VBScript in a Nutshell, 2nd Edition

Name

If . . . Then . . . Else Statement

Syntax

If condition Then
    [statements]
[ElseIf condition-n Then
    [elseifstatements] ...
[Else
    [elsestatements]]
End If

Or, you can use the single-line syntax:

If condition Then [statements] [Else elsestatements]

condition

Use: Required

Data Type: Boolean

An expression returning either True or False or an object type.

statements

Use: Optional

Program code to be executed if condition is True.

condition-n

Use: Optional

Same as condition.

elseifstatements

Use: Optional

Program code to be executed if the corresponding condition-n is True.

elsestatements

Use: Optional

Program code to be executed if the corresponding condition or condition-n is False.

Description

Executes a statement or block of statements based on the Boolean (True or False) value of an expression.

Rules at a Glance

• If condition is True, the statements following the If statement are executed.

• If condition is False and no Else or ElseIf statement is present, execution continues with the corresponding End If statement. If condition is False and ElseIf statements are present, the condition of the next ElseIf is tested. If condition is False, and an Else is present, the statements following the Else are executed.

• In the block form, each If statement must have a corresponding End If statement. ElseIf statements don’t have their own End If. For example:

  If condition Then
     statements
  ElseIf condition Then
     statements
  End If

• ElseIf and Else are optional, and any number of ElseIf and Else statements can appear in the block ...