Should I use ICollection or IList?

IList is essentially an ICollection with random order-based access. In this case you should decide whether or not your results require list semantics such as order based indexing (then use IList ) or whether you just need to return an unordered “bag” of results (then use ICollection ).

What is the difference between IQueryable IEnumerable IList ICollection?

IQueryable,IList,IDictionary,ICollection inherits IEnumerable Interface. All the interfaces of type collection will inherits IEnumerable Interface. Differences Between IEnumerable and IQueryable IEnumerable:-when you are running a query which returns of type IEnumerable.

Which is better IEnumerable or IList?

You use IEnumerable when you want to loop through the items in a collection. IList is when you want to add, remove, and access the list contents out of order.

What is difference between IList and IEnumerable?

IList doesn’t support further filtering. IEnumerable exists in System. Collections Namespace. IEnumerable is a forward only collection, it can’t move backward and between the items.

Is IList faster than list?

Results. IList uses 40 Bytes more than List .

Why do we use ICollection?

ICollection is used because the IEnumerable interface provides no way of adding items, removing items, or otherwise modifying the collection.

Should I use ICollection or IEnumerable?

IEnumerable contains only GetEnumerator() method, like read-only iterate. ICollection is one step ahead of IEnumerable. If we want some more functionality like Add or remove element, then it is better to go with ICollection because we cannot achieve that with IEnumerable. ICollection extends IEnumerable.

What is difference between ICollection and List?

ICollection is an interface, List is a class.

What is difference between IList and List?

The main difference between List and IList in C# is that List is a class that represents a list of objects which can be accessed by index while IList is an interface that represents a collection of objects which can be accessed by index.

What is difference between IList and List in C#?

What is ICollection in C#?

The ICollection interface in C# defines the size, enumerators, and synchronization methods for all nongeneric collections. It is the base interface for classes in the System. Collections namespace.

What is difference between list and IList in C#?

Does IList support index based operations over collection?

As you are seeing in the below code, IList has Insert and Remove methods. Both the methods accept index in their parameter. So, it supports index based operations over collection. IList is the last interface in the hierarchy of all collection interfaces. It extends ICollection.

What is the use of icollection in Java?

ICollection is another type of collection, which derives from IEnumerable and extends it’s functionality to add, remove, update element in the list. ICollection also holds the count of elements in it and we does not need to iterate over all elements to get total number of elements.

Which is the last interface in the hierarchy of all collection interfaces?

IList is the last interface in the hierarchy of all collection interfaces. It extends ICollection. List is the concrete class. This class implements IList, ICollection, IEnumerable. IList provides us full flexibility to expose any method that list implements.