Ajuda del LibreOffice 7.3
Defines one or more statement blocks that you only want to execute if a given condition or expression is True.
If condition Then
statements
[{ElseIf|Else If} expression Then
statements]
[Else
statements]
{EndIf|End If}
Instead of Else If you can write ElseIf, instead of End If you can write EndIf.
If statements can be shortened to one line when using single statement blocks.
If condition Then statement [Else statement]
The If...Then statement executes program blocks depending on given conditions. When LibreOffice Basic encounters an If statement, the condition is tested. If the condition is True, all subsequent statements up to the next Else or ElseIf statement are executed. If the condition is False, and an ElseIf statement follows, LibreOffice Basic tests the next expression and executes the following statements if the condition is True. If False, the program continues either with the next ElseIf or Else statement. Statements following Else are executed only if none of the previously tested conditions were True. After all conditions are evaluated, and the corresponding statements executed, the program continues with the statement following EndIf.
Podeu imbricar múltiples expressions If...Then.
Les expressions Else i ElseIf són opcionals.
Podeu utilitzar GoTo i GoSub per saltar fora d'un bloc If...Then, però no per saltar dins d'una estructura If...Then.
L'exemple següent vos permet introduir la data de venciment d'un producte, i determina si la data de venciment ha passat.
Sub ExampleIfThenDate
Dim sDate As String
Dim sToday As String
sDate = InputBox("Introduïu la data de venciment (MM.DD.AAAA)")
sDate = Right$(sDate, 4) + Mid$(sDate, 4, 2) + Left$(sDate, 2)
sToday = Date$
sToday = Right$(sToday, 4)+ Mid$(sToday, 4, 2) + Left$(sToday, 2)
If sDate < sToday Then
MsgBox "La data de venciment ha passat"
ElseIf sDate > sToday Then
MsgBox "La data de venciment encara no ha passat"
Else
MsgBox "La data de venciment és hui"
End If
End Sub