The entity type is not part of the model for the current context RSS

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  Cerberus2589

  Member

  259 Points

  144 Posts

  The entity type is not part of the model for the current context

  Oct 11, 2012 09:49 AM|LINK

  I am trying to setup a test project using EF and I am getting the following error message:

  The entity type Animal is not part of the model for the current context

  I've done some Google searching but not much has helped so far. 

  I have a Zoo database setup which contains 3 tables - Zone, Animal and Keeper. Each Animal has a foreign key to Zone and Keeper and Keeper has a foreign key to Zone. The method that I have used for this project is database first. The models for the database generated successfully and I can access those classes. But I'm not sure how to fix this error. I'll print my classes below. Any help would be much appreciated

  Zoo.Context.cs

      using System;
      using System.Data.Entity;
      using System.Data.Entity.Infrastructure;
      
      public partial class Entities : DbContext
      {
          public Entities()
              : base("name=Entities")
          {
          }
          
          protected override void OnModelCreating(DbModelBuilder modelBuilder)
          {
              throw new UnintentionalCodeFirstException();
          }
  
          public DbSet<Animal> Animals { get; set; }
          public DbSet<Keeper> Keepers { get; set; }
          public DbSet<Zone> Zones { get; set; }
      }

  IRepository.cs

      public interface IRepository<TEntity> : IDisposable
      {
          void Add(TEntity entity);
          void Delete(TEntity entity);
      }

  IAnimalRepository.cs

      public interface IAnimalRepository : IRepository<Animal>
      {
          IQueryable<Animal> GetAllByKeeper(Keeper keeper);
          IQueryable<Animal> GetAllByZone(Zone zone);
      }

  AnimalRepository.cs

  public class AnimalRepository : IAnimalRepository
      {
          private IDbContext _context;
  
          public AnimalRepository(IDbContext context)
          {
              this._context = context;
          }
  
          public IQueryable<Animal> GetAllByKeeper(Keeper keeper)
          {
              throw new System.NotImplementedException();
          }
  
          public IQueryable<Animal> GetAllByZone(Zone zone)
          {
              throw new System.NotImplementedException();
          }
  
          public void Add(Animal entity)
          {
              _context.Set<Animal>().Add(entity);
          }
  
          public void Delete(Animal entity)
          {
              _context.Set<Animal>().Remove(entity);
          }
  
          public void Dispose()
          {
              if (_context != null)
                  _context.Dispose();
          }
      }

  IDbContext.cs

      public interface IDbContext
      {
          IDbSet<TEntity> Set<TEntity>() where TEntity : class;
          int SaveChanges();
          void Dispose();
      }

  ZooContext.cs

      public class ZooContext : Entities, IDbContext
      {
          public new IDbSet<TEntity> Set<TEntity>() where TEntity : class
          {
              return base.Set<TEntity>();
          }
      }

  Program.cs

  public class Program
      {
          public static void Main(string[] args)
          {
              try
              {
                  IDbContext context = new ZooContext();
                  IRepository<Animal> repository = new AnimalRepository(context);
  
                  Animal animal = new Animal() { Id = 4, Name = "Giraffe", Age = 7, KeeperId = 2, ZoneId = 2 };
                  repository.Add(animal);
                  context.SaveChanges();
              }
              catch (Exception ex)
              {
                  Console.WriteLine(ex.Message);
              }
  
              Console.ReadLine();
          }
      }

  
  
  
  
  
  
  
  
  

   

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  thaicarrot

  Contributor

  5132 Points

  1465 Posts

  Re: The entity type is not part of the model for the current context

  Oct 11, 2012 01:11 PM|LINK

  Cerberus2589

  Cerberus2589

  This is because the "Animal" doesn't belong to current context.

  Right click at the "Animal" then choose Go to Definition. Make sure that you're not generated other class.

  Are you using code first map to existing database?

  Best Regards
  Weera
  
  
  • Edited by Cerberus2589 on Oct 25, 2012 08:23 AM
  • Edited by Cerberus2589 on Oct 25, 2012 08:23 AM
  • Marked as answer by Cerberus2589 on Oct 25, 2012 08:23 AM
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  Decker Dong ...

  All-Star

  118619 Points

  18779 Posts

  Re: The entity type is not part of the model for the current context

  Oct 13, 2012 01:46 AM|LINK

  Cerberus2589

  public void Add(Animal entity)
          {
              _context.Set<Animal>().Add(entity);
          }

  Hi,

  Try to use this below:

  _context.Animals.Add(entity);

  I'm suspecting it that because the EntityState isn't right. (It has been in Detached, which has caused the problem).

  • Edited by decker dong - msft on Oct 17, 2012 02:10 AM
  • Edited by decker dong - msft on Feb 15, 2013 12:31 AM
  • Edited by decker dong - msft on Feb 15, 2013 12:31 AM
  • Edited by MetalAsp.Net on Mar 01, 2013 08:15 AM
• • Reply
  

  Cerberus2589

  Member

  259 Points

  144 Posts

  Re: The entity type is not part of the model for the current context

  Oct 25, 2012 08:24 AM|LINK

  Thanks for your answers I got this resolved in the end. 

• • Reply
  

  nahidf

  Member

  2 Points

  1 Post

  Re: The entity type is not part of the model for the current context

  Feb 14, 2013 03:32 PM|LINK

  please explaine how?

  i have the same problem

• • Reply
  

  DukeAmes

  Member

  66 Points

  15 Posts

  Re: The entity type is not part of the model for the current context

  Feb 26, 2013 01:41 PM|LINK

  Cerberus2589

  Thanks for your answers I got this resolved in the end. 

  Please support the community and post your solution. Thank you.

• • Reply
  

  saltug

  Member

  2 Points

  6 Posts

  Re: The entity type is not part of the model for the current context

  Mar 04, 2013 10:16 AM|LINK

  Where did you get this tutorial? I need something similar.

  Serhan Altug