ObservableCollection<>对比列表<> [英] ObservableCollection<> vs. List<>

问题描述

我有很多实体，每个实体都带有嵌套的 List<>.

I have lots of entities with nested List<> in each.

例如，我有 BaseEntity，它有 List.ColumnEntity 类有 List 等.

For example, I have BaseEntity which has List<ColumnEntity>. ColumnEntity class has List<Info> and so on.

我们正在使用 WPF UI，我们需要跟踪每个列表中的所有更改BaseEntity.它是通过基于所需列表实例化一个 new ObservableCollection 并绑定到该 ObservableCollection 来实现的.

We are working with a WPF UI, and we need to track all changes in every List of BaseEntity. It is implemented by instantiating a new ObservableCollection based on the needed list, and with binding to that ObservableCollection.

将所有这些嵌套的 Lists 更改为 ObservableCollections 的利弊是什么?所以我们可以跟踪 BaseEntity 本身的所有变化，而无需将 BaseEntity 的每个列表重新分配给修改后的绑定 ObservableCollection?

What are the pros and cons changing all these nested Lists to ObservableCollections? So we can track all changes in BaseEntity itself without reassigning each list of BaseEntity to modified bound ObservableCollection?

假设从不使用特定于 List 的方法.

Assuming that methods specific to List are never used.

推荐答案

有趣的问题，考虑到 List 和 ObservableCollection 都实现了 IList 没有太多有一点不同，ObservableCollection 还实现了 INotifyCollectionChanged 接口，它允许 WPF 绑定到它.

Interesting question, considering that both List and ObservableCollection implement IList<T> there isn't much of a difference there, ObservableCollection also implements INotifyCollectionChanged interface, which allows WPF to bind to it.

主要区别之一是 ObservableCollection 没有 AddRange 方法，这可能会产生一些影响.

One of the main differences is that ObservableCollection does not have AddRange method, which might have some implications.

此外，我不会将 ObservableCollection 用于我知道我不会绑定到的地方，因此重要的是检查您的设计并确保您采用正确的方法分离关注的层.

Also I would not use ObservableCollection for places where I know I would not be binding to, for this reason it is important to go over your design and making sure that you are taking the correct approach in separating layers of concern.

至于 Collection 和 List 之间的区别你可以看看这里通用列表与集合

As far as the differences between Collection<T> and List<T> you can have a look here Generic Lists vs Collection

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