public CustomersView(CustomersViewModel model) { InitializeComponent(); DataContext = model; _custVewModel = new CustomersViewModel(); dataSource = _custVewModel.AutoFillCountry(); dataSourceState = _custVewModel.AutoFillState(); dataSourceCity = _custVewModel.AutoFillCity(); dataSourcePostalCode = _custVewModel.AutoFillPostalCode(); dataSourceShiping.AddRange(dataSource); dataSourceStateShiping.AddRange(dataSourceState); dataSourceCityShiping.AddRange(dataSourceCity); }