C# Expression Bodied Constructors and Finalizers

by Online Tutorials Library July 22, 2022

C# Expression bodied Constructors and Finalizers

C# expression body is a single line expression statement. It is used to provide single life definition to the method, constructor or property.

C# expression bodied constructor is a constructor that contains single line expression statement. The body of constructor does not contain anything except a single expression statement.

It is a concise way to perform some single line operations. Let’s see an example.

C# Expression Constructors Example

 using System; namespace CSharpFeatures {     class Student     {         public string Name { get; set; }         // Expression Constructor         public Student(string name) => Name = name;     }     class ExpressionConstructor     {         public static void Main()         {             Student student = new Student(“Rahul”);             Console.WriteLine($”Hello {student.Name}”);         }     } } 

Output:

Hello Rahul

C# Expression Bodied Finalizer

Finalizer is a destroyer that is used to perform cleanup related tasks. Body definition of finalizer is a single line expression.

While working with finalizer, following are the key points to remember.

It can destruct only class instance
A class can have only one finalizer
It can’t be overloaded or inherited
It invokes automatically
It does not contain parameters

C# Expression Bodied Finalizer Example

 using System; namespace CSharpFeatures {     class Student     {         public string Name { get; set; }         // Expression bodied constructor         public Student(string name) => Name = name;         // Expression bodied finalizer         ~Student() => Console.WriteLine(“Finalizer Executing”);     }     class ExpressionConstructor     {         public static void Main()         {             Student student = new Student(“Rahul”);             Console.WriteLine($”Hello {student.Name}”);         }     } } 

Output:

Hello Rahul Finalizer Executing

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