I am trying to use the Entity Framework with a WCF service. It is giving me the following exception:

System.ArgumentException was unhandled by user code
Message="The default entity container name 'eKnowledgeSpaceDBModel.eKnowledgeSpaceDB' is invalid. The required mapping and metadata information could not be found.\r\nParameter name: defaultContainerName"
Source="System.Data.Entity"
ParamName="defaultContainerName"
StackTrace:
at System.Data.Objects.ObjectContext.CreateMapConnection(String connectionString, String defaultContainerName)
at System.Data.Objects.ObjectContext..ctor(String connectionString, String defaultContainerName)
at eKnowledgeSpaceDBModel.eKnowledgeSpaceDB..ctor(String connectionString) in f:\eKnowledgeSpaceSolution\eKnowledgeSpaceObjectModel\obj\Debug\eKnowledgeSpaceObjectModel.Model.cs:line 8656
at eKnowledgeSpace.Service.UserRegistrationMessageDirector.RegisterUser(UserDataContract user) in f:\eKnowledgeSpaceSolution\UserRegistrationService\MessageBuilder.cs:line 42
at eKnowledgeSpace.Service.RegistrationService.UserRegistration(UserDataContract user) in f:\eKnowledgeSpaceSolution\UserRegistrationService\UserRegistrationService.cs:line 26
at SyncInvokeUserRegistration(Object , Object[] , Object[] )
at System.ServiceModel.Dispatcher.InvokeDelegate.Invoke(Object target, Object[] inputs, Object[] outputs)
at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)

I am self hosting the WCF Service, and the host application config file is as follows:

< xml version="1.0" encoding="utf-8" >

<configuration>

<configSections>

<section name="system.data.ctp" type="System.Data.Common.DbProviderFactoriesConfigurationHandler, System.Data.CTP, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />

</configSections>

<system.data.ctp>

<DbProviderFactories>

<add name="SqlClient Data Provider" invariant="System.Data.SqlClient" description=".Net Framework Data Provider for SqlServer" type="System.Data.SqlClient.SqlClientFactory, System.Data.CTP, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />

<add name="Map Data Provider" invariant="System.Data.Mapping" description=".Net Framework Map Provider" type="System.Data.Mapping.MapProviderFactory, System.Data.Entity, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />

</DbProviderFactories>

</system.data.ctp>

<connectionStrings>

<add name="eKnowledgeSpaceDBConnectionString" connectionString="metadata=.;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=EKNOWLEDGE\SQLEXPRESS;Initial Catalog=eKnowledgeSpaceDB;Integrated Security=True&quot;" providerName="System.Data.Mapping" />

</connectionStrings>

<appSettings>

<add key="HTTPBaseAddress"

value="http://localhost:8000/Registration/"/>

<add key="TCPBaseAddress"

value="net.tcp://localhost:8010/Registration/"/>

</appSettings>

<system.serviceModel>

<services>

<service name= "eKnowledgeSpace.Service.RegistrationService" behaviorConfiguration="RegistrationService">

<host>

<baseAddresses>

<add baseAddress="http://localhost:8000/Registration/"/>

<add baseAddress="net.tcp://localhost:8010/Registration/"/>

</baseAddresses>

</host>

<endpoint

address="Register"

binding="basicHttpBinding"

contract= "eKnowledgeSpace.Service.IRegistrationService"

</service>

</services>

<behaviors>

<serviceBehaviors>

<behavior name="RegistrationService">

<serviceMetadata httpGetEnabled="true" />

<serviceSecurityAudit auditLogLocation="Application" messageAuthenticationAuditLevel="SuccessOrFailure" serviceAuthorizationAuditLevel="SuccessOrFailure"/>

</behavior>

</serviceBehaviors>

</behaviors>

</system.serviceModel>

</configuration>

What should I do to solve this problem. Is there any example of a Entity Framework being called by WCF Service

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