asp.net mvc - Issue in Connecting Web App with localdb using DataContext file and webConfig file -

i have created mvc web application using repository & di approach. have used code first approach too.

here datacontext file:

namespace efreppattest.data {     public class datacontext : dbcontext, idbcontext     {         public new idbset<tentity> set<tentity>() tentity: class         {             return base.set<tentity>();         }          protected override void onmodelcreating(dbmodelbuilder modelbuilder)         {             var typestoregister = assembly.getexecutingassembly().gettypes()             .where(type => !string.isnullorempty(type.namespace))             .where(type => type.basetype != null && type.basetype.isgenerictype &&                type.basetype.getgenerictypedefinition() == typeof(entitytypeconfiguration<>));             foreach (var type in typestoregister)             {                 dynamic configurationinstance = activator.createinstance(type);                 modelbuilder.configurations.add(configurationinstance);             }              base.onmodelcreating(modelbuilder);          }      } } 

i have defined connecting string in web.config file below:

<add name="datacontext"    connectionstring="data source=(localdb)\v11.0;attachdbfilename=|datadirectory|\ecommerce.mdf;integrated security=true"    providername="system.data.sqlclient" /> 

please note here have mentioned same name connection string , context file.

here post method:

  [httppost]         public actionresult create(categorymodel model)//formcollection collection         {             try             {                 // todo: add insert logic here                 if (model == null)                     return view(model);                  var category = new category();                 category.name = model.name;                  categoryservice.insert(category);                  return redirecttoaction("index");             }             catch             {                 return view(model);             }         } 

categoryservice:

 public class categoryservice : icategoryservice     {         private irepository<category> _categoryrepository;          public categoryservice(irepository<category> categoryrepository)         {             this._categoryrepository = categoryrepository;         }      public void insert(category category)             {                 if (category == null)                     throw new argumentnullexception("category");                  _categoryrepository.insert(category);             }  } 

repositoryservice:

 public class repositoryservice<tentity> : irepository<tentity> tentity: class     {         private idbcontext _context;          private idbset<tentity> entities         {             { return this._context.set<tentity>(); }         }          public repositoryservice(idbcontext context)         {             this._context = context;         }           public void insert(tentity entity)         {             entities.add(entity);         } } 

when run application on first time create local db. when going insert data, did not error application , not insert data db.

what cause this? have done wrong here?

any appreciated!

you should call savechanges() on _context after changes ex.:

public void insert(tentity entity) {     entities.add(entity);     _context.savechanges(); }