c# - Implementing wcf with mvc4 entity framework fails invoking method -

i have wcf application in have used entitity framework , have implemented dbcontext querying database. when view svc file in browser exposes operations.

i have interface class this:

    [servicecontract]     public interface iservice1     {         [operationcontract]        list<booksmodels> getbookslist();          [operationcontract]         booksmodels getbook(int id);      } 

i have implementation in svc.cs file

    public list<booksmodels> getbookslist()     {         mvcentity en = new mvcentity();       return  en.book.tolist();      }      public int getbookid(int id)     {         //return db.book.find(id);         return 1;     } 

and booksmodels class this

[datacontract]     public class booksmodels         {             [key]             [datamember]             public int bookid { get; set; }             [datamember]     public string bookname{get;set;}     } 

and have config file default 1 created when creating wcf service application .

but when invoke getbookslist service mvc wcf client gives me following error:

failed invoke service. possible causes: service offline or inaccessible; client-side configuration not match proxy; existing proxy invalid. refer stack trace more detail. can try recover starting new proxy, restoring default configuration, or refreshing service.

but when invoke second method returns 1.

i examined when service uses dbcontext return data gives error , fine when not.

i have gone through various blogs , questions in stackoverflow didn't help. how can problem addressed. thanks

i think it's problem of serialization. make serialisation test you're business layer take list entity framework , serialize deserialize , compare before , after serialization.

use datacontractserializer :

datacontractserializer serialiser = new datacontractserializer(typeof(list<booksmodels>)); list<booksmodels> expected = business.getbookslist(); stream stream = new memorystream(); serialiser.writeobject(stream, expected); stream.position = 0; list<booksmodels> actual = serialiser.readobject(stream) list<booksmodels>; assert.isnotnull(actual); assert.areequal(expected.prop1, actual.prop1); assert.areequal(expected.prop2, actual.prop2); // ... // 

if doesn't work use proxy in entity framework. turn off proxy :

context.contextoptions.proxycreationenabled = false;