difference between list and ienumerable in c#?

Question

difference between list and ienumerable

Manas Mohapatra · Answer

List is also implemented from IEnumerable interface. IEnumerable is an interface which has one method GetEnumerator() which returns IEnumerator type. List is a class that defines a generic collection. Secondly IEnumerable doesn't allow random access where as List does allow random access using integral index. Thirdly IEnumerable is read only(only loop over) but in List is not. Means you can loop over delete values from List. In term of performance iterating values from IEnumerable is much faster than iterating values from a List.

Nitin Sontakke · Answer

If you could please elaborate in bit more detail not fully satisfied? Do you want to say not fully understood? First things first do you know the precise difference between an Interface definition and an Interface implementation. If yes then it is very clear that IEnumerable is an interface definition and List is a interface implementation of IEnumerable. Furthermore please be aware that a class can implement multiple interfaces.

Tapan Patel · Answer

Okay. here is another one which has the example and it is from our own forum. http://www.c-sharpcorner.com/UploadFile/78607b/difference-between-ienumerable-icollection-and-ilist-interf/ Also take a look at below question which may help you. http://www.c-sharpcorner.com/forums/ienumerable-vs-list Please mark it as answer if it resolves the issue.

Tapan Patel · Answer

Refer to below link which has the explanation to the question. Basically when you say IEnumerable you are looking at interface with limited functionality but when you say List - it is an implementation of IEnumerable with some more functionality like indexing and others. http://stackoverflow.com/questions/4180767/whats-the-difference-between-liststring-and-ienumerablestring Please mark it as answer if it resolves the issue.

Soumalya Das · Answer

not fully satisfied