`Attaching an entity of type failed...` exception while trying to update a class in EF and with a generic repository

Generic Entity Framework repository update method

I have a similar repository:...public class Repository<T> : IRepository<T> where T : class { private readonly IRepositoryContext _repositoryContext; public Repository(IRepositoryContext repositoryContext) { _repositoryContext = repositoryContext; _objectSet = repositoryContext.GetObjectSet<T>(); } public virtu...

Can't update database using EF Migrations after updating to EF 6.0.0-alpha

I can't update my database after updating Entity Framework to version 6.0.0-alpha1. I keep getting the following error:...PM> update-database -verbose Using StartUp project 'DataCenter'. Using NuGet project 'DataCenter.Domain'. Specify the '-Verbose' flag to view the SQL statements being applied to the target database. Target database is: 'datacent...

Cannot implicitly convert type 'System.Collections.Generic.List<AnonymousType#1>' to 'System.Collections.Generic.IEnumerable

As soon as I tried to join correctly, an exception appeared....I am your Controller.... public IEnumerable<APPLICANT> GetApplicant() { IEnumerable<APPLICANT> applicantdata = Cache.Get("applicants") as IEnumerable<APPLICANT>; IEnumerable<Profile> profiledata = Cache.Get("profiles") as IEnumerable<Profile>; if (applica...

Entity Object attached/not attached to dbContext

Because one of the sub entity properties, ...PropModel31..., was reset to new (with Id=0), the exception was generated....The exclusion was not particularly clear....Many thanks to Andrew Counts for his assistance and knowledge!

Passing Context object between Repository, Generic repository & unit of work

I'm working on an entity framework 6 and asp.net mvc web application. I wish to include the following in my application:...class for generic repositories....For each entity type, there is a specific repository class. Where the generic repository will diverge into this specific repository....To ensure that all operations from the dedicated repositor...

Cordinate between my repository classes and controller classes to be using the same Context object

An asp.net mvc web application is what I'm working on. I have now developed a number of repositories classes, such as the following abstract repositories classes:-...public interface ISkillRepository : IDisposable {//code goes here.. ...&...public interface IStaffRepository : IDisposable {//code goes here ...the model, and the repositories -...publ...

Attaching an entity of type 'X' failed because another entity of the same type

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EF, Automapper exception, "Attaching an entity of type ... failed because another entity of the same type already has the same primary key value"

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Error attaching entity because of same primary key when trying to save an update

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c# entity framework: correct use of DBContext class inside your repository class

As you can see below, I used to implement my repository classes....public Class MyRepository { private MyDbContext _context; public MyRepository(MyDbContext context) { _context = context; } public Entity GetEntity(Guid id) { return _context.Entities.Find(id); } } ...The following arti...