Constants and Enumerations in Visual Basic
Updated: May 2011
Constants are a way to use meaningful names in place of a value that does not change. Constants store values that, as the name implies, remain constant throughout the execution of an application. You can use constants to provide meaningful names, instead of numbers, making your code more readable.
Enumerations provide a convenient way to work with sets of related constants, and to associate constant values with names. For example, you can declare an enumeration for a set of integer constants associated with the days of the week, and then use the names of the days rather than their integer values in your code.
Provides syntax and usage rules for the Const statement, which is used to declare constants.
Provides syntax and usage rules for the Enum statement, which is used to create enumerations.
Provides syntax and usage rules for the Option Explicit statement, which is used at module level to force explicit declaration of all variables in that module.
Describes the Option Infer statement, which enables the use of local type inference in declaring variables.
Describes the Option Strict statement, which restricts implicit data type conversions to only widening conversions, disallows late binding, and disallows implicit typing that results in an Object type.