Interface implementation in Collection Class

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I have a question related to the Collection<t> class.

The collection class is:

C#

class Collection<T> : IList<T>, ICollection<T>, IEnumerable<T>, IList, ICollection, IEnumerable

Why does the Collection class implements ICollection and IEnumerable when it is already present in the IList. The Collection<t> class is implementing IList so it will implicitly have ICollection and IEnumerable.

C#

public interface IList : ICollection, IEnumerable

Posted 21-Oct-13 21:20pm

Sakshi Smriti

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OriginalGriff · Answer 1 · 2013-10-21T22:07:00

Solution 1

Probably, just to remind you when you look at the documentation that IList does include ICollection and IEnumerable!

If you use the VS shortcut to implement the interface you will get the same function prototypes regardless, so it is likely just a documentation thing - there is no need in your class to do the same, unless you want the completeness in your documentation as well. A VS Explicit implementation includes the appropriate class prefix if you need it anyway.

Posted 21-Oct-13 22:07pm

OriginalGriff

Comments

Sakshi Smriti 22-Oct-13 4:47am

So does it means that it(inheriting ICollection and IEnumerable in Collection<t> class) has been done by Microsoft just for completeness purpose

OriginalGriff 22-Oct-13 4:56am

Completeness in the documentation, yes.