Server Side Entities

userSession

   I am looking for the correct way to perform server-side code without using a remote procedure type mechanism. I wish to use a SessionID as part of my login component. I have implemented a LoginManager and have been using the Login method to successfully authenticate my user and return the IPrincipal object. Now I wish to as part of the server side login code to generate a SessionID ( I know there is a DevForce SessionKey ), insert time and date of the session and associated UserAccountID into the database and return the autogenerated SessionID as a property in the Principal object. I have enclosed some sample code. I am assuming my problem here is that the SaveChanges in the new_Session method is ASync. If it is server side can I make it synchronous or how do I complete the login process in this context.

       /// <summary>
        /// 
        /// </summary>
        /// <param name="credential"></param>
        /// <param name="entityManager"></param>
        /// <returns></returns>
        public IPrincipal Login(ILoginCredential credential, EntityManager entityManager)
        {
            UserConfigEntities userEntities = new UserConfigEntities(entityManager);
            if (credential == null)
            {
                throw new LoginException(LoginExceptionType.NoCredentials, "No credentials supplied");
            }
            // Return an IPrincipal. Any serializable type may be returned,   
            // here we use the DevForce UserIdentity and UserBase classes.   
            UserAccount aUser = Get_User(userEntities, credential.UserName);
            Verify_Credentials(aUser, credential.UserName, credential.Password, credential.Domain);
            var identity = new LEAF.Security.LEAFIdentity(credential.UserName, credential.Domain);
            var principal = new LEAF.Security.LEAFUser(identity, null);
            principal.loggedInUser = aUser;
            principal.SessionId = new_Session(entityManager, aUser);
            return principal;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        private Int32 new_Session(EntityManager entityManager, UserAccount aUser)
        {
            LEAFSession userSession = new LEAFSession();
            userSession.UserAccountID = aUser.UserAccountID;
            DateTime currentDateTime = DateTime.Now;
            userSession.DT_SessionStart = currentDateTime;
            //update the datetime and sessionID for the Session
            userSession.DT_Insert = currentDateTime;
            userSession.DT_Update = currentDateTime;
            userSession.SID_Insert = -1;
            userSession.SID_Update = -1;
            entityManager.AddEntity(userSession);
            entityManager.SaveChanges();
            return userSession.LEAF_SessionID;
        }