If...Then...Else sakinys

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# If...Then...Else Statement

Defines one or more statement blocks that you only want to execute if a given condition is True.

## Syntax:

    If condition=true Then Statement block [ElseIf condition=true Then] Statement block [Else] Statement block EndIf

Instead of Else If you can write ElseIf, instead of End If you can write EndIf.

## Parameters:

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 condition 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.

Sakinius If...Then galite įdėti vieną į kitą daug kartų.

Else ir ElseIf sakinių dalys yra neprivalomos, pasirinktinės.

Galite naudoti GoTo ir GoSub norėdami peršokti If...Then bloką, tačiau negalima šokti į struktūros If...Then vidų.

Šis pavyzdys leidžia įvesti produkto galiojimo datą ir nustatyti, ar galiojimo laikas praėjo.

## Example:

    Sub ExampleIfThenDate
    Dim sDate As String
    Dim sToday As String
        sDate = InputBox("Įveskite galiojimo datą (YYYY-MM-DD)")
        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 "Galiojimo laikas praėjo"
        ElseIf sDate > sToday Then
            MsgBox "Galiojimo laikas dar nepraėjo"
        Else
            MsgBox "Galiojimas baigsis šiandien"
        End If
    End Sub