public static void Add(User user)
{
using (var db = new UsersDbContext())
{
var nextId = db.Users.Count() + 1;
user.Id = nextId;
db.Users.Add(user);
db.UserActivities.Add(new UserActivity {
User = user, Activity = "Creted by new user.", TimeStamp = DateTime.Now, Id = Guid.NewGuid()
});
db.SaveChanges();
}
}