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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

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
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
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Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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