private static void CascadingInsert()
 {
     var db = new BlogDbContex();
     var post = new Post
                    {
                        Title = "New Post Title Боби", 
                        Date = DateTime.Now, 
                        Body = "This post have comments and tags", 
                        User = db.Users.First(), 
                        Comments =
                            new[]
                                {
                                    new Comment { Text = "Comment 1", Date = DateTime.Now }, 
                                    new Comment
                                        {
                                            Text = "Comment 2", 
                                            Date = DateTime.Now, 
                                            User = db.Users.First()
                                        }
                                }, 
                        Tags = db.Tags.Take(3).ToList()
                    };
     db.Posts.Add(post);
     db.SaveChanges();
 }
        private static void CreateNewData()
        {
            var db = new BlogDbContex();

            var post = new Post { Title = "New Title", Body = "New Post Body", Date = DateTime.Now };

            db.Posts.Add(post);
            db.SaveChanges();
            Console.WriteLine("Post #{0} created.", post.Id);
        }