On...GoSub Statement; On...GoTo Statement

Es bifurca cap a una de les diverses línies especificades al codi del programa, segons el valor d'una expressió numèrica.

Sintaxi:

A GoSub/GoTo sintaxi


On expression GoSub Label1[, Label2[, Label3[,...]]]
On expression GoTo Label1[, Label2[, Label3[,...]]]

Paràmetres:

expression: Any numeric expression between 0 and 255 that determines which of the lines the program branches to. If expression is 0, the statement is not executed. If expression is greater than 0, the program jumps to the label that has a position number that corresponds to the expression (1 = First label; 2 = Second label)

label: Target line according to GoTo or GoSub structure.

Les convencions GoTo o GoSub són vàlides.

Exemple:


Sub ExampleOnGosub
Dim iVar As Integer
Dim sVar As String
    iVar = 2
    sVar =""
    On iVar GoSub Sub1, Sub2
    On iVar GoTo Line1, Line2
    Exit Sub
Sub1:
    sVar =sVar & " De Sub 1 a" : Return
Sub2:
    sVar =sVar & " De Sub 2 a" : Return
Line1:
    sVar =sVar & " Etiqueta 1" : GoTo Ende
Line2:
    sVar =sVar & " Etiqueta 2"
Ende:
    MsgBox sVar,0,"On...GoSub"
End Sub

GoSubReturn Expressió

GoTo Expressió