the candidate object like so: public Candidate EditCandidate(Candidate candidateToEdit) { _entities.Candidates.Attach(new Candidate { ID = candidateToEdit.ID }); _entities.Candidates.ApplyCurrentValues(candidateToEdit); //update candidate.contact here somehow _entities.SaveChanges(); return candidateToEdit; } This only updates the Candidate scalars, since that's what ApplyCurrentValues does. I also need to update the candidate.contact object as well, currently it seems like the only option is to get the current candidate in the database via the

I'm trying to streamline my existing repos by using a generic repo I can subclass from. The problem is that I can't figure out how to write a few of my base class methods. I currently have: public interface IRepository<T> : IDisposable where T : class { IQueryable<T> GetAll(); T GetSingle(int id); T GetSingle(string slug); void Save(T entity); } public class HGRepository<T> : IRepository<T> where T : class { protected HGEntities _siteDB; protected IObjectSet<T> _objectSet; public HGRepository(HGEntities context) { _siteDB = context; _objectSet = _siteDB.CreateObjectSet<T>(); } public