What does value mean in vb

Value in vb refers to the Value attribute, indicating the value assigned to the Field, Parameter or Property object; setting and returning the Variant value, used to indicate the value of the object; the default value depends on the Type attribute.

#The operating environment of this article: windows10 system, visual basic 6.0, thinkpad t480 computer.

What does value mean in vb?

Visual Basic (VB for short) is a general object-based programming language developed by Microsoft. It is structured, modular, object-oriented, and includes events to assist in the development environment. A visual programming language driven by mechanisms.

TheValue property indicates the value assigned to the Field, Parameter or Property object. Sets and returns a Variant value indicating the value of an object. The default value depends on the Type attribute. Description Use the Value property to set or return the data in the Field object, and use it with the Parameter object to set or return.

Attributes refer to some indicators used to describe the name, position, color, font and other characteristics of the object. You can change the characteristics of an object through properties.

Some properties can be set through the properties window at design time without writing any code; while some properties must be set while running the program by writing code. Properties whose values ​​can be read and set at runtime become read-write properties, and properties that can only be read become read-only properties.

Language features

Producing application installation disks, etc. provides users with a friendly integrated development environment, which is specifically reflected in:

Visual design platform : When programming using traditional programming languages, it is generally necessary to design the interface of the application (such as the appearance and position of the interface, etc.) by writing programs, and the actual effect of the interface is not visible during the design process. In Visual Basic 6.0, object-oriented programming is used to encapsulate programs and data as an object, and each object is visible. When designing the interface, developers can directly use the toolbox of Visual Basic 6.0 to "draw" different types of objects such as windows, menus, and command keys on the screen, and set properties for each object. All developers have to do is write code for the object to complete the event process, so the efficiency of programming can be greatly improved.

Event-driven programming mechanism: A process-oriented program is composed of a main program and several subprograms and functions. When a program is run, it always starts with the main program, and the main program calls subroutines and functions. Developers must determine the execution order of the entire program in advance when programming. The event-driven programming of Visual Basic 6.0 codes the relevant events triggered by the user on an object. Each event can drive the running of a program. Developers only need to write code that responds to user actions. Such application code is streamlined and easier to write and maintain.

Structured programming language: Visual Basic 6.0 has rich data types and numerous internal functions. It adopts modular and structured programming language, with clear structure, simple syntax and easy to learn.

Powerful database functions: Visual Basic 6.0 can use data controls to access various database systems such as Access and FoxPro, as well as various spreadsheets such as Excel and Lotus.

ActiveX technology: ActiveX develops the original OLE technology, allowing developers to get rid of the constraints of specific languages ​​and easily use the functions provided by other applications, enabling Visual Basic 6.0 to develop sounds, images, animations , word processing, spreadsheet, Web and other objects in one application.

Network function: The DHTML (dynamic HTML) design tool provided by Visual Basic 6.0 allows developers to dynamically create and edit Web pages, allowing users to develop multi-functional network application software.

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