How to batch scan pdf-files to specified folders by sdk

[800903]

how to set one file per page ScanningContext scanningContext = new ScanningContext(new GdiImageContext()); var scanController = new ScanController(scanningContext); var devices = await scanController.GetDeviceList(Driver.Wia);
var options = new ScanOptions { Device = devices.First(), PageSize = PageSize.A4, PaperSource = NAPS2.Scan.PaperSource.Flatbed, Dpi = 600 }; var images =await scanController.Scan(options).ToListAsync(); var pdfExporter = new PdfExporter(scanningContext); await pdfExporter.Export("doc.pdf", images); ????? ??????? specified dynamic folders

[800903]

I don't know if it will be effective.

public async Task ScanWithTwain(string filepath) {

        ScanningContext scanningContext = new ScanningContext(new GdiImageContext());
        var scanController = new ScanController(scanningContext);
        var devices = await scanController.GetDeviceList(Driver.Wia);
        var options = new ScanOptions
        {
            Device = devices.First(),
            PageSize = PageSize.A4,
            PaperSource = NAPS2.Scan.PaperSource.Flatbed,
            Dpi = 600
        };           
        var images =await scanController.Scan(options).ToListAsync();
        var pdfExporter = new PdfExporter(scanningContext);
        string currentFileName = "";
        int pages= 0;
        var compat = PdfCompat.Default;
        PdfSettings pdfSettings = new PdfSettings();
        pdfSettings.Compat = compat;
        pdfSettings.SinglePagePdfs = true;
        pdfSettings.DefaultFileName = "0000.pdf";
        var imagesByFile = pdfSettings.SinglePagePdfs ? images.Select(x => new[] { x }).ToArray(): new[] { images.ToArray() };
        foreach (var imagesForFile in imagesByFile)
        {
            {
                pages++;
                currentFileName = filepath + pages.ToString("D4") + ".pdf";
                await pdfExporter.Export(currentFileName, imagesForFile, new PdfExportParams(pdfSettings.Metadata, pdfSettings.Encryption, pdfSettings.Compat));
            }
        }

    }

[cyanfish]

First, I'd recommend updating to the latest SDK version, where PdfSettings isn't available because it doesn't do anything.

But as far as code, you don't need any special NAPS2 functionality, just a for loop:

int i = 1;
foreach (var image in images) {
    await pdfExporter.Export($"{i++:D4}.pdf", new[] { image });
}

[cyanfish]

Well, you'll need to put in a full file path depending on where you want to save it.

[800903]

Here's the full code. public async Task ScanWithWia() { ScanningContext scanningContext = new ScanningContext(new GdiImageContext()); var scanController = new ScanController(scanningContext); var devices = await scanController.GetDeviceList(Driver.Wia); var options = new ScanOptions { Device = devices.First(), PageSize = PageSize.A4, PaperSource = NAPS2.Scan.PaperSource.Flatbed, Dpi = 600 }; var images = await scanController.Scan(options).ToListAsync(); var pdfExporter = new PdfExporter(scanningContext); int pages = 0; foreach (var image in images) { pages++; await pdfExporter.Export(@"D:\" + pages.ToString("D4") + ".pdf", new[] { image }); } }

[800903]

ScanningContext scanningContext = new ScanningContext(new GdiImageContext()); // got it done must be add FileStorageManager object, Otherwise, the pdf file cannot be saved FileStorageManager fileStorageManager = new FileStorageManager(@"c:\temp");
scanningContext.FileStorageManager = fileStorageManager; //=======================================================