public void AddQuestion(QuestionRecomendation questionRecomendations)
        {
            scoreCalculated = false;

            try
            {
                int categoryId = context.Questions.Find(questionRecomendations.questionId).CategoryId;
                CategoryRecomendation parentCategory = null;

                foreach (CategoryRecomendation category in categories)
                {
                    if (category.CategoryId == categoryId)
                    {
                        parentCategory = category;
                        break;
                    }
                }

                if (parentCategory == null)
                {
                    parentCategory = new CategoryRecomendation(categoryId);
                    categories.Add(parentCategory);
                }

                parentCategory.QuestionRecomendations.Add(questionRecomendations);

                OverallVendors = context.Vendors.Join(context.OverallCategoryVendorEntries,
                                                      v => v.Id,
                                                      ocve => ocve.VendorId,
                                                      (v, ocve) => v
                                                      ).ToList();
            }
            catch
            {
                throw new ArgumentException("Unknown question category");
            }
        }
        public void AddQuestion(QuestionRecomendation questionRecomendations)
        {
            scoreCalculated = false;

            try
            {
                int categoryId = context.Questions.Find(questionRecomendations.questionId).CategoryId;
                CategoryRecomendation parentCategory = null;

                foreach (CategoryRecomendation category in categories)
                {
                    if (category.CategoryId == categoryId)
                    {
                        parentCategory = category;
                        break;
                    }
                }

                if (parentCategory == null)
                {
                    parentCategory = new CategoryRecomendation(categoryId);
                    categories.Add(parentCategory);
                }

                parentCategory.QuestionRecomendations.Add(questionRecomendations);

                OverallVendors = context.Vendors.Join(context.OverallCategoryVendorEntries,
                                    v => v.Id,
                                    ocve => ocve.VendorId,
                                    (v, ocve) => v
                                 ).ToList();
            }
            catch
            {
                throw new ArgumentException("Unknown question category");
            }
        }