private void AddPackageForm_Load(object sender, EventArgs e)
        {
            List <Package> packageView = TravelPackageDB.GetPackages(lstViewTravelPackages);

            ClearLabels();
            btnEditPackage.Enabled   = false;
            btnDeletePackage.Enabled = false;
        }
        private void ClearForm()
        {
            lstViewTravelPackages.Clear();
            List <Package> refreshPackageView = TravelPackageDB.GetPackages(lstViewTravelPackages);

            ClearLabels();
            btnEditPackage.Enabled   = false;
            btnDeletePackage.Enabled = false;
        }