Debenu Quick PDF Library - PDF SDK Community Forum : System.Runtime.InteropServices.SEHException http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 05 Apr 2026 15:42:37 +0000 Mon, 30 Apr 2018 20:24:40 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=3556 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[System.Runtime.InteropServices.SEHException : Hi,if TFrost is right regarding...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14185.html#14185 Author: Ingo
Subject: 3556
Posted: 30 Apr 18 at 8:24PM

Hi,

if TFrost is right regarding the memory consumption it could be good to calculate the sizes of your pdf-documents...
make a break from time to time with a Free...
keep the actual page number in mind...
and start new with the last page number?

]]> Mon, 30 Apr 2018 20:24:40 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14185.html#14185 <![CDATA[System.Runtime.InteropServices.SEHException : You have not said anything about...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14183.html#14183 Author: tfrost
Subject: 3556
Posted: 30 Apr 18 at 11:30AM

You have not said anything about the size of your PDFs or the size of the images, or how uniform their sizes are. The images may need to pass through an intermediate (uncompressed) BMP on the way to their save format, and multiple copies may also be in memory. The fact that freeing the image list improves matters implies that the lack of memory is genuine. 500MB of free memory is by no means a huge amount, and your problem may be caused by memory fragmentation even when the total shown by Task Manager appears to be large enough (Process Explorer might show more detail).  I would recommend increasing your virtual memory space to a few GB to see of this solves the problem.  I do not use .Net so I have no idea how to deal with memory fragmentation in this environment, but it is a common problem when dealing with large bitmaps in a limited memory pool.]]> Mon, 30 Apr 2018 11:30:00 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14183.html#14183 <![CDATA[System.Runtime.InteropServices.SEHException : I tried the DA-functions, still...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14182.html#14182 Author: imsudheer
Subject: 3556
Posted: 30 Apr 18 at 6:28AM

I tried the DA-functions, still the same issue. 

My question is, even though I have released the image and imagelist after the use and removing the document from the Library, why I am getting the "Out of memory" exception.

Release resources is not working? Am I missing anything?
]]> Mon, 30 Apr 2018 06:28:49 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14182.html#14182 <![CDATA[System.Runtime.InteropServices.SEHException : Thanks for the reply.My code is...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14181.html#14181 Author: imsudheer
Subject: 3556
Posted: 30 Apr 18 at 4:10AM

Thanks for the reply.

My code is referred from the same kb-sample you mentioned.

I have added the code to remove the each image file from memory after saving as

 pdfLibrary.SaveImageListItemDataToFile(il, k, 0, Path.Combine(path, filename));
 pdfLibrary.ReleaseImage(imageIndex);


I see there is some improvement in the process, as I am able to extract around 45 files without "Outofmemory" exception, earlier I used to get the same exception only for 10 files. So it got better after the above change. 

I haven't tried the DA-functions yet, will try and post the result.
]]> Mon, 30 Apr 2018 04:10:07 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14181.html#14181 <![CDATA[System.Runtime.InteropServices.SEHException : Perhaps this kb-sample can hel...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14180.html#14180 Author: Ingo
Subject: 3556
Posted: 29 Apr 18 at 8:52PM

Perhaps this kb-sample can help?
http://www.debenu.com/kb/extract-images-from-pdf-files-as-the-appropriate-image-type/
What about trying the DA-functions for your needs using less memory?
http://www.debenu.com/docs/pdf_library_reference/ImageHandling.php


]]> Sun, 29 Apr 2018 20:52:51 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14180.html#14180 <![CDATA[System.Runtime.InteropServices.SEHException : Yes, what you mentioned about...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14179.html#14179 Author: imsudheer
Subject: 3556
Posted: 29 Apr 18 at 5:17PM

Yes, what you mentioned about the page count part. I will take care of that.

And I have tried the "ReleaseImageList" option, but im still getting the Out of memory exception.
]]> Sun, 29 Apr 2018 17:17:37 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14179.html#14179 <![CDATA[System.Runtime.InteropServices.SEHException : I think you need to add ReleaseImageList....]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14178.html#14178 Author: tfrost
Subject: 3556
Posted: 28 Apr 18 at 5:03PM

I think you need to add ReleaseImageList.  Also your main loop is described in the comments as iterating through the pages, but in this case you should first find the page count, not the image count.  Unless you already know that there is guaranteed to be one and only one image per page.]]> Sat, 28 Apr 2018 17:03:36 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14178.html#14178 <![CDATA[System.Runtime.InteropServices.SEHException : I just tried the same code with...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14177.html#14177 Author: imsudheer
Subject: 3556
Posted: 28 Apr 18 at 3:47PM

