Cfrgtkky

In the end, my goal is to send a raw image data from the front-end, then split that image into however many pages, and lastly send that pdf back to the front-end for download.

But every time I use the theDoc.addImageFile(), it tells me that the "Image is not in a suitable format". I'm using this as reference: https://www.websupergoo.com/helppdfnet/source/5-abcpdf/doc/1-methods/addimagefile.htm

To troubleshoot, I thought that the image might not be rendering correctly, so I added a File.WriteAllBytes to view the rendered image and it was exactly what I wanted, but still not adding to the PDF. I also tried sending the actual path of a previously rendered image thinking that the new image might not have been fully created yet, but it also gave me the same error. Lastly, I thought PNGs might be problematic and changed to JPG but it did not work.

Here is the code:

[HttpPost]

public IActionResult PrintToPDF(string imageString)

{

    // Converts dataUri to bytes

    var base64Data = Regex.Match(imageString, @"data:image/(?<type>.+?),(?<data>.+)").Groups["data"].Value;

    var binData = Convert.FromBase64String(base64Data);



    /* Ultimately will be removed, but used for debugging image */

    string path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

    string imgName= "Test.jpg";

    string filename = Path.Combine(path, imgName);



    System.IO.File.WriteAllBytes(filename, binData);

    /***********************************************************/



    using (Doc theDoc = new Doc())

    {

        // Using explicit path

        theDoc.AddImageFile(@"C:UsersUserDocumentsTest.jpg", 1);

        // Using variable

        //theDoc.AddImageFile(filename, 1);

        // What I really want

        //theDoc.AddImageFile(binData , 1);



        theDoc.Page = theDoc.AddPage();

        theDoc.AddText("Thanks");

        Response.Headers.Clear();

        Response.Headers.Add("content-disposition", "attachment; filename=test.pdf");

        return new FileStreamResult(theDoc.GetStream(), "application/pdf");

    }

}

Try something like this (not tested, but cleaned up from my own code):

    public int AddImageFile(Doc doc, byte data, int insertBeforePageID)

    {

        int pageid;



        using (var img = new XImage())

        {

            img.SetData(data);



            doc.Page = doc.AddPage(insertBeforePageID);

            pageid = doc.Page;

            doc.AddImage(img);

            img.Clear();

        }

        return pageid;

    }