Hash table in C#

In C# hash table is the collection of key or values, which is used to map a key to value. We can use any non-null object as a key; we can retrieve the items from hash table by providing key.

The common function used in hash table is given below:

Add – used to add a pair of value to Hashtable

Syntax

HashTable.Add (Key, Value)

Hashtable h;

h.Add(“1”, “Sachin”);

  

ContainsKey – used to checked a specified key exist or not.

Syntax

bool HashTable.ContainsKey (key)

h.contains(“1”);

ContainsValue - used to checked a specified value exist or not.
Syntax 

bool HashTable.Containsvalue (value)

h.containsvalue(“Sachin”);

Remove – used to delete specified key or values.
Syntax 

HashTable.Remove(key)

h.remove(“1”)