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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

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
Do somebody tell me a best nano engineering book for beginners?
s. Reply
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?
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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit 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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