public int AddThread(ThreadAddRequest model, string userId)
        {
            int id = 0;

            DataProvider.ExecuteNonQuery(GetConnection, "dbo.ForumThreads_Insert"
               , inputParamMapper: delegate(SqlParameterCollection paramCollection)
               {
                   paramCollection.AddWithValue("@TopicId", model.TopicId);
                   paramCollection.AddWithValue("@Title", model.Title);
                   paramCollection.AddWithValue("@Content", model.Content);
                   paramCollection.AddWithValue("@UserId", userId);

                   SqlParameter p = new SqlParameter("@Id", System.Data.SqlDbType.Int);
                   p.Direction = System.Data.ParameterDirection.Output;

                   paramCollection.Add(p);

               }

               , returnParameters: delegate(SqlParameterCollection param)
               {
                   int.TryParse(param["@Id"].Value.ToString(), out id);
               }
               );

            return id;
        }
        public HttpResponseMessage AddThread(ThreadAddRequest model)
        {
            if (!ModelState.IsValid)
            {
                return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
            }

            ItemResponse<int> response = new ItemResponse<int>();

            string userId = _userService.GetCurrentUserId();
            response.Item = _forumService.AddThread(model, userId);

            return Request.CreateResponse(response);
        }