Indexers allow class to be used just like an array.
Q. How to create an Indexers?
A. In place of Method name use "this" keyword and in
place of () Bracket use [] Square Bracket.
Normal Method = public string MethodName(int index)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace IndexerClass
{
class IndexerClass
{
//
Array of string values
private string[]
week = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };
//
Return Array Length
public int Length
{
get
{
return week.Length;
}
}
//
Indexer declaration
public string this[int index]
{
get
{
return week[index];
}
set
{
week[index] = value;
}
}
//
Indexer declaration
public int this[string name]
{
get
{
int index
= 0;
while (index
< Length)
{
if (week[index]
== name)
{
return index;
}
index++;
}
return index;
}
}
}
class Program
{
static void Main(string[]
args)
{
IndexerClass p
= new IndexerClass();
// Use
the indexer's get accessor to return value
for (int i
= 0; i < p.Length; i++)
{
Console.WriteLine(p[i]);
}
// Use
the indexer's get accessor to return index
Console.WriteLine(p["Thursday"]);
Console.ReadKey();
}
}
}
OUTPUT
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
4
Note:-
For More Info visit Microsoft.com
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