c# - itext7 not creating new pdf-page automatically -


when add multiple tables itext7 pdf , number of tables more fits in 1 page following exception gets thrown.

exception: "object reference not set instance of object." source: "itext.layout" stacktrace: "at itext.layout.renderer.tablerenderer.layout(layoutcontext layoutcontext) @ itext.layout.renderer.rootrenderer.addchild(irenderer renderer) @ itext.layout.rootelement1.add[t2](blockelement1 element) @ itext.layout.document.add[t](blockelement`1 element) @ itextsharp7_test.controllers.pdfcontroller.replicatebug(string pdffile) in c:\users\me\documents\visual studio 2015\projects\app_test\itextsharp7_test\controllers\pdfcontroller.cs:line 443"

in provided example exception gets thrown when 6th table added.

the way have been able handle issue assuming exception thrown adding more data pdf fits in 1 page , add new page within try catch block, solution ugly , not in long term.

example:

public void replicatebug(string pdffile) {     itext.kernel.pdf.pdfwriter writer = null;     itext.kernel.pdf.pdfdocument pdf = null;     itext.layout.document document = null;      try     {         writer = new itext.kernel.pdf.pdfwriter(pdffile);         pdf = new itext.kernel.pdf.pdfdocument(writer);         document = new itext.layout.document(pdf, itext.kernel.geom.pagesize.a4);         document.add(new itext.layout.element.paragraph("*** products ***"));         itext.kernel.pdf.canvas.draw.dashedline dashedline = new itext.kernel.pdf.canvas.draw.dashedline();         document.add(new itext.layout.element.lineseparator(dashedline));          itext.layout.element.table table = null;          (int = 0; < 10; ++i)         {             itext.layout.element.cell cell = null;              table = new itext.layout.element.table(2);             table.setmargintop(10);              cell = new itext.layout.element.cell().add("-- product --");             table.addcell(cell);             cell = new itext.layout.element.cell(3, 1).add("image");             cell.sethorizontalalignment(itext.layout.properties.horizontalalignment.center);             cell.setverticalalignment(itext.layout.properties.verticalalignment.middle);             table.addcell(cell);             cell = new itext.layout.element.cell().add("product text." + environment.newline + "welcome");             cell.setheight(75);             table.addcell(cell);             cell = new itext.layout.element.cell().add((i + 1).tostring().padleft(10, '0'));             table.addcell(cell);              try             {                 document.add(table);                 document.add(new itext.layout.element.lineseparator(dashedline));   // default linewidth 1             }             catch             {                 // note: after adding 5 tables pdf exception thrown of following kind.                  // exception: "object reference not set instance of object."                 // source: "itext.layout"                 // stacktrace: "at itext.layout.renderer.tablerenderer.layout(layoutcontext layoutcontext)                 //              @ itext.layout.renderer.rootrenderer.addchild(irenderer renderer)                 //              @ itext.layout.rootelement`1.add[t2](blockelement`1 element)                 //              @ itext.layout.document.add[t](blockelement`1 element)                 //              @ itextsharp7_test.controllers.pdfcontroller.replicatebug(string pdffile) in c:\\users\\me\\documents\\visual studio 2015\\projects\\app_test\\itextsharp7_test\\controllers\\pdfcontroller.cs:line 443"             }         }          document.close();         pdf.close();         writer.close();     }     catch     {         if (document != null)         {             document.close();         }          if (pdf != null)         {             pdf.close();         }          if (writer != null)         {             writer.close();         }          throw;     } }

thanks in advance

this issues has been fixed in 7.0.2 (and 7.0.2-snapshot, known 7.0.1.1 in .net version). snapshot nuget package can downloaded artifactory. 7.0.2 release version available on nuget in nearest weeks.


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