Using the .NET Collection Classes

This tutorial which is the first part of a 2 part series will give an introduction to the Collection classes built-into the .NET Frameworks System.Collections namespace; these classes are used to hold collections of values or objects in memory and are commonly known as arrays. The three commonly used collection classes are ArrayList, Hashtable and SortedList, this tutorial will serve as an introduction to these classes. An example use for these collection classes could be to store user specific data in a collection class that can itself be stored in a session variable allowing data to be shared easily across multiple pages.
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This tutorial will cover the following topics:
  • An introduction to the System.Collections Classes
  • An introduction to ArrayList
  • Example of ArrayList in action
  • An introduction to Hashtable
  • Example of Hashtable in action
  • An introduction to SortedList
  • Example of SortedList in action

Kevin Marshall

Kevin MarshallI live in Perth, Scotland and am senior programmer with Ltd. I have been involved in computer programming since 1990, web based programming using ASP since 1997 and have been building ASP.NET applications since ASP.NET Beta 2 was released.

I have been an avid Dreamweaver user since Version 1 was launched and with the release of MX have moved into developing extensions. WebXeL run a website dedicated to the development of free and commercial Dreamweaver MX extensions for ASP.NET, the site can be found at

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