Introduction
of VB .Net
Visual Basic .NET
(VB.NET) is an object-oriented programming language that can be
considered as an evolution of the classic Visual Basic (VB) which is
implemented on the .NET Framework. Visual Basic .Net was developed to make Web services
applications easier to develop. According to Microsoft, VB .NET was
reengineered, rather than released as VB 6.0 with added features, to facilitate
making fundamental changes to the language. VB.NET is the first fully
object-oriented programming (OOP) version of Visual Basic, and as such,
supports OOP concepts such as abstraction, inheritance, polymorphism, and
aggregation.
History
of VB .Net
Visual Basic .NET was
released alongside Visual C# and ASP.NET in 2002.Visual Basic .NET should be
considered as just another version of Visual Basic 6.0.Microsoft supplies an
automated VB6-to-VB.NET converter with Visual Studio .NET, which has improved
over time, but it cannot convert all code, and almost all non-trivial programs
will need some manual effort to compile. Most will need a significant level of
code refectory to work optimally. Visual Basic programs that are mainly
algorithmic in nature can be migrated with few difficulties.
Versions
of VB .Net
|
Version
|
Date
|
|
Visual Basic .NET
(VB 7)
|
February 2002
|
|
Visual Basic .NET
2003 (VB 7.1)
|
2003
|
|
Visual Basic 2005
(VB 8.0)
|
2005
|
|
Visual Basic 2008
(VB 9.0)
|
19 November 2007
|
|
Visual Basic 2010
(VB 10.0)
|
April 2010
|
Important
features of VB .Net -
- Fully object oriented programming.
- Designed to .NET Framework.
- Structured error handling capabilities.
- Inherent support for XML & Web Services.
- Better windows applications with Windows
Forms.
- Console capabilities of VB.NET.
- Web capabilities with Web Forms.
- Better database programming approach with ADO.
NET.
- Interpretability with other .NET complied
languages.
- Immense power of tools & controls
(including Server Controls).
Architecture
of VB.NET
Advantage
of VB .Net -
- VB.NET provides managed code execution that
runs under the Common Language Runtime (CLR), resulting in robust, stable
and secure applications. All features of the .NET framework are readily
available in VB.NET.
- VB.NET uses XML to transfer data between the
various layers in the DNA Architecture i.e. data are passed as simple text
strings.
- Powerful Windows-based Applications.
- Building Web-based Applications.
- Simplified Deployment.
- Powerful, Flexible, Simplified Data Access.
- Improved Coding.
- Direct Access to the Platform.
- Full Object-Oriented Constructs.
- XML Web Services.
- Mobile Applications.
- COM Interoperability.
- Reuse Existing Investments.
- Upgrade Wizard
Disadvantage
of VB .Net -
- Cannot handle pointers directly
- Large Talent Pool
- Intermediate Language (IL) compilation
- Just-In-Time (JIT) compiler
- Large Libraries
Getting Started with Visual Basic .NET
Launch your Visual Basic .NET or Visual Studio software. When the
software first loads, you'll see a screen something like this one, if you have
the 2008 version:
Or this one, for VB NET 2010 users:
If you have VB NET 2012, your opening screen will look like this:
There's a lot happening on the start page. But basically, this is where
you can start a new project, or open an existing one. The first Tab, Projects,
is selected. At the moment, the area labelled "Open an Existing
Project" is blank. This is what you'll see when you run the software for
the first time (because you haven't created a project yet). When you create a
project, the Name you gave it will be displayed on this page, as a hyperlink.
Clicking the link will open the project.
At the bottom of the screen, there are two buttons: "New
Project" and "Open Project". To get started, click the "New
Project" button. When you do, you'll see this dialogue box appear in the
version 2008:
Or this one for version 2010:
In the 2012 version, you'll see this:
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