How to programmatically compare two PDF documents.

Question

We are in need of a solution related to comparing baselined and revised PDF documents, generally around 2-3 pages of content. Please note that I am looking for programatic comparison, ideally a dotnet based solution using Acrobat SDK. Any help will be highly appreciated.

Answer 1

Is there any recommendation considering there are no ways to programmatically compare two PDF's in .net. I noticed there are few solutions on Adobe site just like below but everyone seems to be stuck at the compare screen unable to simulate the Enter Key functionality.
      AcroAppClass acroApp1 = new AcroAppClass();
            acroApp1.Hide();
            AcroPDDocClass acrpDoc1 = new AcroPDDocClass();
            acrpDoc1.Open("c:\\MoreInformation.pdf");
            acrpDoc1.OpenAVDoc("BaseLine");
            AcroAppClass acroApp2 = new AcroAppClass();
            acroApp2.Hide();
            AcroPDDocClass acrpDoc2 = new AcroPDDocClass();
            acrpDoc2.Open("c:\\MoreInformation1.pdf");
            acrpDoc2.OpenAVDoc("Revised");
            AcroAVDoc avDoc = new AcroAVDoc();
            AcroAppClass acroMainApp = new AcroAppClass();
            acroMainApp.MenuItemExecute("DIGSIG:CompareDocuments");
            avDoc = (AcroAVDoc)acroMainApp.GetActiveDoc();
            Acrobat.CAcroPDDoc acrpDiffDoc = (Acrobat.CAcroPDDoc)avDoc.GetPDDoc();
            bool save = acrpDiffDoc.Save((short)PDSaveFlags.PDSaveFull, "c:\\compared.pdf");