TypesOfCollections

 1.Generic collections/System.Collections.Generic

2.Non-Generic collections/System.Collections 

3.Concurrent collections/System.Collections.Concurrent

Generic collections/System.Collections.Generic:

List

Stack

Queue

LinkedList

HashSet

SortedSet

Dictionary

SortedDictionary

SortedList

Non-Generic collections/System.Collections:

ArrayList

Stack

Queue

Hashtable

Concurrent collections/System.Collections.Concurrent:

BlockingCollection

ConcurrentBag

ConcurrentStack

ConcurrentQueue

ConcurrentDictionary

Partitioner

Partitioner

OrderablePartitioner