how to append custom meta data like to PDF file?

Posted on Author VeryPDF / 170 Views
Hello Sir,
Please tell me that how to append custom meta data like info.Add("Subject", Desc) but also not overwrite the previous meta data
i.e  Subject : abc , xyz, def....etc.

string abc = Server.MapPath("~//Files//") + "new" + PAddress;
PdfStamper writer = new PdfStamper(reader, new FileStream(abc, FileMode.Create, FileAccess.Write));
Hashtable info = new Hashtable();
info.Add("Subject", Desc);
writer.MoreInfo = info;
writer.Close();


When i used this it overwrite the previous meta data with the new meta data....but i don't want to overwrite the previous one....


Please reply me as soon as possible....

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Our Advanced PDF Tools Command Line v3.0 product has this function, please download Advanced PDF Tools Command Line v3.0 from following web page to try,

https://www.verypdf.com/pdfinfoeditor/index.html#dl

https://www.verypdf.com/pdfinfoeditor/advanced_pdf_tools_cmd.zip

you can use following command lines to add new information to PDF file,


-y
There are several ways to add new information like follows:
Add new custom Properties to an existing PDF file and overwrite original custom Properties,
pdftools -i "C:\input.pdf" -o "C:\output.pdf" -y "key1=value1,key2=value2"
or
pdftools -i "C:\input.pdf" -o "C:\output.pdf" -y "/key1(value1) /key2(value2)"
Append new custom Properties  to an existing PDF file,
pdftools -i "C:\input.pdf" -o "C:\output.pdf" -y "+key1=value1,key2=value2"
or
pdftools -i "C:\input.pdf" -o "C:\output.pdf" -y "+/key1(value1) /key2(value2)"
e.g.
pdftools -i "C:\input.pdf" -o "C:\output.pdf" -y "Our Company=VeryPDF Company, Support Email=support@verypdf.com, Our Web URL=https://www.verypdf.com"
or
pdftools -i "C:\input.pdf" -o "C:\output.pdf" -y "/Our#20Company(VeryPDF Company) /Support#20Email(support@verypdf.com) /Our#20Web#20URL(https://www.verypdf.com)"
or
pdftools -i "C:\input.pdf" -o "C:\output.pdf" -y "+/Our#20Company(VeryPDF Company) /Support#20Email(support@verypdf.com) /Our#20Web#20URL(https://www.verypdf.com)"

VeryPDF

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