In this tutorial you'll find out how to validate a TextBox and RadioButtonList control on a webform using RequiredFieldValidator, which will show a warning and stop the submission of the form if a required field has no value.

Explains what is validation, why validation of user input is so important and how to use ASP.NET 2.0 validation controls to build robust Web applications.

This is the first tutorial as part of the Visual Basic .NET 2005 Training. In this tutorials we will be learning about the basics of The .NET Framework Architecture, The .NET vision, Common Language Runtime (CLR), .NET Framework Class Library and Microsoft Intermediate Language (MSIL). It's very important to learn the basics before we actually start with the Programming. The .NET framework is a software technology that is directed towards connecting information, people, systems and devices seamlessly. The high level of software integration that has been attempted through use of XML web services enables the creation of small, discrete, building block types of applications. These applications are connected to other applications over the Internet.

VB.NET 2005 Free Training : The .NET Framework Architecture Part 2. In this tutorial of The .NET Framework Architecture Part 2 we will learn about Just-In-Time (JIT) compilation, Assemblies, native assemblies, Global Assembly Cache (GAC) and Comparison of VB.NET, C#, and J#.

VB.NET 2005 Free Training : Event Handling In Visual Basic .NET 2005 - Introduction to Event Handling, One of the most useful capabilities of the OOP Languages is their inbuilt ability to be aware of a large number of events like MouseOver, MouseClick, and so on so that we can write codes to react to any event that we are interested. This is made possible by the rich set of classes that have been built in the .NET Framework.

Exploring the Forms Designer generated code - As you create a new project in the Visual Basic, the IDE generally automatically adds lots of lines of code on its own. Visual Basic 2005 comes with an option to skip over this behavior of the Visual Basic IDE. The default option comes with this behavior enabled.

VB.NET 2005 Free Training : Introducing Windows Forms. We will be learning in the next series of articles as part of VB.NET 2005 Free Training : Introducing Windows Forms in the following topics with code samples and screen shots.

VB.NET 2005 Free Training : Visual Studio.NET Namespaces - The .NET Framework class library has thousands of classes which are needed for developing and deploying solutions. In order to organize all those classes for ease of use .NET Framework uses namespaces. This Gives the Classes their own space and prevents conflicts between the various names in these classes. For instance if two classes contain a method Paint(), then to avoid conflicts in names we can place these classes in two different namespaces. Thus namespaces allow classes to be grouped in a consistent, hierarchical manner.

VB.NET 2005 Free Training: Building graphical interface elements - Building graphical interface elements by using the System.Drawing namespace, In this tutorial we will learn about Graphics Object, The Windows Forms Coordinate System, Drawing Text on a Form, Drawing Shapes and Working with images.

VB.NET 2005 Free Training: Differences between VB.NET 1.0 and VB.NET 2.0: VB.NET 2005 comes with a number of enhancements. The IntelliSense Code snippets, the Windows Forms designer updates, IntelliSense filtering, debugger data tips, exception Assistant etc make the software a pleasure to work with. The language has been spruced up with generics, unsigned types, Operator overloading etc.