PDFsharp & MigraDoc Foundation

PDFsharp - A .NET library for processing PDF & MigraDoc Foundation - Creating documents on the fly
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PostPosted: Sun Mar 09, 2014 1:03 pm 
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Joined: Fri Mar 07, 2014 8:52 am
Posts: 2
For some page configuration
NullReferenceException (Object reference not set to an instance of an object.)
occurs in
Code:
MigraDoc.Rendering.TableRenderer.CreateNextBottomBorderPosition()
MigraDoc.Rendering.TableRenderer.CreateBottomBorderMap()
MigraDoc.Rendering.TableRenderer.InitFormat(Area area, FormatInfo previousFormatInfo)
MigraDoc.Rendering.TableRenderer.Format(Area area, FormatInfo previousFormatInfo)
MigraDoc.Rendering.TopDownFormatter.FormatOnAreas(XGraphics gfx, Boolean topLevel)
MigraDoc.Rendering.FormattedDocument.Format(XGraphics gfx)
MigraDoc.Rendering.DocumentRenderer.PrepareDocument()


in code like this
Code:
document = CreateDocument(... some params ...);
MigraDoc.Rendering.DocumentRenderer docRenderer = new DocumentRenderer(document);
docRenderer.PrepareDocument();


I was able to reproduce this bug in console C# application with "PDFSharp + MigraDoc" installed via NuGet
Code:
using MigraDoc.DocumentObjectModel;
using MigraDoc.DocumentObjectModel.Tables;
using MigraDoc.Rendering;
using PdfSharp.Pdf;
using System.Diagnostics;

namespace PDFSharpTest
{
    class Program
    {
        static void Main(string[] args)
        {
            var doc = new Document();
            Section section = doc.AddSection();

            var table = section.AddTable();
            table.Borders.Width = 0.25;

            table.AddColumn();
            table.AddColumn();
            table.AddColumn();

            Row row;
            row = table.AddRow(); // row 1
                row.Cells[0].AddParagraph("Item 11");
                row.Cells[0].MergeDown = 5;

                row.Cells[1].AddParagraph("Item 21");
                row.Cells[1].MergeDown = 1;

                row.Cells[2].AddParagraph("Item 31");
                row.Cells[2].MergeDown = 2;

            row = table.AddRow(); // row 2

            row = table.AddRow(); // row 3
                row.Cells[1].AddParagraph("Item 23");
                row.Cells[1].MergeDown = 1;

            row = table.AddRow(); // row 4
                row.Cells[2].AddParagraph("Item 34");
                row.Cells[2].MergeDown = 2;

            row = table.AddRow(); // row 5
                row.Cells[1].AddParagraph("Item 25");
                row.Cells[1].MergeDown = 1;

            row = table.AddRow(); // row 6

            var pdfRenderer = new PdfDocumentRenderer(true, PdfFontEmbedding.Always);
            pdfRenderer.Document = doc;
            pdfRenderer.RenderDocument();
            pdfRenderer.PdfDocument.Save("Result.pdf");
            // ...and start a viewer.
            Process.Start("Result.pdf");
        }
    }
}


Code:
An unhandled exception of type 'System.NullReferenceException' occurred in MigraDoc.Rendering.dll
Additional information: Object reference not set to an instance of an object.


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