How to build portfolio pdf from memory stream

[schlarmage]

You have an example in your docs for building a portfolio PDF from various file types using files in the file system via the docPortfolio.Collection.AddFile(fileName) method which takes only a file system filename (string) as a parameter(?). How can I do the same thing, but add the file to the portfolio PDF from a memory stream? e.g.:

Code: Select all

            string returnValue = "false";
            var tenantId = AbpSession.TenantId;
            MemoryStream memoryStream = new MemoryStream();
            BinaryObject fileStreamLocal = new BinaryObject();
            byte[] fileBytes;

            try
            {
                String[] fileBLOBIDs = fileObjectIDs.Split("|");
                //create a PdfDocument instance and build portfolio PDF
                using (PdfDocument docPortfolio = new PdfDocument())
                {
                    //create a PDF Portfolio and add files to it
                    for (int iFile = 0; iFile < fileBLOBIDs.Length; iFile++)
                    {
                        //open BLOB file object from DB
                        fileStreamLocal = AsyncHelper.RunSync(() => _binaryObjectManager.GetOrNullAsync(Guid.Parse(fileBLOBIDs[iFile])));
                        memoryStream = new MemoryStream(fileStreamLocal.Bytes);
                        //add file to portfolio
                        docPortfolio.Collection.AddFile(fileBLOBIDs[iFile]); //AddFile method accepts ONLY string parm ?- DOESN'T SUPPORT MEMORY STREAM?
                    }
                    //save the result file
                    //serialize portfolio PDF to memory stream
                    var workMemoryStream = new MemoryStream();
                    docPortfolio.SaveToStream(workMemoryStream, FileFormat.PDF);
                    //create compatible binary object from memory stream
                    using (var stream = workMemoryStream)
                    {
                        fileBytes = stream.ToArray(); //convert memory stream to byte array
                    }
                    var fileObject = new BinaryObject(tenantId, fileBytes);
                    //save as BLOB in DB
                    await _binaryObjectManager.SaveAsync(fileObject);
                    docPortfolio.Dispose();
                }
                //
                returnValue = "true";
                //
                return returnValue;
            }
...


[Marcia.Zhou]

Hello,

Thanks for your inquiry!

I am sorry that our Sprie.PDF does not support building portfolio PDF from memory stream now. We have added it as a new feature with the ticket SPIREPDF-4062 in our upgrade list. If there is any progress, we will keep you informed. Sorry for the inconvenience caused.

Sincerely,
Marcia
E-iceblue support team

[Marcia.Zhou]

Hello,

Thanks for your patience!

Glad to inform you that our Dev team had added the new feature of building portfolio PDF from stream. Here we made a temporary version (spire.pdf_7.2.13.zip) for you, please download it and refer to the following code to do a test with it.

Code: Select all

            string inputfile1 = @"E:\testdoc\sample.pdf";
            string inputfile2 = @"E:\testdoc\sample1.pdf";
            string inputfile3 = @"E:\testdoc\sample2.pdf";

            MemoryStream ms1 = new MemoryStream(File.ReadAllBytes(inputfile1));
            MemoryStream ms2 = new MemoryStream(File.ReadAllBytes(inputfile2));
            MemoryStream ms3 = new MemoryStream(File.ReadAllBytes(inputfile3));

            PdfDocument pdf = new PdfDocument();
            pdf.Collection.AddFile("file1.pdf", ms1);
            pdf.Collection.AddFile("file2.pdf", ms2);
            pdf.Collection.AddFile("file3.pdf", ms3);

            pdf.SaveToFile("newMethodAddFromStream.pdf", FileFormat.PDF);



Sincerely,
Marcia
E-iceblue support team

[Marcia.Zhou]

Hello,

Thanks for your patience.

Glad to inform you that we just released Spire.PDF Pack(Hot Fix) Version:7.3.1 which add the new feature that supports adding PDF Portfolio from stream.

Please download the fix version from the following links to test.
Website link: https://www.e-iceblue.com/Download/download-pdf-for-net-now.html
Nuget link: https://www.nuget.org/packages/Spire.PDF/7.3.1

Sincerely,
Marcia
E-iceblue support team