C# Expression Bodied Constructors and Finalizers

C# Expression Bodied Constructors and Finalizers for beginners and professionals with examples on overloading, method overriding, inheritance, aggregation, base, polymorphism, sealed, abstract, interface, namespaces, exception handling, file io, collections, multithreading, reflection etc.

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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

Next TopicC# Expression Bodied Getters and Setters

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