C# introduces a new concept known as Indexers which are used for treating an object as an array. The indexers are usually known as smart arrays in C#. They are not an essential part of object-oriented programming.
Defining an indexer allows you to create classes that act as virtual arrays. Instances of that class can be accessed using the [] array access operator.
Creating an Indexer
< modifier > <
return type > this[argument list] {
get {
// your get block code
}
set {
// your set block code
}
} ​
In the above code,
<modifier>
can be private, public, protected or internal.
<return type>
can be any valid C# types.
