DotNet FrameWork – What Is Boxing And Unboxing,Value Type and Reference Type – Day 17 of 30

Boxing :- Boxing is an implicit conversion of a value type to the type object type

Eg:-

Consider the following declaration of a value-type variable:

int i = 123;

object o = (object) i;

Boxing Conversion

UnBoxing :- Unboxing is an explicit conversion from the type object to a value type

Eg:

int i = 123;          // A value type

object box = i;       // Boxing

int j = (int)box;     // Unboxing

What is Value type and refernce type in .Net?.

Value Type : A variable of a value type always contains a value of that type. The assignment to a variable of a value type creates a copy of the assigned value, while the assignment to a variable of a reference type creates a copy of the reference but not of the referenced object.

The value types consist of two main categories:

* Stuct Type

* Enumeration Type

Reference Type :Variables of reference types, referred to as objects, store references to the actual data. This section introduces the following keywords used to declare reference types:

* Class

* Interface

* Delegate

This section also introduces the following built-in reference types:

* object

* string

Please read all the post in the Dotnet Framework series.

Reference : Dilip Kumar Jena ( https://mstechexplore.wordpress.com )

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2 thoughts on “DotNet FrameWork – What Is Boxing And Unboxing,Value Type and Reference Type – Day 17 of 30

  1. Pingback: DotNet FrameWork – Dot Net Basics Complete Series Reference – Day 0 of 30 « Exploring Dot Net with Dilip Kumar Jena

  2. Pingback: DotNet FrameWork – Dot Net Basics Complete Series Reference – Day 0 of 30 « Exploring Dot Net with Dilip Kumar Jena

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