asp.net mvc - Update object in Entity Framework -

public class sqldatacontext : dbcontext     {         public dbset<message> messages { get; set; }          protected override void onmodelcreating(system.data.entity.modelconfiguration.modelbuilder modelbuilder)         {              base.onmodelcreating(modelbuilder);         }     } 

and repository class:

 public class sqlrepository : irepository         {             private sqldatacontext _datacontext;             public sqlrepository(sqldatacontext datacontext) {                 _datacontext = datacontext;             }              public dbset<message> messages {                 { return _datacontext.messages; }              }              public void commit() {                 _datacontext.savechanges();             }          } 

and service class:

public class messagesservices : imessagesservices     {         #region repository                 private irepository _repository;         public usersservices(irepository repository) {             _repository = repository;         }         #endregion           /// <summary>     /// update message in repository     /// </summary>     public void update(message message) {         if (message != null) {             _repository.messages.attach(message);             _repository.commit();         }     } } 

if message this:

public viewresult edit(int messageid)     {         var message = _repository.messages.first(j => j.messageid == messageid);         message.text = "test";         _userservice.update(message);     } 

everything okay, changes not saved database.

message controller constructor

private irepository _repository;         private imessagesservices _messageservices;         public messagescontroller(irepository repository, imessagesservices messageservices)         {             _repository = repository;             _messageservices = messageservices;         } 

repository, service , data context injected stucture map:

/// <summary>         /// configuration registry modules di         /// </summary>         public class webuiregistry : registry         {             public webuiregistry()             {                 for<dbcontext>().use(() => new sqldatacontext());                       for<irepository>().httpcontextscoped().use<sqlrepository>();                 for<iusersservices>().use<usersservices>();                 for<imessagesservices>().use<messagesservices>();                 for<ijobadvertsservices>().use<jobadvertsservices>();                 for<ilog>().use<sqllogservices>();             }         } 

@slauma have right.

if try this:

objectfactory.getinstance<sqldatacontext>().messages.attach(message);                 objectfactory.getinstance<sqldatacontext>().entry(message).state = entitystate.modified;                 objectfactory.getinstance<sqldatacontext>().savechanges(); 

them works fine, have multiple instance of sqldatacontext.

but this:

for<sqldatacontext>().use(() => new sqldatacontext()); 

don't help. idea?

i think, problem here

private irepository _repository;         private imessagesservices _messageservices;         public messagescontroller(irepository repository, imessagesservices messageservices)         {             _repository = repository;             _messageservices = messageservices;         } 

because repository here injected (inside repository injected sqldatacontext) , in same moment injected services (inside injected repository, in repository sqldatacontext)

public class messagecontroller : controller     {         private irepository _repository;         private imessagesservices _messagesservices;         public messagecontroller(irepository repository, imessagesservices messagesservices)         {             _repository = repository;             _messagesservices = messagesservices;              bool samedatacontexts = object.referenceequals(((sqlrepository)_repository)._datacontext, ((sqlrepository)((messagesservices)_messagesservices)._repository)._datacontext);          } 

result true.

working solution:

private irepository _repository;         private imessagesservices _messageservices;         public messagescontroller(irepository repository)         {             _repository = repository;             _messageservices = objectfactory.getinstance<iusersservices>();         } 

and in services class:

/// <summary>     /// update message in repository     /// </summary>     public void update(message message) {         if (message != null) {             _repository.messages.attach(message);             objectfactory.getinstance<sqldatacontext>().entry(message).state = entitystate.modified;             _repository.commit();         } 

but here solution 2 constructor parameters ? , non-using

objectfactory.getinstance<sqldatacontext>().entry(message).state = entitystate.modified; 

try replace line ...

for<dbcontext>().use(() => new sqldatacontext()); 

...by

for<sqldatacontext>().use(() => new sqldatacontext()); 

(or add line if need dbcontext resolved somewhere else)

your sqlrepository wants have sqldatacontext constructor parameter, not dbcontext. case di container creates 2 new instances of sqldatacontext when irepository gets resolved , when imessagesservices gets resolved, instead of using registered sqldatacontext instance. repository , service class work 2 different data contexts result in failing update.

it's guess, don't know details of structuremap. unity (i more familiar with), not work: unity doesn't inject instances of registered base class @ places derived class required. need register exact class type want inject.

edit: idea check if datacontexts injected repository , service same, instance in edit method of controller:

bool samedatacontexts = object.referenceequals(_repository._datacontext,     _messageservices._repository._datacontext); 

(make _datacontext in repository , _repository in service class public temporarily test.)

this way can distinguish if have injection problem or ef problem.