Classes in C#.NET

Paint QR Code in C#.NET Classes
5 Classes
Making QR Code 2d Barcode In Visual C#
Using Barcode generation for VS .NET Control to generate, create QR Code ISO/IEC18004 image in VS .NET applications.
You briefly saw in 1 how to declare a new class called HelloWorld In 2, you learned about the built-in primitive types included with C# Since you have now also learned about control flow and how to declare methods, it is time to discuss defining your own types This is the core construct of any C# program, and the complete support for classes and the objects created from them is what defines C# as an object-oriented language
Bar Code Creation In C#
Using Barcode generation for .NET framework Control to generate, create barcode image in .NET framework applications.
[View full size image]
QR Code ISO/IEC18004 Creator In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
This chapter introduces you to the basics of object-oriented programming using C# A key focus is on how to define classes, which are the templates for objects themselves All of the constructs of structured programming from the previous chapters still apply within objectoriented programming However, by wrapping those constructs within classes, you can create larger, more organized programs that are more maintainable The transition from structured, control-flowbased programs to object-oriented programs somewhat revolutionized programming because it provided an extra level of organization The result was that smaller programs were simplified somewhat; but more importantly, it was possible to create much larger programs because the code within those programs was better organized One of the key advantages of object-oriented programming is that instead of creating new programs entirely from scratch, you can assemble a collection of existing objects from prior work, extending the classes with new features, adding more classes, and then reassembling everything to provide new functionality Readers unfamiliar with object-oriented programming should read the Beginner Topic blocks for an introduction The general text outside of the Beginner Topics focuses on using C# for object-oriented programming with the assumption that readers are already familiar with object-oriented methodology This chapter delves into how C# supports encapsulation through its support of constructs such as classes, properties, and access modifiers (methods were covered in the last chapter) The next chapter builds on this foundation with the introduction of inheritance and the polymorphism that
Denso QR Bar Code Generator In .NET Framework
Using Barcode encoder for Visual Studio .NET Control to generate, create QR Code image in .NET framework applications.
object-oriented programming enables
QR Code Generator In Visual Basic .NET
Using Barcode drawer for .NET framework Control to generate, create QR Code ISO/IEC18004 image in VS .NET applications.
Beginner Topic: Object-Oriented Programming
Bar Code Drawer In Visual C#
Using Barcode generation for .NET framework Control to generate, create bar code image in .NET framework applications.
The key to programming successfully today is in the ability to provide organization and structure to the implementation of complex requirements fulfilled in larger and larger applications Object-oriented programming provides one of the key methodologies in accomplishing this, to the point that it is difficult for object-oriented programmers to envision transitioning back to structured programming, except for the most trivial programs The most fundamental construct to object-oriented programming is the class or object itself These form a programming abstraction, model, or template of what is often a realworld concept The class OpticalStorageMedia, for example, may have an Eject() method on it that causes a CD/DVD to eject from the player The OpticalStorageMedia class is the programming abstraction of the real-world object of a CD Classes are the foundation for three principal characteristics of object-oriented programming: encapsulation, inheritance, and polymorphism
Bar Code Generator In Visual C#.NET
Using Barcode drawer for .NET Control to generate, create bar code image in VS .NET applications.
Encapsulation
Code-39 Creator In C#
Using Barcode creator for VS .NET Control to generate, create Code 39 Full ASCII image in .NET framework applications.
Encapsulation allows you to hide detail The detail can still be accessed when necessary, but by intelligently encapsulating the detail, large programs are easier to understand, data is protected from inadvertent modification, and code is easier to maintain because the effects of a code change are bound to the scope of the encapsulation Methods are examples of encapsulation Although it is possible to take the code from a method and embed it directly inline with the caller's code, refactoring of code into a method provides encapsulation benefits
Code 128A Maker In Visual C#.NET
Using Barcode creation for VS .NET Control to generate, create Code 128 Code Set C image in Visual Studio .NET applications.
Inheritance
Data Matrix 2d Barcode Maker In Visual C#
Using Barcode creator for .NET Control to generate, create ECC200 image in Visual Studio .NET applications.
Consider the following example: A DVD is a type of optical media It has a specific storage capacity along with the ability to hold a digital movie A CD is also a type of optical media but it has different characteristics The copyright implementation on CDs is different from DVD copyright protection, and the storage capacity is different as well Both CDs and DVDs are different from hard drives, USB drives, and floppy drives (remember those ) All fit into the category of storage media, but each has special characteristics, even for fundamental functions like the supported filesystems and whether instances of the media are read-only or read-write Inheritance in object-oriented programming allows you to form "is a" relationships between these similar but different items It is a reasonable assumption that a DVD "is a" type of storage media and that a CD "is a" type of storage media, and as such, that each has storage capacity Similarly, CDs and DVDs have "is a" relationships to the optical media type, which in turn has an "is a" relationship with the storage media type If you define classes corresponding to each type of storage media mentioned, you will have defined a class hierarchy, which is a series of "is a" relationships The base type, from which all storage media derive, could be the class StorageMedia As such, CDs, DVDs, hard drives, USB drives, and floppy drives are types of StorageMedia However, CDs and DVDs don't need to derive from StorageMedia directly Instead, they can derive from an intermediate type, OpticalStorageMedia You can view the class hierarchy
Data Matrix 2d Barcode Maker In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
Create EAN13 In VS .NET
Using Barcode creator for .NET framework Control to generate, create GTIN - 13 image in .NET framework applications.
Barcode Printer In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Painting UPC-A In .NET
Using Barcode generation for ASP.NET Control to generate, create UPC A image in ASP.NET applications.
Data Matrix ECC200 Printer In Java
Using Barcode drawer for Java Control to generate, create DataMatrix image in Java applications.
Printing Code 128A In VB.NET
Using Barcode generation for .NET framework Control to generate, create USS Code 128 image in .NET framework applications.