private SingletonTransaction() { transactions = new ObservableCollection <Transaction>(); sqlUpdate = new Data.SQLManager("SELECT * FROM Trasaction"); }
private SingletonUser() { users = new ObservableCollection <User>(); sqlUpdate = new Data.SQLManager("SELECT * FROM User"); }
private SingletonCustomer() { customers = new ObservableCollection <Customer>(); sqlUpdate = new Data.SQLManager("SELECT * FROM Customers"); }
private SingletonProduct() { products = new ObservableCollection <Product>(); sqlUpdate = new Data.SQLManager("SELECT * FROM Products"); }