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 Post subject: Deleted column in table
PostPosted: Tue Jun 11, 2024 12:33 pm 
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It is posible deleted column in created table?


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PostPosted: Tue Jun 11, 2024 1:18 pm 
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It is possible to delete a column from a MigraDoc table.

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PostPosted: Tue Jun 11, 2024 6:01 pm 
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Sorry,
is it possible to delete a column from a MigraDoc table, which method to use?


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PostPosted: Wed Jun 12, 2024 6:41 am 
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The MigraDoc "Table" class has a "Columns" property that provides the "RemoveObjectAt" method. Index is 0-based.

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PostPosted: Wed Jun 12, 2024 7:57 am 
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When I use "RemoveObjectAt" method, pdfRenderer.RenderDocument(); calls Exception:

Code:
System.NullReferenceException
  HResult=0x80004003
  Message=Object reference not set to an instance of an object.
  Source=MigraDoc.DocumentObjectModel
  StackTrace:
   at MigraDoc.DocumentObjectModel.Visitors.VisitorBase.VisitParagraph(Paragraph paragraph)
   at MigraDoc.DocumentObjectModel.Paragraph.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.DocumentElements.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.Tables.Cell.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.Tables.Row.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.Tables.Rows.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.Tables.Table.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.DocumentElements.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.Section.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.Sections.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.Document.MigraDoc.DocumentObjectModel.Visitors.IVisitable.AcceptVisitor(DocumentObjectVisitor visitor, Boolean visitChildren)
   at MigraDoc.DocumentObjectModel.Visitors.VisitorBase.Visit(DocumentObject documentObject)
   at MigraDoc.Rendering.DocumentRenderer.PrepareDocument()
   at MigraDoc.Rendering.PdfDocumentRenderer.PrepareDocumentRenderer(Boolean prepareCompletely)
   at MigraDoc.Rendering.PdfDocumentRenderer.PrepareRenderPages()
   at MigraDoc.Rendering.PdfDocumentRenderer.RenderDocument()


My method:

Code:
        public static void TabelWithBorderTest()
        {
           var document = new Document();

           // Add a section to the document.
           var section = document.AddSection();

           Table table = section.AddTable();
           table.Borders.Width = 0.25;
           table.Rows.LeftIndent = 0;

           // Before you can add a row, you must define the columns
           Column column = table.AddColumn("7cm");
           column.Format.Alignment = ParagraphAlignment.Left;
            //
            table.AddColumn("8cm");
            //

           Row row = table.AddRow();
           row.Cells[0].AddParagraph("Text 1");
            //
            row.Cells[1].AddParagraph("Text 2");
            table.Columns.RemoveObjectAt(0);
            //

            // Create a renderer for the MigraDoc document.
            var pdfRenderer = new PdfDocumentRenderer(false) { Document = document };

           // Associate the MigraDoc document with a renderer.

           // Layout and render document to PDF.
           pdfRenderer.RenderDocument();

           // Save the document...
           const string filename = "Table.pdf";
           pdfRenderer.PdfDocument.Save(filename);
           // ...and start a viewer.
           Process.Start(filename);
        }


Any ideas?


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PostPosted: Wed Jun 12, 2024 8:29 am 
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viking wrote:
Any ideas?
I have no idea why you add a column and then delete it again, but it should work.
Are you using 6.1.0 final?

See also:
https://docs.pdfsharp.net/General/Issue-Reporting.html

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PostPosted: Wed Jun 12, 2024 10:11 am 
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I use 6.1.0 final.
I have table in two variants.
I create first all columns, next delete selected.


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PostPosted: Thu Jun 13, 2024 8:05 am 
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When I create all columns but I dont use AddParagraph(); program is correct
Example:
Code:
Table table = section.AddTable();

table.AddColumn("7cm");
table.AddColumn("7cm");

Row row = table.AddRow();
table.Rows[0].Cells[0].AddParagraph("Text 1");

table.Columns.RemoveObjectAt(1);


If I use AddParagraph(); calls Exception

in attach my project.


Attachments:
ConsoleAppPDF.rar [18.62 KiB]
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