What is the concept of c# indexers?

An indexer is a special property that allows instances of a class to access elements of an object in a way similar to accessing an array. Indexers can be used to access elements in a class using syntax similar to array access, rather than through the object’s property names. Indexers are often used to simplify code, making it easier to access various elements of an object. In C#, indexers are defined and accessed using the this keyword and index parameters.