Collection : There are two types of collections

(i) Generic (ii) Non Generic

(i) Generic

Collection element contains value only

a) List<T>

b) ConcurrentQueue<T>

c) ConcurrentStack<T>

d) LinkedList<T>

e) HashSet

Collection element contains key and value

a) SortedList<TKey,TValue>

b) Dictionary<TKey,TValue>

c) ConcurrentDictionary<TKey,TValue>

(ii) Non-Generic

Collection element contains value only

a) Array

b) ArrayList

c) Queue

d) Stack

Collection element contains key and value

a) Hashtable

b) SortedList