public void AddActivity(int sessionId, string activity)
        {
            var userid = Thread.CurrentPrincipal.Identity.GetUserId();

            var activitylog = ActivityLogs.Create();

            activitylog.UserId         = userid;
            activitylog.SessionId      = sessionId;
            activitylog.Activity       = activity;
            activitylog.CreateDateTime = DateTime.UtcNow;

            Entry(activitylog).State = EntityState.Added;
            SaveChanges();
        }