What are namespaces and what is the importance of them?

A namespace is a collection of different classes which are built into .NET. This very much like packages in Java. You need to import these namespaces to work with any .NET language. All the functionality of .NET is within these namespaces. The main namespace is the System namespace and all other namespaces are built into this System namespace.

Some of these namespaces and what they are used for are summarized below.

• System: Includes essential classes and base classes that define commonly used Data Types, events, interfaces, attributes etc.
• System.Data: Includes classes that make up ADO.NET and allows to build data-handling components.
• System.Drawing: Provides access to graphics that gives access to drawing methods.
• System.IO: Provides access to writing data streams and Files.
• System.Net: Provides interface to many protocols used on the Internet.
• System.Security: Includes classes to support the security system.
• System.Threading: Includes classes that support threading.
• System.Web.Services: Includes classes for creating and using Web Services.
• System.Windows.Forms.: Includes classes for creating windows based applications.

Written by Sandeep Mogulla, Webmaster at www.startvbdotnet.com

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