Re: Loop on all items in a collection

forums_noreply@adobe.com — Tue, 15 Oct 2013 20:28:49 GMT

You are correct that VB uses 1 based indexing whereas Javascript uses 0 based indexing.

I find it easier to use a for each loop (in Javascript):

var myMasterSpread;

fore each ( myMasterSpread in myDoc.masterSpreads )

{

// ... code goes here using the myMasterSpread var

}

Re: Loop on all items in a collection

forums_noreply@adobe.com — Fri, 04 Oct 2013 21:36:04 GMT

Through a lot of trial and error, I discovered the answer to my own question: Collections are base 1, not base 0. My statement

For I = 0 To .MasterSpreads.Count - 1

should be

For I = 1 To .MasterSpreads.Count

Loop on all items in a collection

forums_noreply@adobe.com — Fri, 04 Oct 2013 18:27:08 GMT

I need to loop on all items in a collection in a VB.NET program that is using the InDesign API. For example, I want to loop on all master spreads in a document. Here is my sample code:

Dim I As Integer = 0

Dim MyApp As InDesign.Application = Nothing

Dim MyDoc As InDesign.Document = Nothing

Dim MyPage As InDesign.Page = Nothing

MyApp = CType(Activator.CreateInstance(Type.GetTypeFromProgID("InDesign.Application"), True), InDesign.Application)

MyDoc = CType(MyApp.Documents.Add(False), InDesign.Document)

With MyDoc

With .DocumentPreferences

.PageHeight = "8.5i"

.PageWidth = "5.5i"

End With

With .ViewPreferences

.HorizontalMeasurementUnits = InDesign.idMeasurementUnits.idPoints

.VerticalMeasurementUnits = InDesign.idMeasurementUnits.idPoints

End With

If .MasterSpreads.Count > 0 Then

For I = 0 To .MasterSpreads.Count - 1

Dim ThisMasterSpread As InDesign.MasterSpread = CType(.MasterSpreads.Item(I), InDesign.MasterSpread)

Next I

End If

End With

When it executes, I get an error on the last Dim statement that defines ThisMasterSpread. It highlights .MasterSpreads.Item(I) and gives the following error:

COMException was unhandled: The requested member of the collection does not exist.

How do I successfully loop on all master spreads?

Thanks!

Adobe Community: Message List - Loop on all items in a collection

Re: Loop on all items in a collection

Re: Loop on all items in a collection

Loop on all items in a collection