I just tried the same code with ActiveX DLL, here it is throwing "Out of memory" exception as below

   at FileProcessor.ImageExtractor.ExtractImages(String fileName, String outPath) in C:\FileProcessor\ImageExtractor.cs:line 51
1506700 [1] ERROR FileProcessor.ImageExtractor (null) - Error Message: Out of memory
System.Runtime.InteropServices.COMException (0x8000FFFF): Out of memory
   at DebenuPDFLibraryAX1511.IPDFLibrary.FindImages()

But I am removing the document after the use in loop...Im not sure what is missing here

And what is the advantages of Active X DLL compared to "DLL" Version?
]]> Sat, 28 Apr 2018 15:47:47 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14177.html#14177 <![CDATA[System.Runtime.InteropServices.SEHException : Hi Ingo,Thanks for the reply.Files...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14176.html#14176 Author: imsudheer
Subject: 3556
Posted: 28 Apr 18 at 4:43AM

Hi Ingo,

Thanks for the reply.

Files are not encrypted. See my code below.


 foreach (var filename in Directory.GetFiles(searchPath, "*.pdf", SearchOption.TopDirectoryOnly))
            {
                Console.WriteLine("Extracting images from {0}", System.IO.Path.GetFileName(filename));
                ImageExtractor.ExtractImages(filename, outputPath);
                Console.WriteLine("Extracting images from {0} is completed.", System.IO.Path.GetFileName(filename));
            } 


 public static void ExtractImages(string fileName, string outPath)
        {
            log4net.Config.BasicConfigurator.Configure();
            log4net.ILog log = log4net.LogManager.GetLogger(typeof(ImageExtractor));

            // Check to see if the library has been successfully unlocked
            if (pdfLibrary.Unlocked() == 1)
            {
                try
                {
                    int DocumentID = pdfLibrary.LoadFromFile(fileName, "");
                    pdfLibrary.SelectDocument(DocumentID);
                    int images = pdfLibrary.FindImages();

                    string numberOfImages = Convert.ToString(images);
                    string filename = "";

                    // Iterate through each page
                    for (int i = 1; i <= images; i++)
                    {
                        // Select current page
                        pdfLibrary.SelectPage(i);

                        // Get list of images on the page
                        int il = pdfLibrary.GetPageImageList(0);

                        // Count number of images in the list
                        int ic = pdfLibrary.GetImageListCount(il);
                        for (int k = 1; k <= ic; k++)
                        {
                            // Iterate through each image and get the
                            // image type and image ID
                            int it = pdfLibrary.GetImageListItemIntProperty(il, k, 400);
                            int gid = pdfLibrary.GetImageListItemIntProperty(il, k, 405);

                            // Choose the approrpriate file extenion based on
                            // the returned image type
                            switch (it)
                            {
                                case 1:
                                    filename = "image-" + Convert.ToString(gid) + "-" + k + ".jpg";
                                    break;
                                case 2:
                                    filename = "image-" + Convert.ToString(gid) + "-" + k + ".bmp";
                                    break;
                                case 3:
                                    filename = "image-" + Convert.ToString(gid) + "-" + k + ".tif";
                                    break;
                                case 4:
                                    filename = "image-" + Convert.ToString(gid) + "-" + k + ".png";
                                    break;
                                default:
                                    Console.WriteLine("Unknown image type" + it);
                                    break;
                            }

                            // Creating an image directory
                            string path = outPath + @"\" + Path.GetFileNameWithoutExtension(fileName);
                            if (Directory.Exists(path) == false)
                                Directory.CreateDirectory(path);

                            // Save the selected image to disk
                            pdfLibrary.SaveImageListItemDataToFile(il, k, 0, Path.Combine(path, filename));
                            Console.WriteLine("Images of the file " + fileName + " saved successfully");
                        }
                    }
                    // Remove the document from memory
                    pdfLibrary.RemoveDocument(DocumentID);

                    File.Delete(fileName);
                }
                catch (Exception ex)
                {
                    log.Error("Error Message: " + ex.Message.ToString(), ex);
                    Console.WriteLine("Error occured in file " + fileName);
                    Console.WriteLine(ex);
                }
            }


Thanks in Advance

]]> Sat, 28 Apr 2018 04:43:12 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14176.html#14176 <![CDATA[System.Runtime.InteropServices.SEHException : Hi Imsudheer,you should better...]]> http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14175.html#14175 Author: Ingo
Subject: 3556
Posted: 27 Apr 18 at 6:00PM

Hi Imsudheer,

you should better post a longer code snippet.
Perhaps the error raises while using the mentioned function but the reason of the error is another one?
I think you're reading the pdf-content of a directory in a list and then you're working in a loop. Loading each file and do the extractions.
Perhaps some files are encrypted? You should do a decryption before working on a pdf.
Did you do a free after each pdf?
There could be many reasons for such a common error...
So better posting a code snippet ;-)

Cheers and welcome here,
Ingo


]]> Fri, 27 Apr 2018 18:00:01 +0000 http://www.quickpdf.org/forum/systemruntimeinteropservicessehexception_topic3556_post14175.html#14175