Complete set: Intro to C - Bill Buchanan

10.5 Hiding members
We can hide the properties of our classes so that they may not be directly accessed.
Many object‐oriented practitioners regard this as good practice.
Before protection
public class Country
{
public string name;
public string region=null;
public int area=-1;
public int population=-1;
public long gdp=-1;
After protection
public class Country
{
private string name;
private string region;
private int area;
private int population;
private long gdp;
duction to .NET
Intro
public string Name{get{return this.name;}}
public string Region{get{return this.region;}}
public int Area{get{return this.area;}}
public int Population
{
get{return this.population;}
set{this.population=value;}
}
public long Gdp{get{return this.gdp;}}
In this case have hidden the private members – they can only be accessed from
within the Class. We have exposed members with slightly different names. From
outside the class we may refer to uk.Name but not uk.name (where uk is a Country).
Also we have made most of these exposed properties read only.
The Population member is writeable – this means we can assign uk.Population just
as we used to be able to do.
Which of these is permitted from outside the class
int a = uk.population;
string s = uk.Name;
long b = uk.Gdp; uk.Population = 58000000;
Agilent .NET Course: Module 10,page 7