VB Basic Course: Chapter 1, Section 1, Basic Concepts of VB.

1. 1 Visual Basic overview

1. What is Visual Basic?

Visual Basic (VB for short) is a general object-based programming language developed by Microsoft.

"Visualization" refers to the method of developing a graphical user interface (GUI)-you don't need to write a lot of code to describe the appearance and location of interface elements, just add pre-established objects at a point on the screen.

"Basic" refers to Basic (beginner's general symbol instruction code) language, which is the most widely used language in the history of computing technology development. Visual BASIC is further developed on the basis of the original BASIC language. So far, it contains hundreds of statements, functions and keywords, many of which are directly related to Windows GUI. Professionals can use Visual Basic to realize the functions of any other Windows programming language, while beginners only need to master a few keywords to build practical applications. Visual Basic Scripting Edition (VBScript) is a widely used scripting language, which is a subset of Visual Basic language. It can be embedded in HTML language to design web pages, such as ASP(Active Server Page) files.

VB is easy to learn, universal and widely used.

2. The function of 2.VB

VB can be used to develop multimedia, database, network, graphics and other applications.

Data access allows the establishment of databases and front-end applications, as well as adjustable server-side components for most database formats, including Microsoft SQL Server and other enterprise databases.

With the help of ActiveX(TM) technology, you can use the functions provided by other applications, such as Microsoft Word word processor, Microsoft Excel spreadsheet and other Windows applications.

The Internet is powerful, and it is easy to access documents and applications through the Internet or an intranet within an application, or to create an Internet server application.

The complete application is true. Exe file, which can be distributed freely.

3. The development of 3.VB

VB is developed with Windows operating system, and the widely used versions in China are VB4.0, VB5.0 and VB6.0.

1995 launched VB4.0 to cooperate with the advent of WIN95. It can be used to write 16-bit applications on WIN3. 32-bit applications on X platform and WIN95 platform. VB5.0 is mainly used to write 32-bit applications on WIN95 platform. Compared with VB4.0, it mainly expands the functions of database, ActiveX and Internet. 1998 cooperated with WIN98 to launch VB6.0, which further strengthened the functions of database, internet and creating controls.