public static void SetInitialDatas(this IApplicationBuilder app) { using var context = RepositoryContext.Build(); var user = context.Users.FirstOrDefault(f => f.Login == "demo@demo"); if (user != null) { return; } user = new User() { Login = "******", Password = "******", Email = "*****@*****.**", }; user.Password = user.GetHash(); context.Add(user); context.SaveChanges(); }