when to use Collection vs List [duplicate]

Answer 1

• Collection<T>:

  Provides the base class for a generic collection.

• List<T>:

  Represents a strongly typed list of objects that can be accessed by index. Provides methods to search, sort, and manipulate lists.

So, according the docs, one is intended as a base class for collections. The other is intended for use as a container.

So use List<T> and inherit from Collection<T>.