public VersionControl(int invoiceID)
        {
            var    ip            = new InvoiceProperty(invoiceID);
            string invoiceNumber = ip.InvoiceNumber;
            var    ic            = new InvoiceCollection();

            _invoiceDatatable = ic.GetNewInvoiceRevision(invoiceNumber);
        }
        public VersionControl(string invoiceNumber)
        {
            var ic = new InvoiceCollection();

            _invoiceDatatable = ic.GetNewInvoiceRevision(invoiceNumber);
        }