CollectionBase 类是否仍然受支持？
我想创建一个继承自 CollectionBase，但是好像不支持LINQ扩展！
还支持吗？或者有其他解决方案吗？
I want to create a class that inherits from CollectionBase, but it seems that it does not support LINQ extensions!
Is it still supported? Or is there an alternative solution?
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它仍然受支持，但已过时。您应该始终更喜欢使用
System.Collections.Generic< 中定义的集合/code>或System.Collections.ObjectModel命名空间。您也可以从通用集合之一继承来创建您自己的自定义强类型集合。而且它将完全支持 LINQ，因为它们已经实现了
IEnumerable。List或Collection是适合您情况的不错选择。如果可能的话，请避免使用非泛型集合，例如
CollectionBase、ArrayList和HashTable。使用它们会带来性能损失，并且与框架的最新版本中引入的通用版本相比，它们几乎没有什么优势（如果有的话！）。It is still supported, but it is obsolete. You should always prefer to use the collections defined in the
System.Collections.Genericor theSystem.Collections.ObjectModelnamespaces, instead.You can inherit from one of the generic collections to create your own custom, strongly-typed collection, as well. And it will have full support for LINQ, since they already implement
IEnumerable<T>.Either
List<T>orCollection<T>are good options for your case.Avoid the non-generic collections like
CollectionBase,ArrayList, andHashTableif at all possible. There is a performance penalty to using them, and they offer few advantages (if any!) over the generic versions that were introduced in more recent versions of the framework.Linq 扩展是为
IEnumerable编写的 （通用）和CollectionBase（非通用）不会继承它。这就是为什么您无法在其上使用 Linq 的原因。使用
System.Collections.ObjectModel.Collection< /a> 相反。Linq extensions are written for
IEnumerable<T>(Generic) and CollectionBase (Non-generic) does not inherit from it. That is why you are not able to use Linq on it.Use
System.Collections.ObjectModel.Collection<T>instead.