Introduction
Hash table is a part of collection in
c sharp, which store the key and value. It means hash table class is
represent a pair of key and value that organized based on the hash code of
the key. It is useful to access elements using by key.
Example
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Text;
using
System.Collections;
namespace
how_to_use_hashtable_class_in_c_sharp
{
class
Hash_table
{
static
void Main(string[]
args)
{
Hashtable
htable = new
Hashtable();
//create instance of hash table
htable.Add("001",
"Arvind kumar");
//add value in hash table in key
and value
htable.Add("002",
"Nitin Bhardwaj");
htable.Add("003",
"Manish Kumar");
if (htable.ContainsValue("Rajkumar"))
// check conduction
{
Console.WriteLine("This
student name is already in the list");
}
else
{
htable.Add("004",
"Rajkumar"); //
value add
}
ICollection
key = htable.Keys;
// Get a
collection of the keys.
foreach (string
n in key)
{
Console.WriteLine(n
+ ": " + htable[n]);
// show value of hash table
}
Console.ReadKey();
}
}
}
Output:
![output.jpg]()