PDF generation reaches up to 100% and prints after 4~5 minutes about dinktopdf

[erwindamsma]

I had a similar problem a while ago.

You're not using the the converter you added as singleton in Startup.cs. You're creating a new SynchronizedConverter and PdfTools every time your class instantiates. I think this causes issues because you're ending up creating multiple instances of PdfTools without disposing them. (PdfTools implements IDisposable).

I would change your constructor to retrieve the converter from the services by dependency injection instead.

Perhaps something like this:

public MyClassName(IConverter converter)
{
  _converter = converter;
}

[matheusavi]

We changed to a java API with jasper.

[gabrielcapanogyp]

Well, it seems to be problem with the DinkToPdf...

I guess that is something about making a singleton instance receive a IDisposable class (PdfTools)

I just made this code and worked like a charm:

      using(var tools  = new PdfTools())
            {
                var _pdfConverter = new SynchronizedConverter(tools);


                if(!_pdfConverter.Tools.IsLoaded){
                    _pdfConverter.Error += (object sender, ErrorArgs e) => logger.LogError(e.Message);
                    _pdfConverter.Finished += (object sender, FinishedArgs e) => logger.LogInformation(e.Success.ToString());
                    _pdfConverter.Warning += (object sender, WarningArgs e) => logger.LogWarning(e.Message);
                    _pdfConverter.ProgressChanged += (object sender, ProgressChangedArgs e) => logger.LogInformation(e.Description);
                    _pdfConverter.PhaseChanged += (object sender, PhaseChangedArgs e) => logger.LogInformation(e.Description);
                
                }
                
                var doc = new HtmlToPdfDocument()
                {
                    Objects =
                    {

                        new ObjectSettings
                        {
                            HtmlContent = html,

                        }
                    }
                };
                byte[] pdfBytes = _pdfConverter.Convert(doc); 
            }

[matheusavi]

I did what you said.
It worked for 30 minutes.
Then I had the same effect, including with the test project (DinkToPdf.TestWebServer).

[matheusavi]

Interestingly, it works on IIS.
The client has been using it for some time and I have done several tests on my machine.

[lkolodziey]

As erwindamsma said, I put as Singleton and works fine.

[matheusavi]

It seems to be a problem with https://github.com/wkhtmltopdf/wkhtmltopdf , because it ocours in other librarys that use wkhtmltopdf.

[psychos4]

My Problem is, the first time it works perfectly. If I start the second document to convert, it will never end. Any Solutions?

dotnet core version: 2.1.3

[lkolodziey]

@psychos4
For example I created a web application using dotnet core 2.1, take a look because when generate pdf I can push button many times and many PDFs are created.
https://github.com/lkolodziey/UsingDinkToPdf_Example

Hi, @lkolodziey
Have you solved your problem? I am facing the same problem with Dotnet Core SDK 3.0.100-preview5-011568.