Indexer : Indexers allow your
class to be used just like an array.
·
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.
this [Parameter]
{
get
{
//
Get codes goes here
}
set
{
//
Set codes goes here
}
}
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();
}
}
}
