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Listing 10 . Pause until the user presses any key.

Console.ReadKey(); }//end Main}//end class Props01

The end of the program

Listing 10 signals the end of the Main method, the end of the class named Props01 , and the end of the program. When the user presses a key, the black screen disappears from the desktop and the programterminates.

Run the program

I encourage you to copy the code from Listing 11 . Use that code to create a C# console application. Build and run the program. Experiment with the code,making changes, and observing the results of your changes. Make certain that you can explain why your changes behave as they do.

Run my program

Click here to download a zip file containing my version of the program. Extract the folder named Props01 from the zip file and save it somewhere on your disk. Start Visual C# 2010 Express and select Open Project... from the File menu. Navigate to the project folder and select the file with the extension of .sln . This should cause the project to open and be ready to run or debug as describedin the earlier module titled Getting Started .


You learned about abstraction, abstract data types, encapsulation, information hiding, class member access control, instance variables, localvariables, class variables, reference variables, primitive variables, how C# identifies properties, and how to set and get properties in C#.

You also learned about public accessor methods, public manipulator methods, data validation by property setters and public accessor methods, and a few otherthings along the way.


This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Xna0106-Encapsulation in C#
  • File: Xna0106.htm
  • Published: 02/24/14

Financial : Although the Connexionssite makes it possible for you to download a PDF file for this module at no charge, and also makes it possible for you topurchase a pre-printed version of the PDF file, you should be aware that some of the HTML elements in this module may not translate well intoPDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version of the module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale on Amazon.com showing me as the author. Ineither receive compensation for those sales nor do I know who does receive compensation. If you purchase such a book, please beaware that it is a copy of a module that is freely available on cnx.org and that it was made and published withoutmy prior knowledge.

Affiliation :: I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

Complete program listing

A complete listing of the C# program discussed in this module is provided in Listing 11 .

Listing 11 . The program named Props01.

/*Project Props01 Copyright 2009, R.G.BaldwinThis program is designed to explore and explain the use of encapsulation and properties in C#.Program output is: text: Quitcolor: Red color: Bad colorheight: 20 double height: 40height: 0 *********************************************************/using System; namespace Props01{class Props01{ static void Main(string[]args){ TargetClass obj = new TargetClass();//Access a public instance variable obj.text = "Quit";Console.WriteLine("text: " + obj.text); //Call public accessor methodsobj.setColor("Red"); Console.WriteLine("color: " + obj.getColor());//Call public accessor methods again with an // invalid input value.obj.setColor("Green"); Console.WriteLine("color: " + obj.getColor());//Set and get a property obj.height = 20;Console.WriteLine("height: " + obj.height); //Call manipulator method and display results.obj.doubleHeight(); Console.WriteLine("double height: " + obj.height);//Set and get the property again with an invalid // input value.obj.height = 100; Console.WriteLine("height: " + obj.height);//Pause until user presses any key.Console.ReadKey(); }//end Main}//end class Props01 //====================================================//public class TargetClass{ //A public instance variable - not good practicepublic string text; //This would be a property named color in Java, but// not in C# private string colorData = "";public void setColor(string data){ //Validating codeif(data.Equals("Red") || data.Equals("Blue")){ //Accept incoming data valuecolorData = data; }else{//Reject incoming data value colorData = "Bad color";}//end if-else }//end setColor//--------------------------------------------------// public string getColor(){return colorData; }//end getColor//--------------------------------------------------// //This is a C# property named heightprivate int heightData; public int height{get{ return heightData;}//end get set{//Validating code if(value<84){ heightData = value;}else{ heightData = 0;}//end else }//end set}//end height property //--------------------------------------------------////This is a manipulator method public void doubleHeight(){heightData *= 2; }//end doubleHeight//--------------------------------------------------// }//end TargetClass}//end namespace


Questions & Answers

what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
analytical skills graphene is prepared to kill any type viruses .
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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