How to Create and send PDF to Client Browser for .NETCore2.0

[emoryxu]

Hi Sir/Madam,

Sorry to bother u.
I would like to generate a PDF and send it to Client browser. My solution is based on .Net core 2.0. And I was trying to use SaveToHttpResponse as per existing instruction.

However, seems like this SaveToHttpResponse is not applicable for .NET core 2.0 in the package: ".nuget\packages\spire.pdf\5.3.8\lib\netstandard2.0\Spire.Pdf.dll".
The error msg is
-------------------------
"'PdfDocument' does not contain a definition for 'SaveToHttpResponse' and no accessible extension method 'SaveToHttpResponse' accepting a first argument of type 'PdfDocument' could be found (are you missing a using directive or an assembly reference?)"
-------------------------

Could you suggest how i can send the pdf to client browser for my case?

Thanks.

[Nina.Tang]

Hello,

Thanks for your inquiry.
Sorry to tell that our Spire.PDF for .NET Core doesn't support the function SaveToHttpResponse at present, we will add the new feature into our future list. If it is achieved in the future, we will inform you. For your case, you could first save to stream, then output the stream to client browser.

Code: Select all

pdf.SaveToStream(stream, FileFormat.PDF);

Sincerely,
Nina
E-iceblue support team

[sunainaDG]

Hi,

Im planning to use the FreeSpire.PDF in my .NetCore App.
It seems to have a dependency on Microsoft.Win32.SystemEvents

So im curious, that after adding this library, will my project still be a cross platform app?

[Nina.Tang]

Hello,

Thanks for your inquiry.
Please note that the Microsoft.Win32.SystemEvents is a common assemble of .NET Core application. It would not affect your cross platform app (.NET Core). Our Spire.PDF supports working with .NET Core, just go for it. If there is any question, just feel free to write back.

Sincerely,
Nina
E-iceblue support team

[Nina.Tang]

Dear Emory,

Sorry for long silence.
The principle of internal implementation of the new feature SaveToHttpResponse in our Spire.PDF is first saving to stream, then using the HTTP Response to post the stream to browser. After our development's discussion, we decided not to provide this method in NET Core anymore. Please try my previous suggestion that using our Spire.PDF to save document to stream, then using the HTTP Response to post the stream to browser. Any other question, please feel free to write back.

Sincerely,
Nina
E-iceblue support team

[mtceegee]

Hello,
For your case, you could first save to stream, then output the stream to client browser.

Code: Select all

pdf.SaveToStream(stream, FileFormat.PDF);

Sincerely,
Nina
E-iceblue support team

Would you please demonstrate exactly how to output the stream to the client browser in .NET Core? Let's assume it's a controller ActionResult being called from a button on a view. Do you have to do a byte conversion on the stream and return a response?

Thanks.

[Elena.Zhang]

Hello,

Thanks for your inquiry.
Please refer to the following code to achieve your needs. Feel free to contact us if you have further issues.

Code: Select all

        public IActionResult Download()
        {
            PdfDocument pdf = new PdfDocument();
            //....

            //save pdf to stream
            MemoryStream ms = new MemoryStream();
            pdf.SaveToStream(ms, FileFormat.PDF);         
            return File(ms.ToArray(), "application/pdf", "text.pdf");
        }


Sincerely
Elena
E-iceblue support team