Boxing and Unboxing

Boxing:

Boxing is the process of converting a value type data type to the object or to any interface data type which is implemented by this value type. When the CLRlic boxes a value means when CLR is converting a value type to Object Type, it wraps the value inside a System.Object and stores it on the heap area in application domain.

Example:
public void fnBoxing()
{
       int i=5;
       object o=i; //implicit Boxing
}

Unboxing:

Unboxing is also a process which is used to extract the value type from the object or any implemented interface type. Boxing may be done implicitly, but unboxing have to be explicit by code.

Example:
public void fnUnboxing()
{ 
   object  o=5;
   int i=(int)o;//explicit Unboxing
 }

Comments

Post a Comment

Popular posts from this blog

.NET Design Patterns Tutorial - MVC, MVP and MVVM Design Patterns

MVC Pattern MVC stands for Model-View-Controller. It is a software design pattern which was introduced in 1970s. Also, MVC pattern forces a separation of concerns, it means domain model and controller logic are decoupled from user interface (view). As a result maintenance and testing of the application become simpler and easier. MVC design pattern splits an application into three main aspects: Model, View and Controller Model The Model represents a set of classes that describe the business logic i.e. business model as well as data access operations i.e. data model. It also defines business rules for data means how the data can be changed and manipulated. View The View represents the UI components like CSS, jQuery, html etc. It is only responsible for displaying the data that is received from the controller as the result. This also transforms the model(s) into UI. Controller The Controller is responsible to process incoming requests. It receives input fro...
Read more

C# Coding Standards and Naming Conventions

1. use PascalCasing for class names and method names. public Class TestClass {        public void TestMethod()       {            //--------------       } } 2 use camelCasing for method arguments and local variables. public Class TestClass {        public void TestMethod(UserDetail userDetail)       {            int usersCount=userDetail.items.count             //-----       } } 3. use PascalCasing for abbreviations 3 characters or more (2 chars are both uppercase)     HtmlHelper htmlHelper;     FtpTransfer ftpTransfer;     UIControl uiControl; Why: consistent with the Microsoft's .NET Framework. Caps would grap visually too much attention. 4. use...
Read more

What is the difference between C and C++?

Image
The major difference between C and C++ is that C is a procedural programming language and does not support classes and objects, while C++ is a combination of both procedural and object oriented programming language; therefore C++ can be called a hybrid language. The following table presents differences between C and C++ in detail. Difference between C and C++ C C++ C was developed by Dennis Ritchie between 1969 and 1973 at AT&T Bell Labs. C++ was developed by Bjarne Stroustrup in 1979 with C++'s predecessor "C with Classes". When compared to C++, C is a subset of C++. C++ is a superset of C. C++ can run most of C code while C cannot run C++ code. C supports procedural programming paradigm for code development. C++ supports both procedural and object or...
Read more