Here we will discuss the Expression bodied members in C#.
Expression bodied members in C#
The expression bodied member in c# allows us to provide the implementation of member in a better readable format. We can use expression bodied members in C# whenever the logic for any supported members such as a method or property consists of a single expression.
Syntax: member => expression
The expression bodied member was introduced in C# 6 only methods and properties members, it enhanced in c# 7 the following members.
- Methods
- Properties
- Constructor
- Destructor
- Getters
- Setters
- Indexers
Method Expression bodied
An expression bodied method consists of a single expression that returns a value the type matches the method’s return type,
For example, types that override the ToString method typically include a single expression that returns the string representation of the object.
We will create a console application by following steps
Select Create a new project.
Search for console application and select click on next.
Configure your application like project name and location.
Select the target framework. in my scenario, I chose .NET 5.0 and click on create
The below example defines a student class that overrides the ToString method with an expression body definition.
It also defines a GetFullName method that returns the full name of the student and again It also defines a DisplayName method that displays the name to the console.
Note that the return keyword is not used in the ToString expression body definition.
Generally, expression bodied methods are more used than other members.
Methods can even exhibit asynchronous behavior, if they return void, Task or Task<T>.