INDEXER in C#

Senthurganesh Ramkumar

C#C# indexerwhat is Indexerc# concept

12 Comments

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Farheen Zaheer8y ago
Need example of indexer in multi dimensional array and also with inheritance.
Farheen Zaheer8y ago
Nice Explanation and easy to understand. Very helpful, thanks.
David Kiptoo8y ago
Easy to understand. Indexes allow you to use an object as array
Sunil Gupta8y ago
Hey you explained properly, but still unclear what Indexer does. Real use is missing, it seems.
Subash9y ago
Little difficult in understand the example
- Bimal Das9y ago
  Easy to understand I think
Ankur Chaturvedi11y ago
Nice article easy to understanding of concept ..Thanks alot
Upendra Pratap Shahi11y ago
good..
sarang chad13y ago
please tel me different types of indexers
Vidhya Sagar13y ago
A good basic explanation.. :)
mohammed muddin16y ago
ur explanation is good, i hope u continue the same.thank you.
Md Mostafijur Rahman18y ago
simple....

INDEXER IN C#

C# introduces a new concept Indexer. This is very useful for some situation. Let as discuss something about Indexer.

Indexer Concept is object act as an array.
Indexer an object to be indexed in the same way as an array.
Indexer modifier can be private, public, protected or internal.
The return type can be any valid C# types.
Indexers in C# must have at least one parameter. Else the compiler will generate a compilation error.

For Example

using System;
using System.Collections.Generic;
using System.Text;
namespace Indexers
{
class ParentClass
{
private string[] range = new string[5];
public string this[int indexrange]
{
get
{
return range[indexrange];
}
set
{
range[indexrange] = value;
}
}
}
/* The Above Class just act as array declaration using this pointer */
class childclass
{
public static void Main()
{
ParentClass obj = new ParentClass();
/* The Above Class ParentClass create one object name is obj */
obj[0] = "ONE";
obj[1] = "TWO";
obj[2] = "THREE";
obj[3] = "FOUR ";
obj[4] = "FIVE";
Console.WriteLine("WELCOME TO C# CORNER HOME PAGE\n");
Console.WriteLine("\n");
Console.WriteLine("{0}\n,{1}\n,{2}\n,{3}\n,{4}\n", obj[0], obj[1], obj[2], obj[3], obj[4]);
Console.WriteLine("\n");
Console.WriteLine("ALS.Senthur Ganesh Ram Kumar\n");
Console.WriteLine("\n");
Console.ReadLine();
}
}
}