C# CollectionBase complete definition

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Is there any way, we could view complete definition for CollectionBase class in System.Collection namespace ? Even in msdn, I couldn't find the method definitions in CollectionBase class. Although, the web pages in msdn contains only the properties and method declarations, the definitions are not provided : msdn link.

My doubt was :-
CollectionBase class implements IList, ICollection and IEnumerable interfaces. To derive our own collections, we can use List, which gives us access to the items through an IList interface, and InnerList, which is the ArrayList object is used to store items. There is no trace of Add method in CollectionBase class, so how does List.Add(item) work ? Where has Add method been defined ? Add method can't be defined in interfaces and there is no trace of Add method in CollectionBase class..

Posted 6-Dec-12 6:05am

arunlakra15

Updated 12-Feb-18 9:06am

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OriginalGriff · Answer 1 · 2012-12-06T06:13:00

Solution 1

Um. I found it pretty easily: http://msdn.microsoft.com/en-us/library/system.collections.collectionbase.aspx[^]

And it lists the Add method under "Explicit Interface Implementations"

How did I find it?
I Googled for CollectionBase class[^] by highlighting it in your question and right clicking. Select "Search Google for..." and it was the top hit.

Perhaps your Google-fu needs a little improvement?

Posted 6-Dec-12 6:13am

OriginalGriff

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arunlakra15 6-Dec-12 12:25pm

ah perhaps.. I'm new to this. So there must be an implementation for IList.Add method in CollectionBase class, right ? And If there is, can we view how it has been implemented ?

Member 13674833 · Answer 2 · 2018-02-12T09:06:00

THE COLLECTIONBASE CLASS
The .NET Framework library does not include a generic Collection class
for storing data, but there is an abstract class you can use to build your
own Collection class—CollectionBase. The CollectionBase class provides the
programmer with the ability to implement a custom Collection class. The
class implicitly implements two interfaces necessary for building a Collection
class, ICollection and IEnumerable, leaving the programmer with having to
implement just those methods that are typically part of a Collection class.

From Book Titled: by M. McMillan
DATA STRUCTURES AND
ALGORITHMS USING C#