the "this" reference & indexers

[BobLewiston]

Can anybody give me a hint about how to put these two techniques together? I can use the "this" reference to control access to the private fields of an individual object:

using System;
namespace MyNamespace
{
class Program
{
static void Main ()
{
Citizen citizen = new Citizen ();


citizen.Name = "Larry Fine";
citizen.Age = 89;


Console.WriteLine ("{0}, {1}\n\n\n", citizen.Name, citizen.Age);
}
}


class Citizen
{
private string name;
private int age;


public string Name
{
get { return name; }
set { name = value; }
}


public int Age
{
get { return age; }
set { age = value; }
}
}
}

And I can use indexers to make an array of objects:

using System;
namespace MyNamespace
{
class Program
{
static void Main ()
{
Citizen citizen = new Citizen ();


citizen [0] = "Larry Fine";
citizen [1] = "Buster Douglas";
citizen [2] = "Mortimer Snerd";
citizen [3] = "Horace Greeley";
citizen [4] = "Ornette Coleman";


Console.WriteLine ("{0}\n{1}\n{2}\n{3}\n{4}\n", citizen [0],
citizen [1], citizen [2], citizen [3], citizen [4]);
}
}


class Citizen
{
private string [] name = new string [5];


public string this [int i]
{
get { return name ; }
set { name = value; }
}
}
}

But I can't figure out how to put the two techniques together to control access to the private fields of an array of objects. The solution is probably staring me right in the face, but I don't see it. Any help?

P.S. This is a console application, obviously.

P.P.S. BTW, what happened to all my indentation?

[Murtan]

If you post your code with code tags, the whitespace doesn't go away.

When posting c# code, please use c# code tags
[code=c#] // Your code here

[/code]

About the private members and array topic, I don't think I understand what you're asking.

You can do things like:

Console.WriteLine ("{0}, {1}\n\n\n", citizen[3].Name, citizen[3].Age);

Is that what you were trying to ask about?

[Ramy Mahrous]

Great Murtan :)

[miculnegru]

First off, you are doing it wrong, read about arrays and list.

You have this class { notice i added a constructor }

class Citizen
{
private string name;
private int age;

public string Name
{
get { return name; }
set { name = value; }
}

public int Age
{
get { return age; }
set { age = value; }
}

public Citizen(int name,int age)
{
 // "this.name" refers to the private field while "name" refers to the 
 // parameter of the constructor.
  this.name = name;
  this.name = age;
}
}
}

then you have your main

using System;
namespace MyNamespace
{
class Program
{
static void Main ()
{
Citizen citizen = new Citizen ();

citizen.Name = "Larry Fine";
citizen.Age = 89;

Console.WriteLine ("{0}, {1}\n\n\n", citizen.Name, citizen.Age);
}
}

then you started the next class that's when you got it wrong. read about List and Array's.

not try this main :

using System;
using System.Collections.Generic;

namespace MyNamespace
{
class Program
{
static void Main ()
{
List<Citizen> citizens = new List<Citizen>();

citizens.add(new Citizen("Name-1",13));
citizens.add(new Citizen("Name-2",35));
citizens.add(new Citizen("Name-3",38));


Console.WriteLine ("Name : '{0}', Age : '{1}'\n", citizens[0].Name, citizens[0].Age);
Console.WriteLine ("Name : '{0}', Age : '{1}'\n", citizens[1].Name, citizens[1].Age);
Console.WriteLine ("Name : '{0}', Age : '{1}'\n", citizens[2].Name, citizens[2].Age);

// So now you have this output :
// 
//  Name : 'Name-1' , Age : '13' 
//  Name : 'Name-2' , Age : '35 
//  Name : 'Name-3 , Age : '38'

}
}