public void voidInvoice(string invoiceId)
 {
     DatabaseInvoiceQuery.voidInvoice(invoiceId, dc);
 }
 public ICashDrawer createCashDrawer(IEmployee emp, string bank)
 {
     return(DatabaseInvoiceQuery.createCashDrawer(emp, bank, dc));
 }
 public ITotal getCurrentInvoiceTotals(IInvoice currentInvoice)
 {
     return(DatabaseInvoiceQuery.getCurrentInvoiceTotals(currentInvoice));
 }
 //--------------------- Invoice Methods -----------------------------------------------
 public IInvoice createInvoice(IEmployee emp, ICashDrawer drawer)
 {
     return(DatabaseInvoiceQuery.createInvoice(emp, drawer, dc));
 }