Browsing Folders for Files on 64-bit Server Side Implementation (Batch Run)

I am sure all of us have had a requirement where we were supposed to process a folder for specific file pattern / all file pattern and process these files.

This scenario is very prominent during integration of different applications with AX.

I scenarios where this process is run manually or on client side, we use the standard methods provided by Microsoft in WinApi class (FindFirstFile, FindNextFile, FindClose).

These methods in turn use the FindFirstFile, FindNextFile and FindClose methods defined in Kernel32 dll.

Now these methods are not provided on Server Side implementation of WinApi namely WinApiServer. But you can copy  these methods from WinApi to WinApiServer and use them as required.

These methods work fine on any 32-bit OS on both client side and server side.

But the real issue comes when you are using these methods on 64-bit systems and that too on server side.

The reason being we need some redirection that needs to be done. I will speak about this re-direction in a separate blog post as I am still working on making this work inside Ax.

But other method that I found was to use System.IO class.

Here is a sample code with proper comments to make you understand.

server public static void getFiles()


    System.IO.DirectoryInfo directoryInfo;

    System.IO.FileInfo[]    fileList;

    System.IO.FileInfo      file;

    System.Exception        e;

    System.String           moveName, fromName;


    int i;

    int fileCount;

    str axMoveName, axFromName;


    InterOpPermission   perm;

    FileIOPermission    filePerm;

    FilePath            searchFilePath;

    FileName            moveFileName;



    //Check if the folder exists

    filePerm = new FileIOPermission(@"<Server Unc Path>\AX_InBound\", ‘r’);



    if (!WinApiServer::fileExists(@"<Server Unc Path>\AX_InBound\", true))


        throw error("Path not found");





    //Check if the archive folder exists

    filePerm = new FileIOPermission(@"<Server Unc Path>\AX_Archive\", ‘r’);



    if (!WinApiServer::fileExists(@"<Server Unc Path>\AX_Archive\", true))


        throw error("Archive Path not found");





    //Check the permission for CLR InterOp

    perm = new InterOpPermission(InteropKind::ClrInterop);





        //Traverse to the inbound folder and search file

        searchFilePath = @"<Server Unc Path>\AX_InBound\";

        directoryInfo = new System.IO.DirectoryInfo(searchFilePath);


        //Get list of only text files

        fileList = directoryInfo.GetFiles("*.txt");


        //Get the file count

        fileCount = fileList.get_Length();


        //One by one get each file

        for (i = 0; i < fileCount; i++)


            file = fileList.GetValue(i);


            //.Net method returns System.String need to marshal it to AX str data type

            fromName = file.get_FullName();

            axFromName = fromName;


            //Display the name of the fetched file



            //.Net method returns System.String need to marshal it to AX str data type

            moveName = file.get_Name();

            axMoveName = moveName;


            //Move to archive folder

            moveFileName = @"<Server Unc Path>\AX_Archive\" + axMoveName;



            info("File moved to " + moveFileName);





        e = ClrInterOp::getLastException();

        while (e)



            e = e.get_InnerException();





        error("An unknown exception has occurred");






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