包装一个IEnumerable 使用ObservableCollection

Question

从我的存储库我总是得到一个IEnumerable<T>。

在Ctor或我的ViewModel的方法中，我想将我的实体包装成像这样的ObservableCollection<T>：

private ObservableCollection<CustomerViewModel> customerViewModels;

public BillingViewModel(IService service)
{
   ...
   IEnumerable<Customer> customers = service.GetCustomers();

   // that will not work because of a different type
   customerViewModels = new ObservableCollection(customers); 

}

你会怎么做？

Answer 1

假设您有从Customer到CustomerViewModel的某种转换：

customerViewModels = new ObservableCollection<CustomerViewModel>
    (customers.Select(c => ConvertToViewModel(c)));

Answer 2

你如何将Customer转换为CustomerViewModel？也许你只需要这样的东西：

customerViewModels = new ObservableCollection<CustomerViewModel>(
    from c in customers
    select new CustomerViewModel(c)
);