Indexing with an Integer Index

/*
A Programmer's Introduction to C# (Second Edition)
by Eric Gunnerson

Publisher: Apress  L.P.
ISBN: 1-893115-62-3
*/

// 19 - Indexers and Enumerators\Indexing with an Integer Index
// copyright 2000 Eric Gunnerson
using System;
using System.Collections;
class DataValue
{
    public DataValue(string name, object data)
    {
        this.name = name;
        this.data = data;
    }
    public string Name
    {
        get
        {
            return(name);
        }
        set
        {
            name = value;
        }
    }
    public object Data
    {
        get
        {
            return(data);
        }
        set
        {
            data = value;
        }
    }
    string    name;
    object data;
}
class DataRow
{
    public DataRow()
    {
        row = new ArrayList();
    }
    
    public void Load() 
    {
        /* load code here */ 
        row.Add(new DataValue("Id", 5551212));
        row.Add(new DataValue("Name", "Fred"));
        row.Add(new DataValue("Salary", 2355.23m));
    }
    
    // the indexer
    public DataValue this[int column]
    {
        get
        {
            return((DataValue) row[column - 1]);
        }
        set
        {
            row[column - 1] = value;
        }
    }
    ArrayList    row;    
}
public class IndexingwithanIntegerIndex
{
    public static void Main()
    {
        DataRow row = new DataRow();
        row.Load();
        Console.WriteLine("Column 0: {0}", row[1].Data);
        row[1].Data = 12;    // set the ID
    }
}

1.	indexed properties
2.	Indexer with complex logic
3.	Use an indexer to create a fail-soft array
4.	Overload the FailSoftArray indexer
5.	Indexers don't have to operate on actual arrays
6.	Two dimensional indexer
7.	A two-dimensional fail-soft array
8.	Create a specifiable range array class
9.	Define indexer
10.	Indexer: allow array like index
11.	illustrates the use of an indexer 1
12.	Implements an indexer in a class
13.	Illustrates the use of an indexer
14.	Implements an indexer and demonstrates that an indexer does not have to operate on an array
15.	C# Properties and Indexers
16.	Indexing with an String Index
17.	Indexing with Multiple Parameters
18.	Return class object from indexer

Indexing with an Integer Index : Indexer « Class Interface « C# / C Sharp

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