Скачать или смотреть C# - Part 32 - What is explicit interface implementation? - Tutorial For Beginners

In this video we will be learning about
Explicit interface implementation


In C#, explicit interface implementation allows a class to define a method or property that specifically implements a member of an interface the class inherits from. This is distinct from implicit implementation, where the class member with the same signature as the interface member automatically fulfills the contract.

Why Use Explicit Interface Implementation?

Here are the primary reasons to use explicit interface implementation:

Disambiguating Conflicting Names: When multiple interfaces you implement have methods or properties with the same name and signature, explicit implementation clarifies which interface's member a particular class method belongs to. This avoids ambiguity and potential errors.

Hiding Implementation Details: By making the interface member implementation private or internal, you can control how it's accessed from outside the class. This promotes better encapsulation and data hiding.

Overriding Default Interface Implementations: If an interface provides a default implementation for a method, you can override it using explicit implementation to provide a custom behavior specific to your class.

Key Points:

The method or property signature (return type, name, and parameters) must exactly match the interface member it implements.
You don't specify an access modifier (public, private, etc.) for the explicitly implemented member, as it's not directly accessible through the class instance.
To call the explicitly implemented member, you need to cast the class instance to the interface type and then access the member using the interface's syntax.