namespace Data { public static class ExcelManager { private static AgreementTermsDataExcel _agreementterms; private static InventoryDataExcel _inventory; private static NoteBookInformationDataExcel _notebookinformation; public static AgreementTermsDataExcel AgreementTerms => _agreementterms; public static InventoryDataExcel Inventory => _inventory; public static NoteBookInformationDataExcel NoteBookInformation => _notebookinformation; static ExcelManager() { _agreementterms = new AgreementTermsDataExcel(); _inventory = new InventoryDataExcel(); _notebookinformation = new NoteBookInformationDataExcel(); } }}