Itextsharp PDF generation problem set

 

Recently, I want to create a PDF Project generated by Asp.net. I found that the DLL generated by itextsharp on the Internet is still good,

I encountered a lot of problems during development and found a lot of information on the Internet. I summarized a knowledge point here and made some comments on the key points to help my friends in the park.

 

Using system; using system. web; using system. io; using itextsharp. text; using itextsharp.text.pdf; public class PDF: ihttphandler {public void processrequest (httpcontext context) {rectangle rect = new rectangle (8.5f * 72, 11*72 ); // set the paper size by yourself. Document document = new document (rect, 20, 20, 80, 20); // document = new document (pagesize. a4); // you can specify the paper size as string pdffile = context. server. mappath ("sampleath"); extends writer. getinstance (document, new filestream (pdffile, filemode. create); document. open (); // set the document background image string imgpath = context. server. mappath (".. /images/2012/bg2.png "); image = image. getinstance (imgpath); image. setabsoluteposition (0, 0); image. alignment = image. align_undefined; image. scaleabsolute (image. width, image. height); document. add (image); // set the document attributes in PDF. addauthor ("junny"); document. addcreationdate (); document. addcreator ("SBS. INC "); document. addheader ("email", "junny_sa@163.com"); document. addkeywords ("pdf"); document. addproducer (); document. addsubject ("this is subject"); document. addtitle ("this is Title"); // set the Chinese font basefont = createchinesefont (); // set the font type itextsharp. text. font titlefont = new itextsharp. text. font (basefont, 18, Font. bold); itextsharp. text. font normalfont = new itextsharp. text. font (basefont, 12), normalboldfont = new itextsharp. text. font (basefont, 10, Font. bold); itextsharp. text. font normalredfont = new itextsharp. text. font (basefont, 10, Font. normal | font. bold, basecolor. red); // set a blank line feed float normallineheight = 25f; paragraph pblank = new paragraph ("", normalfont); pblank. leading = normallineheight; document. add (pblank); float [] widths = new float [] {12f, 140f, 35f}; float padding = 3f; basecolor bgcolor = new basecolor (153,204,255 ); // set the background color pdfptable table = new pdfptable (3); // set it to a three-column table. setwidths (widths );
Table. addcell (createcellheader ("Create PDF", titlefont, 3, padding, padding, bgcolor); string [] id_arr = {"1", "2", "3 "}; string [] name_arr = {"junny", "kendy", "Sally"}; string [] phone_arr = {"178-894-7893 ", "378-822-7289", "221-842-9874"}; table. addcell (createcell ("ID", normalfont, false, 1, 0, padding, padding); table. addcell (createcell ("name", normalfont, false, 0, 0, padding, padding); table. addcell (createcell ("phone", normalfont, false, 0, 0, padding, padding); For (INT I = 0; I <3; I ++) {table. addcell (createcell (id_arr [I], normalfont, true, 0, 0, padding, padding); table. addcell (createcell (name_arr [I], normalfont, false, 0, 0, padding, padding); table. addcell (createcell (phone_arr [I], normalfont, false, 0, 0, padding, padding);} document. add (table); document. close ();}}

 

Createcell Method

/// <Summary> /// create a table row /// </Summary> /// <Param name = "TXT"> text </param> /// <Param name = "txtfont"> font </param> // <Param name = "image"> Add image </param> /// <Param name = "align"> alignment </param> /// <Param name = "colspan"> Cross-row count </param> /// <Param name = "padtop"> top padding </param> /// <Param name = "padbottom"> bottom padding </param> /// <returns> table row </returns> Public static partition pcell createcell (string txt, font txtfont, bool image, int align, int colspan, float padtop, float padbottom) {export pcell cell = new export pcell (); phrase pH = new phrase (txt, txtfont ); // here is an example of adding an image. By the way, if (image) {image IMG = image. getinstance (httpcontext. current. server. mappath (".. /images/view_add.png "); chunk ck = new chunk (IMG, 4,-4); // you can set the offset value for the image. add (CK);} cell. addelement (ph); If (padtop> 0) {Cell. paddingtop = padtop;} If (padbottom> 0) {Cell. paddingbottom = padbottom;} If (colspan> 0) {Cell. colspan = colspan;} // cell. border = 0; set table line cell. horizontalalignment = align; return cell ;}

 

 

Createcellheader Method

/// <Summary> /// create a table row /// </Summary> /// <Param name = "TXT"> text </param> /// <Param name = "txtfont"> font </param> /// <Param name = "colspan"> Cross-row count </param> /// <Param name = "padtop"> top padding </param> /// <Param name = "padbottom"> bottom padding </param> /// <Param name = "bgcolor"> background color </param> // /<returns> table row </returns> Public static partition pcell createcellheader (string txt, font txtfont, int colspan, float padtop, float padbottom, basecolor bgcolor) {symbol pcell cell = new symbol pcell (new phrase (txt, txtfont); If (padtop> 0) {Cell. paddingtop = padtop;} If (padbottom> 0) {Cell. paddingbottom = padbottom;} If (colspan> 0) {Cell. colspan = colspan;} // cell. border = 0; cell. horizontalalignment = element. align_center; // 0 = left, 1 = centre, 2 = right cell. verticalalignment = element. align_middle; cell. backgroundcolor = bgcolor; return cell ;}

 

 

// Set the Chinese font

Public static basefont createchinesefont () {* // set the boldface type here, return basefont. createfont (@ "C: \ WINDOWS \ fonts \ simhei. TTF ", basefont. identity_h, basefont. not_embedded );}

 

Example: