sharepoint 2010 - Watermarking pdf on document upload -
i want add functionality of adding watermark using itextsharp library pdf document being added library. created event listener triggered when item being added. code follows :
using system; using system.security.permissions; using microsoft.sharepoint; using microsoft.sharepoint.utilities; using microsoft.sharepoint.workflow; using itextsharp.text; using itextsharp.text.pdf; using system.io; namespace projectprac.watermarkonupload { /// <summary> /// list item events /// </summary> public class watermarkonupload : spitemeventreceiver { /// <summary> /// item being added. /// </summary> public override void itemadding(spitemeventproperties properties) { base.itemadding(properties); string watermarkedfile = "watermarked.pdf"; // creating watermark on separate layer // creating itextsharp.text.pdf.pdfreader object read existing pdf document pdfreader reader1 = new pdfreader("c:\\users\\desktop\\hello.pdf"); //the relative path using (filestream fs = new filestream(watermarkedfile, filemode.create, fileaccess.write, fileshare.none)) // creating itextsharp.text.pdf.pdfstamper object write data itextsharp.text.pdf.pdfreader object filestream object using (pdfstamper stamper = new pdfstamper(reader1, fs)) { // getting total number of pages of existing document int pagecount = reader1.numberofpages; // create new layer watermark pdflayer layer = new pdflayer("watermarklayer", stamper.writer); // loop through each page (int = 1; <= pagecount; i++) { // getting page size rectangle rect = reader1.getpagesize(i); // contentbyte object pdfcontentbyte cb = stamper.getundercontent(i); // tell cb next commands should "bound" new layer cb.beginlayer(layer); cb.setfontandsize(basefont.createfont( basefont.helvetica, basefont.cp1252, basefont.not_embedded), 50); pdfgstate gstate = new pdfgstate(); gstate.fillopacity = 0.25f; cb.setgstate(gstate); cb.setcolorfill(basecolor.black); cb.begintext(); cb.showtextaligned(pdfcontentbyte.align_center, "confidential", rect.width / 2, rect.height / 2, 45f); cb.endtext(); // close layer cb.endlayer(); } } } i want know how add path without hardcoding here :
pdfreader reader1 = new pdfreader("c:\\users\\desktop\\hello.pdf"); //the relative path and uploading watermarked document library , not original pdf. know can done through workflow pretty new sharepoint. if @ have answer has workflow in please give link explains workflow automating pdf watermarking.
you don't need have workflow achieve looking for:
first, use itemadded event instead of itemadding. can access spfile associated updated list item.
public override void itemadded(spitemeventproperties properties) { var password = string.empty; //or put password handling splistitem listitemtofile = properties.listitem; spfile pdforiginalfile = listitemtofile.file; //get byte[] of uploaded file byte[] contentpdforiginalfile = pdforiginalfile.openbinary(); //create reader byte[] var pdfreader = new pdfreader(new randomaccessfileorarray(contentpdforiginalfile), password); using (var ms = new memorystream()) { using (var stamper = new pdfstamper(pdfreader, ms, '\0', true)) { // watermarking stuff ... // resuming sp stuff } var watermarkedpdfcontent = ms.toarray(); base.eventfiringenabled = false; //to prevent other events being fired var folder = pdforiginalfile.parentfolder;//you want upload same place folder.files.add(contentpdforiginalfile.name, fs.toarray(),true); base.eventfiringenabled = true; } } i did typo or 2 since didn't run code. however, should give idea.