In .Net, there are Collections available. Collections are of 3 kinds:
When order is important (It does not need to be sorted order but in order.)
When order is not important then unordered is used.
In Key/Value pairs form values are stored. For example, NIC card details. Note that key is never duplicated.
Examples of .Net collections are:
It is used when Insertion/Deletion is not much required.
It represents Linked-List. It is used when Insertion or Deletion is much required.
It is used when fast search is required. It is recommended to give prime number or atleast give odd number as parameter to its constructor because in other case (if you do not use odd number) then it affects Hashtable algorithm.
It is used when Last In First Out (LIFO) is required. There are 3 main methods of Stack i.e. push(), pop(), and peep().
It is used when First In First Out (FIFO) is required.