What is index-based I/O for ArrayList collections in C#?

The ArrayList class represents an ordered collection of objects that can be individually indexed. It is an alternative to arrays.

The following table lists some common attributes of the ArrayList class:

Serial number	Attributes and descriptions
1	Capacity Gets or sets the number of elements that the ArrayList can contain.
2	Count Get the number of elements actually contained in the ArrayList.
3	IsFixedSize Gets a value indicating whether the ArrayList has a fixed size.
4	IsReadOnly Gets a value indicating whether the ArrayList is read-only.
5	#Item Gets or sets the element at the specified index.

The following is an example that shows how to use ArrayList in C# and find the capacity. The default capacity is 4.

Example

using System;
using System.Collections;

namespace Demo {
   class Program {
      static void Main(string[] args) {
         ArrayList x = new ArrayList();

         x.Add(45);
         x.Add(53);
         x.Add(12);
         x.Add(88);

         Console.WriteLine("Capacity: {0} ", x.Capacity);
      }
   }
}

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