online tutorials, website development, web application development

Visual Basic Tutorials

Visual Basic is a Front-end tool

VB Features:

• Used for Application development
• Efficient GUI (Graphical User Interface) facilities for screen designing
• Efficient Language for programming
• Offer the Integrated Development Environment(IDE)
• Support advanced facilities like OLE (Object Linking and Embedding), ODBC (Open Database Connectivity), API(Application Programming Interface), etc.,
• Programming is Object oriented
• VB has both Compiler and Interpreter
• VB is based on Event-Driven Model(EDM)

Object

• Each object has its own data and methods
• Data are defined as properties
• The methods are initiated by the events

Programming concepts:

Variable : A name given to the memory location in which the user can store the values. Value of the variable may change in the program.

Constant : A name given to the memory location in which the user can store the values. Value of constant cannot be changed in the program.

Program : Set of instructions.

Keyword or Reserved word : Words which have pre-defined meaning. The meaning cannot be changed by the user.

Identifier : Words which are defined by the programmer.
Ex: Variable name, Constant name, etc.


Data types:

To store whole numbers

• Integer
• Long Integer

To store date

• Date

To store real numbers

• Single
• Double

To store monetary value

• Currency

To store True or False

• Boolean

To store character(s)

• String

To store any data type

• Variant

To display a message in a box
Msgbox "message"


To get input from user
Var=InputBox("Message")