private void GenerateArticles() { ArticleState New() { List <Tuple <string, string> > GetTopics() { var ret = new List <Tuple <string, string> > { RandomGenerationData.TopicList[ RandomGenerationData.Random.Next(RandomGenerationData.TopicList.Count)] }; return(ret); } var topic = GetTopics(); var res = new ArticleState { Id = Guid.NewGuid(), CreationDate = DateTime.Now.AddHours(-RandomGenerationData.Random.Next(10000)), Abstract = RandomGenerationData.ExcerptsList[ RandomGenerationData.Random.Next(RandomGenerationData.ExcerptsList.Count)], Content = RandomGenerationData.Contents[ RandomGenerationData.Random.Next(RandomGenerationData.Contents.Count)], Image = new Uri( RandomGenerationData.ImagesList[ RandomGenerationData.Random.Next(RandomGenerationData.ImagesList.Count)]), Language = RandomGenerationData.Random.Next(2) > 0 ? Language.English : Language.Mandarin, Tags = topic.Select(tuple => tuple.Item2).ToList(), Catergory = RandomGenerationData.Random.Next(2) > 0 ? ArticleCategory.Science : ArticleCategory.Technology, Title = String.Format( RandomGenerationData.TitleList[ RandomGenerationData.Random.Next(RandomGenerationData.TitleList.Count)], topic.First().Item1), }; return(res); } for (var i = 0; i < ArticlesNumber; i++) { Articles.AddLast(New()); } }