Visual Basic (VB) is one kind of the event drive programming language assisting exploitation environment from Microsoft Company. From that any standard comes, VB is a language used the most widely in the world. It is originated from BASIC. VB owns the artwork consumer interface (GUI) with fleetness application develops (RAD) system, it can link database easy with DAO, RDO, ADO , or establish ActiveX control easy, and the programmer can be build relaxed.

Develop history

Microsoft Company has debuted Visual Basic 1.0 in 1991, this has aroused great sensation on that time. This change linking the programming language and progress of consumer interface was called Tripod(some moment is called Ruby), It was completed by Alan · Cooper first. A lot of expert regarded the VB’s appearing as the software epoch-making significance of history. Regarding our sight now, The VB1.0 function is very weak in fact. But on that time, it is the first “Can Visible " programming software. This can be used carrying out software creation on glad to attempt in VB platform. Microsoft also loses no time in debuting VB2.0, VB3.0 and 4.0 three editions in succession within 4 years. From the VB3 beginning, Microsoft made the drive of ACCESS database into VB; this improves the program of VB data base greatly. From the VB4 beginning, VB has also led into object-oriented programming thought. The function of VB is powerful, studies simplicity. VB has led into  \" control \" concept , It make it possible that we can use a lot of finished VB program directly.

In 2002. Visual basic NET 2002 (v7.0) came out, And then Visual Basic NET 2003 (v7.1) came out in next year, On November 7 , 2005 ,Visual basic 2005 (v8.0) came out too. At the same time, Visual Basic 2005's free and simplification edition appeared, It was used by Visual Basic beginner and student.

VB 2005's notable merit is can be compiled buttons of XP style directly, and other control. But, small procedure of it will occupy almost 10 MB memory. Through several   years’ development, it already became one kind of professional exploitation language and environment. Consumer available establishes Windows procedure rapidly by VB; it also can compile powerful horizontal enterprise customer data base application now. VB is able to attract more praise and criticism, also is able to be used continue by extensive consumer and programmer. It is fit to be used to develop the procedure specifically for the terminal owning the amicable interface, but is unfit to develop other procedure.

Language characteristic property

VB central idea is the easy to be used by programmer, regardless new hand or an expert. The GUI system has used by VB to build application simple; It also can develop pretty complicated procedure. The VB procedure is one kind of the unity arranging for owing to Visualization of the window body module, It allocate attribute and method forming increasing a code. Because of attribute and method already have definited, therefore, The programmer can accomplish a simple procedure without number code.

The window increasing and changing can be used with drag and drop technology to come true. One tool case arranging full control is used to demonstrate control available. Every control has its event and character. When we establish control frame, The value tacitly approve, but the programmer also can be changed. Much value can carry out the dynamic procedure with consumer's action and modification during the period of working.

VB procedure can contain one or many other window bodies, The VB module both can own the consumer interface and not. The rubbish coming VB to be carried out the method using a parameter to secretly scheme, this contains the marriage partner who has a great quantity, provides be geared to the needs of marriage partner fundamental support in method. Because of appearing forming more and more much, the programmer can select and use the expansion warehouse that self needs. Different from other language, VB pair of upper and lower cases block of wood is sensitive; it can change a keyword voluntarily to standard upper and lower cases state.

VB make it possible that Feasible large amount of the external world has living space.