VBScript Reference Manual for InduSoft Web Studio

InduSoft Web Studio VBScript Reference Manual
Select Case
Description Executes one of several groups of statements, depending on the value of an expression
Usage Select Case testexpression
[Case expressionlist-n
[statements-n]] . . .
[Case Else
[elsestatements-n]]
End Select
Arguments testexpression
Any numeric or string expression.
expressionlist-n
Required if Case appears. A comma delimited list of one or more expressions.
statements-n
One or more statements executed if testexpression matches any part of expressionlist-.
elsestatements-n
One or more statements executed if testexpression doesn't match any of the Case clauses.
Remarks If testexpression matches any Case expressionlist expression, the statements following that
Case clause are executed up to the next Case clause, or for the last clause, up to End Select.
Control then passes to the statement following End Select. If testexpression matches an
expressionlist expression in more than one Case clause, only the statements following the first
match are executed.
The Case Else clause is used to indicate the elsestatements to be executed if no match is found
between the testexpression and an expressionlist in any of the other Case selections. Although
not required, it is a good idea to have a Case Else statement in your Select Case block to handle
unforeseen testexpression values. If no Case expressionlist matches testexpression and there is
no Case Else statement, execution continues at the statement following End Select.
Select Case statements can be nested. Each nested Select Case statement must have a
matching End Select statement.
Example Dim Color, MyVar
Sub ChangeBackground (Color)
MyVar = lcase (Color)
Select Case MyVar
Case "red" document.bgColor = "red"
Case "green" document.bgColor = "green"
Case "blue" document.bgColor = "blue"
Case Else MsgBox "pick another color"
End Select
End Sub
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