The Demand for windows based application program is increasing at growth rate of 1000% times. Today in fast changing world of computers, Visual Basic Programming Language is widely used for windows based application programs. TERABYTE ACADEMY is teaching Visual Basic programming Language Since it introduced in market.

TERABYTE COMPUTER ACADEMY is providing Computer training for Visual Basic Programming to College students according to their syllabus prescribed by the most of Univercities & Colleges.Our way of teaching purely based 100% practical approach.

Visual Basic 6.0 is a rapid application development environment that gives developers the tools to quickly develop Win32 applications. A Microsoft Visual Basic 6 application can access .NET class libraries, but to do so, it must go through an interoperability layer, known as a client callable wrapper. Learn how to create client callable wrappers

Microsoft's Visual Basic is one of the most popular programming languages in use today. VB programmers are in great demand and earn extremely high wages. VB is also an excellent tool for software entrepreneurs who wish to build their own Windows applications for resale. This course employs a nuts-and-bolts approach to teaching you how to build Windows applications with one of the most robust visual development tools on the market. By the time you complete this course you will have learned how to write, debug, and package a VB application that looks as good as anything you've seen in a computer store -- and works as well, too.

Language features
 
A typical session in Microsoft Visual Basic 6Visual Basic was designed to be easy to learn and use. The language not only allows programmers to easily create simple GUI applications, but also has the flexibility to develop fairly complex applications as well. Programming in VB is a combination of visually arranging components or controls on a form, specifying attributes and actions of those components, and writing additional lines of code for more functionality. Since default attributes and actions are defined for the components, a simple program can be created without the programmer having to write many lines of code. Performance problems were experienced by earlier versions, but with faster computers and native code compilation this has become less of an issue.

Although programs can be compiled into native code executables from version 5 onwards, they still require the presence of runtime libraries of approximately 2 MB in size. This runtime is included by default in Windows 2000 and later, but for earlier versions of Windows it must be distributed together with the executable.

Forms are created using drag and drop techniques. A tool is used to place controls (e.g., text boxes, buttons, etc.) on the form (window). Controls have attributes and event handlers associated with them. Default values are provided when the control is created, but may be changed by the programmer. Many attribute values can be modified during run time based on user actions or changes in the environment, providing a dynamic application. For example, code can be inserted into the form resize event handler to reposition a control so that it remains centered on the form, expands to fill up the form, etc. By inserting code into the event handler for a keypress in a text box, the program can automatically translate the case of the text being entered, or even prevent certain characters from being inserted.

Visual Basic can create executables(EXE), ActiveX controls, DLL files, but is primarily used to develop Windows applications and to interface web database systems. Dialog boxes with less functionality (e.g., no maximize/minimize control) can be used to provide pop-up capabilities. Controls provide the basic functionality of the application, while programmers can insert additional logic within the appropriate event handlers. For example, a drop-down combination box will automatically display its list and allow the user to select any element. An event handler is called when an item is selected, which can then execute additional code created by the programmer to perform some action based on which element was selected, such as populating a related list.

Alternatively, a Visual Basic component can have no user interface, and instead provide ActiveX objects to other programs via Component Object Model (COM). This allows for server-side processing or an add-in module.

The language is garbage collected using reference counting, has a large library of utility objects, and has basic object oriented support. Since the more common components are included in the default project template, the programmer seldom needs to specify additional libraries. Unlike many other programming languages, Visual Basic is generally not case sensitive, although it will transform keywords into a standard case configuration and force the case of variable names to conform to the case of the entry within the symbol table entry. String comparisons are case sensitive by default, but can be made case insensitive if so desired.

 

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