public static void EnshurePopulated(IApplicationBuilder builder) { ToDoContext context = (ToDoContext)builder.ApplicationServices.GetService(typeof(ToDoContext)); UserManager <UserEntity> userManager = (UserManager <UserEntity>)builder.ApplicationServices.GetService(typeof(UserManager <UserEntity>)); context.Database.Migrate(); if (userManager.Users.Count() == 0) { userManager.CreateAsync(new UserEntity { Email = "*****@*****.**", UserName = "******" }, "123Qweasd!").Wait(); } if (!context.Tasks.Any()) { TagEntity[] tags = new TagEntity[] { new TagEntity { Name = "Продукти", Color = "#32a842" }, new TagEntity { Name = "М'ясо", Color = "#c70442" }, new TagEntity { Name = "Пиво", Color = "#94007b" }, new TagEntity { Name = "Уроки", Color = "#002594" }, new TagEntity { Name = "WebApi", Color = "#19223d" } }; context.AddRange(tags); CategoryEntity[] categories = new CategoryEntity[] { new CategoryEntity { Name = "Навчання" }, new CategoryEntity { Name = "Їжа" }, new CategoryEntity { Name = "Відпочинок" }, }; context.AddRange(categories); Task <UserEntity> task = userManager.FindByEmailAsync("*****@*****.**"); task.Wait(); UserEntity userEntity = task.Result; //addTasks TaskEntity task1 = new TaskEntity { Description = "Зробити домашку по WebApi", Category = categories[0], Date = DateTime.Now - TimeSpan.FromDays(1), Priority = 1, User = userEntity }; context.Add <TaskEntity>(task1); ICollection <TagEntity> tags1 = new List <TagEntity>() { tags[3], tags[4] }; task1.Tags = new List <TaskTag>(); foreach (var tag in tags1) { task1.Tags.Add(new TaskTag { Task = task1, Tag = tag }); } TaskEntity task2 = new TaskEntity { Description = "Випити пивка з друзями", Category = categories[2], Date = DateTime.Now + TimeSpan.FromDays(1), Priority = 5, User = userEntity }; context.Add <TaskEntity>(task2); ICollection <TagEntity> tags2 = new List <TagEntity>() { tags[0], tags[2] }; task2.Tags = new List <TaskTag>(); foreach (var tag in tags2) { task2.Tags.Add(new TaskTag { Task = task2, Tag = tag }); } context.SaveChanges(); } }