public void LoadAllOfferings()
        {
            Data.Repository respository = new Data.Repository();

            try
            {
                ObservableCollection<Offering> offerings = respository.GetAllOfferings();
            }
            catch (Exception ex)
            {
                throw ex;
            }

            try
            {
                this.Offerings = offerings.ToViewModels();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }