c# - After filling PDF with iTextSharp, form is not savable/ usage rights removed -

i working on process use itextsharp partially fill pdf form. form emailed user , user finish completing form. form submitted email our email account , processed.

my problem once pdf sent out user, when user opens form , data can not saved. original pdf used template can filled out saved. somehow, during process of using itextsharp, form losing usage rights. there way retain usage rights while using itextsharp?

i hoping here can point out going wrong, or point me in right direction. time , help.

below code:

using dapper; using itextsharp.text.pdf; using nlog; using pilotdispatch.domain.model; using system; using system.collections; using system.collections.generic; using system.configuration; using system.data.oledb; using system.io; using system.linq;  namespace eticketpdffactory {     class program     {         const string templateitextpdfpath = @"c:\pdf\factory\eticketformportrait.pdf";         const string outputitextpdfpath = @"c:\pdf\factory\eticketformportraitout.pdf";       private static readonly logger logger = logmanager.getcurrentclasslogger();          static void main(string[] args)         {             var logid = string.empty;             if (args.length > 0)             {                 logid = args[0];             }             else             {                 logger.error("no logid supplied");                 return;             }              var rundownquery =                 string.format(                     "select * rundown_table left join vessels on vessels.callsign = rundown_table.call_sign rundown_table.log_id = '{0}'",                     logid);               eticketpdf ticket;             ienumerable<pilottransportation> pilottransportations = null;              using (var cn = new oledbconnection(configurationmanager.connectionstrings["pervasiveconnection"].connectionstring))             {                 cn.open();                // ticket = cn.query<eticketpdf>(pervasivequerystring, new { log_id = logid }).firstordefault(); // not working pervasive                 ticket = cn.query<eticketpdf>(rundownquery).firstordefault();                  if (ticket != null)                 {                     var transportationquery =                         string.format(                             "select * pilottransportation pilotcode = '{0}'",                             ticket.pilot_code);                      pilottransportations = cn.query<pilottransportation>(transportationquery);                 }                  cn.close();             }              if (ticket == null)             {                 logger.error("no records found given logid");                 return;             }             var pilotoptions = pilottransportations.select(opt => string.format("{0} - {1}", opt.vendorid, opt.name)).toarray();               var reader = new pdfreader(templateitextpdfpath);             var stamper = new pdfstamper(reader, new filestream(outputitextpdfpath, filemode.open));             //var stamper = new pdfstamper(reader, new filestream(outputitextpdfpath, filemode.createnew, fileaccess.write), '\0', true);             var formfields = stamper.acrofields;              formfields.setlistoption("form[0].page1[0].vendoridfrom1[0]", null, pilotoptions);             formfields.setlistoption("form[0].page1[0].vendoridto1[0]", null, pilotoptions);             formfields.setlistoption("form[0].page1[0].vendoridfrom2[0]", null, pilotoptions);             formfields.setlistoption("form[0].page1[0].vendoridto2[0]", null, pilotoptions);              var properties = ticket.gettype().getproperties();              foreach (var prop in properties)             {                 var name = prop.name;                 var propval = prop.getvalue(ticket, null);                  if (propval != null)                 {                     if (name == "order_date")                     {                         if(convert.todatetime(propval).year < 1902)continue;                     }                      formfields.setfield(name, propval.tostring());                 }              }              reader.removeusagerights();             stamper.close();             reader.close();              file.copy(outputitextpdfpath, path.getdirectoryname(outputitextpdfpath) + "/" + logid + ".pdf");              console.writeline("finished");             console.readline();         }     } } 

once again, in advance pointers or can offer me.

the answer commented out in own source code.

you need:

var stamper = new pdfstamper(reader, new filestream(...), '\0', true); 

instead of:

var stamper = new pdfstamper(reader, new filestream(...)); 

your question duplicate of how correctly fill in xfa form data using itextsharp allow editing , saving result in acrobat xi , can find more elaborate answer here.

also: complain usage rights removed, if so, why see line in code:

reader.removeusagerights(); 

that line removes usage rights , therfore form can no longer saved locally when using adobe reader.