Want to save time? You will save a lot of time on writing and testing code as you may just take the VB.NET code from ByteScout PDF Suite for convert xfa form to xml in pdf with pdf extractor sdk below and use it in your application. IF you want to implement the functionality, just copy and paste this code for VB.NET below into your code editor with your app, compile and run your application. This basic programming language sample code for VB.NET will do the whole work for you to convert xfa form to xml in pdf with pdf extractor sdk.
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Imports Bytescout.PDFExtractor Class Program Friend Shared Sub Main(args As String()) ' Create Bytescout.PDFExtractor.XFAFormExtractor instance Dim extractor As New XFAFormExtractor() extractor.RegistrationName = "demo" extractor.RegistrationKey = "demo" ' Load PDF document ' (!) We do not provide the sample document, please load your own. extractor.LoadDocumentFromFile("samplexfa.pdf") ' Enumerate XFA form content part types For Each contentType As XFAFormContentType In [Enum].GetValues(GetType(XFAFormContentType)) 'Get count of content parts of specified type Dim partCount As Integer = extractor.GetCount(contentType) ' Save parts as XML files For i As Integer = 0 To partCount - 1 Dim fileName As String = contentType.ToString() + i.ToString() + ".xml" extractor.SaveToFile(contentType, i, fileName) Console.WriteLine("Saved form part " + fileName) Next Next ' Cleanup extractor.Dispose() Console.WriteLine() Console.WriteLine("Press any key to continue...") Console.ReadLine() End Sub End Class