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POasp.net mvc System.Data.Linq.DuplicateKeyException on update
 

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  1. POasp.net mvc System.Data.Linq.DuplicateKeyException on update
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    <p>I'm using asp.net mvc with linq to sql repositories and the following code is throwing an mvc System.Data.Linq.DuplicateKeyException exception on this._table.Attach(entity)</p> <p>My code is something like that:</p> <pre><code> public ActionResult Edit(int id) { return View(_controllerRepository.GetById(id)); } public ActionResult Edit(Directivo entity) { try { _repository.Save(entity, this.UserName) } catch (Exception ex) { return View(ex); } } </code></pre> <p>And in the repository:</p> <pre><code> public virtual void Save(T entity, string userName) { if (0 == entity.Id) { entity.UsuarioIntroduccion = userName; entity.FechaIntroduccion = DateTime.Now; entity.UsuarioModificacion = null; entity.FechaModificacion = null; this._table.InsertOnSubmit(entity); } else { entity.UsuarioModificacion = userName; entity.FechaModificacion = DateTime.Now; this._table.Attach(entity); this._table.Context.Refresh(RefreshMode.KeepCurrentValues, entity); } try { this._dataContext.SubmitChanges(); } catch (SqlException ex) { throw new DataContextException(ex); } } </code></pre> <p>Note that the Id isn't 0.</p> <p>Its really weird because it happens only with this class, i have a couple more that are working well.</p> <p>The table is that:</p> <pre><code>CREATE TABLE [Directivo]( [Id] [int] IDENTITY(1,1) NOT NULL, [Nombre] [varchar](45) NOT NULL, [Apellidos] [varchar](60) NOT NULL, [FechaNacimiento] [datetime] NULL, [CargoDirectivoId] [int] NOT NULL, [PathImagen] [varchar](250) NULL, FechaIntroduccion datetime not null, UsuarioIntroduccion varchar(45) not null, FechaModificacion datetime, UsuarioModificacion varchar(45), PRIMARY KEY (Id), FOREIGN KEY (CargoDirectivoId) REFERENCES CargoDirectivo(Id) ON DELETE NO ACTION ON UPDATE NO ACTION ) </code></pre> <p>And the class is the autogenerated by linq and a partial class that makes it inherit an interface, and sets the buddy class for metadata to use xVal</p> <p>Do you have any clues about what could be happening?</p> <p>Thanks in advance!</p>
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    1. PTQuestion
    1. USAlfredo Fernández
    1. USAlfredo Fernández
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    1. PO
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      1. PTAnswer
    1. VO
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      1. POasp.net mvc System.Data.Linq.DuplicateKeyException on update
      1. USname1ess0ne
      1. VTFavorite
    1. COWhat does the 'Directivo' class look like?
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      1. POasp.net mvc System.Data.Linq.DuplicateKeyException on update
      1. USCharlino
    2. COI updated my question with this information, thanks!
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      1. POasp.net mvc System.Data.Linq.DuplicateKeyException on update
      1. USAlfredo Fernández
    3. COSorry but no... if it's only happening with that one class I would suggest comparing it to other Linq2SQL classes to see what the difference is. I'd also follow two a different Linq2SQL entity through the debugger to see what differences there are at different stages. Other than that I can't really help sorry.
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      1. POasp.net mvc System.Data.Linq.DuplicateKeyException on update
      1. USCharlino
 

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