Diego, Federico,
No deberían usar .Add en lugar de usar .Attach?
// Summary:
* // Adds the given entity to the context underlying the set in
the Added state
// such that it will be inserted into the database when
SaveChanges is called.
* //
// Parameters:
// entity:
// The entity to add.
//
// Returns:
// The entity.
//
// Remarks:
// Note that entities that are already in the context in some
other state will
// have their state set to Added. Add is a no-op if the entity
is already in
// the context in the Added state.
public TEntity Add(TEntity entity);
//
// Summary:
* // Attaches the given entity to the context underlying the set.
That is, the
// entity is placed into the context in the Unchanged state,
just as if it had
// been read from the database.*
//
// Parameters:
// entity:
// The entity to attach.
//
// Returns:
// The entity.
//
// Remarks:
// * Attach is used to repopulate a context* with an entity that
is known to already
// exist in the database. SaveChanges will therefore not
attempt to insert
// an attached entity into the database because it is assumed to
already be
// there. Note that entities that are already in the context in
some other
// state will have their state set to Unchanged. Attach is a
no-op if the entity
// is already in the context in the Unchanged state.
public TEntity Attach(TEntity entity);
2011/7/29 Diego Cepero <[email protected]>
> Federico,****
>
> ** **
>
> Attach() agrega el objeto al contexto con estado
> “unchanged”. Antes de la llamada a SaveChanges() cambiá su estado a
> “modified”, así:****
>
> ** **
>
> db.Entry(client).State =
> EntityState.Modified;****
>
> ** **
>
> Un saludo.****
>
> ** **
>
> *De:* [email protected] [mailto:[email protected]] *En nombre de *Federico
> Sebastian Lazarte
> *Enviado el:* viernes, 29 de julio de 2011 03:08 a.m.
> *Para:* [email protected]
> *Asunto:* [puntonet] Update con EF 4.1 Code First****
>
> ** **
>
> Hola Amigos como estan?.****
>
> Estoy dando mis primeros pasos con EF 4.1 Code First. Por ahora logre armar
> la capa de acceso a datos sin problemas.****
>
> Lo unico que si, es que no logro poder hacer el update de una entidad.****
>
> Mi codigo es el siguiente:****
>
> ** **
>
> public void Update(Client client)****
>
> {****
>
> using (SeoManagerContext db = new SeoManagerContext())****
>
> {****
>
> ****
>
> db.Clients.Attach(client);****
>
> db.SaveChanges();****
>
> }****
>
> }****
>
> ** **
>
> No me da ningun error, pero, no actualiza los datos en la BD.****
>
> Alguna Idea?.****
>
> Saludos.****
>
> ** **
>
> ** **
>
> ** **
>
