public List <Activity> GetActivities()
        {
            try
            {
                return(activiteit_db.GetAllActivities());
            }
            catch (Exception)
            {
                List <Activity> fakeactivitylist = new List <Activity>();

                Activity fakeactivity = new Activity(1, "generic error occured", DateTime.Now, 1, 1);

                fakeactivitylist.Add(fakeactivity);

                return(fakeactivitylist);
            }
        }