Chapter 15: Using Indexers

Chapter 15

Using Indexers

After completing this chapter, you will be able to:

• Encapsulate logical array-like declarations by using indexers.

• Control read access to indexers by declaring get accessors.

• Control write access to indexers by declaring set accessors.

• Create interfaces that declare indexers.

• Implement indexers in structs and classes that inherit from interfaces.

The previous chapter described how to use and implement properties as a means of providing controlled access to the fields in a class. Properties are useful for mirroring fields that contain a single value. However, indexers are invaluable if you want to provide access to items that contain multiple values, by using a natural and familiar syntax.