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Visual Basic: Windows Programming

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Boolean Expressions in Visual Basic

A Boolean expression is one that can be evaluated as true or false. A Boolean expression can use relational operators such as < for less than, > for greater than, = for equal, and the logical operators AND and OR. In this lesson we will use the If and optional Else statements to decide which statements to execute.

Please study the material at each of the links below.

1. Microsoft Manual: Decision Structures
   
   

2. IF Statements
   
   
3. Top or bottom?
   
   
4. AND And OR
   
   
5. Left or Right?
   
   
6. Check Boxes and Radio Buttons
   
   
7. Boolean functions: isNumeric and isDate
   
   
8. Additional Examples
   
   

Glossary for boolean lesson