what is indexe? why we use it?

Question

what is indexer in c# and how and why we use that in C#?

Sivaraman Dhamodaran · Answer

Indexer are useful to implement your own collection with the support of picking an individual item by means of index [] operator. This article explains that: Link

Nilesh Jadav · Answer

hey there! Indexers allow your class to be used just like an array. On the inside of a class you manage a collection of values any way you want. These objects could be a finite set of class members another array or some complex data structure. Regardless of the internal implementation of the class its data can be obtained consistently through the use of indexers. Read this link : http://www.dotnetperls.com/indexer Indexers are one neat feature of C#. They allow us to access a particular class as it is an array. They are similar to the properties in means that they encapsulate method calls into more convenient representation of value access and value setting. Declaring a property you can access it with its name so it behaves like variable. The indexer is actually a class so it behaves as a type i.e. you have to declare a variable of its type (actually to instantiate an object from it but all variables are objects anyway). Indexers are also called smart arrays in C# and can be used to treat an object as an array. An indexer allows an instance of a class or a struct to be indexed as an array which is useful for looping or iterating or data binding operations. The following is the syntax of an indexer declaration. this [arguments] { get { } Set { } } All indexers should accept at least one parameter. Indexers cannot be static. This is because static methods do not have access to ‘this’. The ‘this’ keyword indicates an instance of the current class.

Rajeesh Menoth · Answer

Hi Neeraj Upadhyay  Ref the following articles : 1) http://www.c-sharpcorner.com/uploadfile/puranindia/indexers-in-C-Sharp/ 2) http://www.codeproject.com/Articles/11760/Understanding-Indexer-in-C

Govinda Rajulu Yemineni · Answer

Hi Refer the following URL's http://www.c-sharpcorner.com/uploadfile/puranindia/indexers-in-C-Sharp/ http://www.codeproject.com/Articles/11760/Understanding-Indexer-in-C