it was a problem in javascript stream
Public Sub AddJS3D(ByVal PgDest As Integer, ByVal StrScript As String)
Dim pagedicFrom As PdfDictionary = New PdfDictionary
pagedicFrom = _reader.GetPageN(PgDest)
Dim oni As New PdfStream(PdfEncodings.ConvertToBytes(StrScript, ""))
oni.FlateCompress()
Dim annotarray As PdfArray = New PdfArray
annotarray = PdfReader.GetPdfObject(pagedicFrom.Get(PdfName.ANNOTS))
If Not (annotarray Is Nothing) Then
Dim ArrayLen As Integer = annotarray.ArrayList.Count - 1
For idx As Integer = 0 To ArrayLen
If idx <= ArrayLen Then
Dim annotDic As PdfDictionary
annotDic =
PdfReader.GetPdfObjectRelease(annotarray.ArrayList(idx))
Dim sSubType As String =
annotDic.Get(PdfName.SUBTYPE).ToString
If (sSubType = "/3D") Then
Dim objP As PdfObject = Nothing
Dim DictP As PdfDictionary = Nothing
Dim Name3DD As New PdfName("3DD")
Dim Name_OnInstantiate As New
PdfName("OnInstantiate")
If annotDic.Contains(Name3DD) Then
objP = annotDic.Get(Name3DD)
If Not IsNothing(objP) Then
DictP = PdfReader.GetPdfObjectRelease(objP)
End If
Dim AnnotationCorretta As PdfDictionary
AnnotationCorretta =
PdfReader.GetPdfObjectRelease(DictP)
AnnotationCorretta.Remove(Name_OnInstantiate)
AnnotationCorretta.Put(Name_OnInstantiate,
_Dest.Writer.AddToBody(oni).IndirectReference())
End If
End If
End If
Next
End If
End Sub
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