If...Then...Else Statement

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 Collabora Office 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, Collabora Office 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.

여러 If...Then 문을 중첩할 수 있습니다.

Else 및 ElseIf 문은 선택 사항입니다.

GoTo 및 GoSub를 사용하여 If...Then 블록 밖으로 나갈 수는 있지만 If...Then 구조 안으로 들어올 수는 없습니다.

다음은 제품의 만료일을 입력한 다음 만료일이 경과했는지 확인하는 예입니다.

Sub ExampleIfThenDate
    Dim sDate As String
    Dim sToday As String
    sDate = InputBox("Enter the expiration date (MM.DD.YYYY)")
    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 "The expiration date has passed"
    ElseIf sDate > sToday Then
        MsgBox "The expiration date has not yet passed"
    Else
        MsgBox "The expiration date is today"
    End If
End Sub