c# - Save As dialog box when downloading PDF file -
i'm trying allow webapp download pdf file save dialog. however, after trying, there wasn't save dialog box appeared when used chrome/firefox. when use ie, given error
could error between browser? have saved / convert pdf file bytes.
protected void btnpdf_click(object sender, eventargs e) { //byte array hold our pdf, empty byte[] bytes; //instead of filestream we'll use memorystream using (var ms = new system.io.memorystream()) { //standard pdf setup, itext doesn't care type of stream we're using var doc = new itextsharp.text.document(); var writer = itextsharp.text.pdf.pdfwriter.getinstance(doc, ms); doc.open(); pdfptable table = new pdfptable(1); table.totalwidth = 585f; table.lockedwidth = true; var logo = itextsharp.text.image.getinstance(server.mappath("~/image/logo.jpg")); doc.add(logo); var titlefont = fontfactory.getfont("arial", 18, font.bold); doc.add(new paragraph("officer's profile. officer's police id: " + ddlcase.selectedvalue, titlefont)); var normalfont = fontfactory.getfont(fontfactory.helvetica, 14, font.bold); var phrase = new phrase(); sqlconnection con = new sqlconnection("data source = localhost; initial catalog = project; integrated security = sspi"); sqlcommand cm = new sqlcommand("select lrp.fullname, pp.profilepic, pp.rank, lrp.policeid, lrp.nric, lrp.email, lrp.contact, lrp.address,lrp.location, pp.achievement, pp.medal1, pp.medal2, pp.medal3, pp.medal4, pp.medal5 loginregisterpolice lrp, policeprofile pp lrp.policeid = '" + ddlcase.selectedvalue + "' , pp.policeid = lrp.policeid", con); con.open(); sqldatareader dr; dr = cm.executereader(); if (dr.read()) { phrase.add(new chunk("full name :", normalfont)); phrase.add(dr[0].tostring()); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("profile picture :\u00a0", normalfont)); byte[] bytes1 = (byte[])dr[1]; itextsharp.text.image image1 = itextsharp.text.image.getinstance(bytes1); image1.scaletofit(100f, 250f); chunk imagechunk1 = new chunk(image1, 0, 0); phrase.add(imagechunk1); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("rank : ", normalfont)); byte[] bytes2 = (byte[])dr[2]; itextsharp.text.image image2 = itextsharp.text.image.getinstance(bytes2); image2.scaletofit(40f, 300f); chunk imagechunk2 = new chunk(image2, 0, 0); phrase.add(imagechunk2); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("police id :", normalfont)); phrase.add(dr[3].tostring()); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("nric :", normalfont)); phrase.add(dr[4].tostring()); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("email :", normalfont)); phrase.add(dr[5].tostring()); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("contact :", normalfont)); phrase.add(dr[6].tostring()); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("address :", normalfont)); phrase.add(dr[7].tostring()); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("location :", normalfont)); phrase.add(dr[8].tostring()); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("achievement :", normalfont)); phrase.add(dr[9].tostring()); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(chunk.newline); phrase.add(new chunk("medal1", normalfont)); byte[] bytes3 = (byte[])dr[10]; itextsharp.text.image image3 = itextsharp.text.image.getinstance(bytes3); image3.scaletofit(800f, 800f); chunk imagechunk3 = new chunk(image3, 0, 0); phrase.add(imagechunk3); phrase.add(new chunk("medal2", normalfont)); byte[] bytes5 = (byte[])dr[11]; itextsharp.text.image image5 = itextsharp.text.image.getinstance(bytes5); image5.scaletofit(800f, 800f); chunk imagechunk5 = new chunk(image5, 0, 0); phrase.add(imagechunk5); phrase.add(new chunk("medal3", normalfont)); byte[] bytes6 = (byte[])dr[12]; itextsharp.text.image image6 = itextsharp.text.image.getinstance(bytes6); image6.scaletofit(800f, 800f); chunk imagechunk6 = new chunk(image6, 0, 0); phrase.add(imagechunk6); phrase.add(new chunk("medal4", normalfont)); byte[] bytes7 = (byte[])dr[13]; itextsharp.text.image image7 = itextsharp.text.image.getinstance(bytes7); image7.scaletofit(800f, 800f); chunk imagechunk7 = new chunk(image7, 0, 0); phrase.add(imagechunk7); phrase.add(new chunk("medal5", normalfont)); byte[] bytes8 = (byte[])dr[14]; itextsharp.text.image image8 = itextsharp.text.image.getinstance(bytes8); image8.scaletofit(800f, 800f); chunk imagechunk8 = new chunk(image8, 0, 0); phrase.add(imagechunk8); table.addcell(phrase); } dr.close(); doc.add(table); doc.close(); //grab raw bytes memorystream bytes = ms.toarray(); } //at point itext work done , we're dealing raw asp.net parts //clear current response buffer response.clear(); //instead of normal text/html header tell browser we've got pdf response.contenttype = "application/pdf"; //tell browser want file downloaded (ideally) , give pretty filename response.addheader("content-disposition", "attachment;filename=mysamplefile.pdf"); //write our bytes stream response.binarywrite(bytes); //close stream (otherwise asp.net might continue write stuff on our behalf) response.end(); } } would appreciate if tell me if did wrong here.
i believe issue contenttype. if change to "application/octet-stream", should resolve problem.
response.contenttype = "application/octet-stream"; you can try adding:
response.flush() response.close() before response.end(). not of buffered data has been transmitted client before ending response.
if doesn't work, should verify have data send in bytes array.
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