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by Dinesh Thakur Category: Variables and Constants

1. Visual Basic provides number of built in functions. The Val function is one of it. Val function converts the text data into a numeric value.

 
by Dinesh Thakur Category: Variables and Constants

A Variable’s Scope : The scope of a variable is the section of the application that can see and manipulate the variable. If a variable is declared within a procedure, only the code in the specific procedure has access to that variable. When the variable’s scope is limited to a procedure it’s called local.

 
by Dinesh Thakur Category: Variables and Constants

1. The order in which operator are performed determines the result. Consider the expressions 3 + 4 * 2. Over here if addition is done first, the result is 14. However, if multiplication is done first then result is 11.

 
by Dinesh Thakur Category: Variables and Constants

Variables are used to store values during a program’s execution. So, variables are place values in which you can leave values and recall them at will.

 
by Dinesh Thakur Category: Variables and Constants

1. There are several ways of declaring the variable, the most commonly used statement is Dim statement to declare the variable. The syntax for declaring the variable using Dim is as follows:

 
by Dinesh Thakur Category: Variables and Constants

In Visual Basic there are some controls properties that return you a Boolean value which can be as condition in the testing. For example, option buttons returns true when they are selected and returns you false when they are not.

 
by Dinesh Thakur Category: Variables and Constants

1. A power full asset of the computer is its ability to make decisions and to take alternate course of action based on the out come.



 
by Dinesh Thakur Category: Variables and Constants

Some variables don’t change value during the execution of program. These are constants that appear many times in your code. The constants are preferred for two reasons :

 
by Dinesh Thakur Category: Variables and Constants

When a Basic statement become too long for one line , use a line-Continuation

character.You can type a space and an underscore , press Enter, and continue the statement on the next line . It is OK to indent the continued lines.The only restriction is that the line-continuation character must appear between elements; you cannot place a continuation in the middle of a literal or split the name of an object or property.

 
by Dinesh Thakur Category: Decisions and Conditions

An application needs a built-in capability to test conditions and take a different course of action depending on the outcome of the test. Visual Basic provides three control flow, or decision, structures :

 

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to contact us.



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