1.ArrayList represents the ordered collection of an object or it
can be said that it is individually indexed where as Hash table uses
a key to access the elements in the collection.
2.ArrayList is used when you want to access the
elements by using index where as Hash table is used when you
must access elements by using an index.
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Array list
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Hash table
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using System;
using System.Collections;
class Program
{
static void Main()
{
// Create an ArrayList and add two ints.
ArrayList list = new ArrayList();
list.Add(5);
list.Add(7);
// Use ArrayList with method.
Example(list);
}
static void Example(ArrayList
list)
{
foreach (inti in list)
{
Console.WriteLine(i);
}
}
}Output
5
7
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using System;
using System.Collections;
class Program
{
static void Main()
{
Hashtablehashtable = new Hashtable();
hashtable[1] = "One";
hashtable[2]
= "Two";
hashtable[13] = "Thirteen";
foreach (DictionaryEntry entry in hashtable)
{
Console.WriteLine("{0},
{1}", entry.Key, entry.Value);
}
}
}
Result
13, Thirteen
2, Two
1, One
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