Entity Framework through WCF service (without IIS)

Question

Regarding this thread I've opened earlier:

Storing WCF rest request data with SQL Server stored procedure

I have a simple interface in my WCF service with one method which gets a myRequest parameter

public interface IService
{
    [OperationContract]
    string MyOperation(myRequest request);
}

When I'm posting the data from the client, the content type is application/json , so the request body auto deserialise into myRequest object.

myRequest is a WCF DataContract :

[DataContract]
public class myRequest

{
    string id;
    string Name;

    [DataMember]
    public string Name { get; set; }
    [DataMember]
    public string Id { get; set; }

}

public string MyOperation(myRequest request)
{
    if (request != null) {
        Contact contact = new Contact();
        contact.Id = Int32.Parse(request.Id);
        contact.DisplayName = request.Name;

        ContentContext db = new ContentContext();
        db.Contacts.Add(contact);
        db.SaveChanges();

        return "ok";
    }

    SetResponseHttpStatus(HttpStatusCode.InternalServerError);
    return null;
}

And finaly, hosting the service:

public class ProgramBL {
    public static void StartServer()
        {

            ServiceHost streamer = new ServiceHost(typeof(DataStreaming.StreamService));


            streamer.Open();
            Console.WriteLine("Service up and running at:");
            foreach (var ea in streamer.Description.Endpoints)
            {
                Console.WriteLine(ea.Address);
            }

            Program._StreamerHost = streamer;
        }
}

_StreamerHost its a static member of the Program class.

When I try to use the EF through WCF rest service hosted by Console/Application. When I'm trying to do it - the client gets always 400 Bad Request response.

Another thing - I created a new project in the solution for the database model, the WCF service is another project, so I added refrence of the database model project to the service project. To achive this I had to install and add a refrence to the Nuget Entityframe work package.

Any solutions?

Thanks

Answer 1

Ok so I solved the problem.

I have installed the NuGet Entity framework library only at the service project (I used the built in library at the database project). After I have installed the NuGet Entity framework on the database project + added the connectionString to the service App.config everything seems to be OK.