Word to PDF - Performance

Question

Hello,
We have a written a custom application in .NET that converts a set of word document to pdf. The PDF generation piece is taking about 10 to 15 secs per document, and also causing few performance issue in terms of CPU usage and not being able to open WORD or PDF in the desktop pc when the application is running.
Below is the piece of code for WORD to PDF generation logic. Please advise if there are any issues in the way the API being used, and  also recommend if there is any alternate way that could generated PDFs  with a minimum time.
        Dim AcroApp As Acrobat.AcroApp
        Dim AcroAVDoc As Acrobat.CAcroAVDoc
        Dim AcroPDoc As Acrobat.CAcroPDDoc
        Dim openDoc As Boolean
            AcroApp = CreateObject("AcroExch.App")
            AcroAVDoc = CreateObject("AcroExch.AVDoc")
            AcroPDoc = CreateObject("AcroExch.PDDoc")
            For Each docFile As String In Directory.GetFiles(ConfigurationSettings.AppSettings("mailmergeletterspath"))              
                openDoc = AcroAVDoc.Open(docFile, "")
                AcroPDoc = AcroAVDoc.GetPDDoc
                AcroPDoc.Save(1, Path.Combine(ConfigurationSettings.AppSettings("doc2pdfpath"), Path.GetFileNameWithoutExtension(docFile) & ".pdf"))
                AcroPDoc.Close()
                AcroAVDoc.Close(True)
            Next
Thanks,
Ashok

Answer 1

Hi, Thanks for that clarification. Could you please help me out or provide some guidance on what would be right way to accomplish this? Any reference to documentations would be appreciated.
Thanks,
Ashok