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POItextSharp nested table on multiple pages causes NullReferenceException
 

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  1. POItextSharp nested table on multiple pages causes NullReferenceException
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    <p>I am getting a NullReferenceException when the following code is executed. I have also noticed that the nested table appeared on a new page when I added in the code that wrote cells to the main table. It doesn't occur if I take out the two loops that write cells to the main table.</p> <pre><code>&lt;%@ Page Title="" Language="C#" MasterPageFile="~/Main.master" %&gt; &lt;%@ Import Namespace="iTextSharp.text" %&gt; &lt;%@ Import Namespace="iTextSharp.text.pdf" %&gt; &lt;%@ Import Namespace="System.IO" %&gt; &lt;script runat="server"&gt; protected void Page_Load(object sender, EventArgs e) { Document doc = new Document(PageSize.LETTER); // Here is some stuff needed to put the pdf into the users response stream Response.Clear(); Response.ContentType = "application/pdf"; MemoryStream memoryStream = new MemoryStream(); PdfWriter writer = PdfWriter.GetInstance(doc, memoryStream); writer.CloseStream = false; // This is important, but it may work without it doc.SetMargins(20, 20, 36, 10); // write stuff to the documents doc.Open(); doc.Add(GenerateNestedTableTest()); doc.Close(); // Now that all writing to the document is done lets send it to the user writer.Flush(); Response.OutputStream.Write(memoryStream.GetBuffer(), 0, memoryStream.GetBuffer().Length); Response.OutputStream.Flush(); Response.OutputStream.Close(); Response.End(); } private PdfPTable GenerateNestedTableTest() { PdfPTable mainTable = new PdfPTable(5); // test adding cells to mainTable in groups of 5 for (int i = 0; i &lt;= 5 * 10; ++i) { PdfPCell mainTableCell = new PdfPCell(new Phrase("Test")); mainTable.AddCell(mainTableCell); } PdfPTable nestedTable = new PdfPTable(3); Font TitleFont = new Font(null, 20, Font.BOLD, Color.BLACK); PdfPCell TitleCell = new PdfPCell(new Phrase("This is the header of the nested table", TitleFont)); TitleCell.Colspan = 3; nestedTable.AddCell(TitleCell); string[] headers = new string[] { "Header1", "Header2", "Header3" }; foreach (string header in headers) { PdfPCell HeaderCell = new PdfPCell(new Phrase(header, new Font(null, 14, Font.BOLD, Color.BLUE))); HeaderCell.HorizontalAlignment = Element.ALIGN_CENTER; nestedTable.AddCell(HeaderCell); } for (int i = 0; i &lt;= 3*556; ++i) { nestedTable.AddCell(new Phrase("Test Cell")); } PdfPCell nestedTableCell = new PdfPCell(nestedTable); nestedTableCell.Colspan = 4; mainTable.AddCell(new PdfPCell()); mainTable.AddCell(nestedTableCell); // test adding cells to mainTable in groups of 5 for (int i = 0; i &lt;= 5 * 10; ++i) { PdfPCell mainTableCell = new PdfPCell(new Phrase("Test")); mainTable.AddCell(mainTableCell); } return mainTable; } &lt;/script&gt; &lt;asp:Content ID="Content1" ContentPlaceHolderID="PageHeadContentPlaceHolder" Runat="Server"&gt; &lt;/asp:Content&gt; &lt;asp:Content ID="Content2" ContentPlaceHolderID="PageTitleContentPlaceHolder" Runat="Server"&gt; &lt;/asp:Content&gt; &lt;asp:Content ID="Content3" ContentPlaceHolderID="PageBodyContentPlaceHolder" Runat="Server"&gt; &lt;/asp:Content&gt; </code></pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. US249076
    1. US249076
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COOn which line are you getting the exception?
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      1. POItextSharp nested table on multiple pages causes NullReferenceException
      1. USJay Riggs
    2. COdoc.Add(GenerateNestedTableTest());
      singulars
      1. POItextSharp nested table on multiple pages causes NullReferenceException
      1. US249076
 

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