Dynamics AX : How to Merge Multiple PDF files into a single PDF file

This Bolg will help you to merge Multiple PDF into a single PDF file. Thanks to open source dll “pdfSharp”. It made my life easier to convert the C# code to X++ by using the dll.

The dll can be downloaded from the below link or you can google and get the dll from other sources

http://pdfsharp.codeplex.com/

The pdfsharp.dll file can also be downloaded from the link below:

https://drive.google.com/folderview?id=0BzqL3XWsezaCdUZFX3FHNHA0ZWM&usp=sharing

Once the dll has been downloaded, you need to add the dll in Client\Bin folder as shown below.

Then go to AOT >> References >> Add the pdfSharp.dll by using Add reference option and browse till the pdfSharp.dll in the bin folder.

Now for this purpose I created a class as below:

class MergePdf

{

}

Added a static method in this class as below:

static container findMatchingFiles(

        str _folderPath

    ,   str _filePattern   = '*.*')

{

    System.IO.DirectoryInfo     directory;

    System.IO.FileInfo[]        files;

    System.IO.FileInfo          file;

    InteropPermission           permission;

    str         fileName;

    counter     filesCount;

    counter     loop;

    container   mathchingFiles;

    ;

    permission  = new InteropPermission(InteropKind::ClrInterop);

    permission.assert();

    directory   = new System.IO.DirectoryInfo(_folderPath);

    files       = directory.GetFiles(_filePattern);

    filesCount  = files.get_Length();

    for (loop = 0; loop < filesCount; loop++)

    {

        file            = files.GetValue(loop);

        fileName        = file.get_FullName();

        mathchingFiles  = conins(mathchingFiles, conlen(mathchingFiles) + 1, fileName);

    }

CodeAccessPermission::revertAssert();

 return mathchingFiles;

}

Then i created a X++ Job to achieve the desired target to merge multiple PDF files into a single file:

static void MergePDFFiles(Args _args)
{
    PdfSharp.Pdf.PdfDocument outPutPDFDocument = new PdfSharp.Pdf.PdfDocument();
    PdfSharp.Pdf.PdfDocument inputPDFDocument = new PdfSharp.Pdf.PdfDocument();
    PdfSharp.Pdf.PdfPages pdfPages;
    container con = MergePdf::findMatchingFiles(@'C:\TEMP', '*.pdf');
    int i, j, pageCount;
    FileName pdfFile;
    InteropPermission permission;
    str errorMessage;
    ;

    try
    {
        permission = new InteropPermission(InteropKind::ClrInterop);
        permission.assert();
        for (i = 1; i <= conLen(con); i++)
        {
            pdfFile = conPeek(con,i);
            inputPDFDocument = PdfSharp.Pdf.IO.PdfReader::Open(pdfFile, PdfSharp.Pdf.IO.PdfDocumentOpenMode::Import);
            outputPDFDocument.set_Version(inputPDFDocument.get_Version());
            pageCount = inputPDFDocument.get_PageCount();
            pdfPages = inputPDFDocument.get_Pages();
     
            if (pageCount > 0)
            {
                for (j = 0 ; j < pageCount; j++)
                {
                    outputPDFDocument.AddPage(pdfPages.get_Item(j));
                }
            }
        }
        outputPDFDocument.Save("c:\\TEMP\\mergedFile.pdf");
        CodeAccessPermission::revertAssert();
    }
    catch(Exception::CLRError)
    {
        // Get the CLR error before any other CLR operation
        errorMessage = AifUtil::getClrErrorMessage();
        CodeAccessPermission::revertAssert();
        throw error(errorMessage);
    }
 
}