Exporting a DataTable from WinForms to a docx file takes a lot of time

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Issue 类型
缺陷
描述清晰度
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技术栈
csharp
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backend

调研方向

Reproduce the report using the shown DocX.Create, InsertSection, AddTable, and InsertTableAfterSelf flow, comparing behavior between versions 2.3.0 and 2.4.0. Inspect why table-cell paragraphs remain empty and why section header/footer warnings appear during export. Done means table contents are populated and the export time is no longer unexpectedly slow.

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描述

Hi.
I've just updated from 2.3.0 to 2.4.0, because I just want to use the new parameter from Section page numeration. But now the exporting process takes a lot of time, and I don't know why, because I'm using the same code as I used on the previous version. What happened with the new version?

Edit: More than that, my all table is empty. Seems none of the paragraphs inside the table object are filled. But is the same code as in 2.3.0, what has been changed?

OK. I've started debugging this thing and I found the following:
After each line of code which is using some appending operation, or anything that involve an object on the file, I get the following lines of information in debugger:

This document contains more than 1 section. Consider using Sections[wantedSection].Headers.
This document contains more than 1 section. Consider using Sections[wantedSection].Headers.
This document contains more than 1 section. Consider using Sections[wantedSection].Headers.
This document contains more than 1 section. Consider using Sections[wantedSection].Footers.
This document contains more than 1 section. Consider using Sections[wantedSection].Footers.
This document contains more than 1 section. Consider using Sections[wantedSection].Footers.

My code is the following, what I'm doing wrong?

DocX doc = DocX.Create(filePath, DocumentTypes.Document);
while (doc.Sections.Count < numeGrup.Count)
{
    // I need to insert sections for each group in "numeGrup" list
    doc.InsertSection();
}
var sec = doc.Sections[0];
for (int k = 0; k < numeGrup.Count; k++)
{
    sec = doc.Sections[k];
    sec.PageLayout.Orientation = Orientation.Landscape;
    sec.PageNumberType.PageNumberStart = 1;
    sec.PageWidth = 800;
    sec.MarginLeft = 20;
    sec.MarginRight = 20;
    sec.MarginTop = 20;
    sec.MarginBottom = 20;
    sec.InsertParagraph(numeGrup[k].Key.Nume).SpacingBefore(20d).Font("Arial").FontSize(10).Bold().SpacingAfter(10d);
    var table = doc.AddTable(detaliiPeFirma.Count() + 1 + groups.Count, 9);
    table.SetTableCellMargin(TableCellMarginType.left, 1);
    table.SetTableCellMargin(TableCellMarginType.right, 1);
    table.SetTableCellMargin(TableCellMarginType.top, 1);
    table.SetTableCellMargin(TableCellMarginType.bottom, 1);
    var p = sec.InsertParagraph();
    p.InsertTableAfterSelf(table);
    table.Design = TableDesign.LightGrid;
    var headerRow = table.Rows.First();
    headerRow.TableHeader = true;
    headerRow.Cells[0].Paragraphs[0].Append("Field1").Bold().FontSize(10);
    headerRow.Cells[1].Paragraphs[0].Append("Field2").Bold().FontSize(10);
    headerRow.Cells[2].Paragraphs[0].Append("Field3").Bold().FontSize(10);
    headerRow.Cells[3].Paragraphs[0].Append("Field4").Bold().FontSize(10);
    headerRow.Cells[4].Paragraphs[0].Append("Field5").Bold().FontSize(10);
    headerRow.Cells[5].Paragraphs[0].Append("Field6").Bold().FontSize(10);
    headerRow.Cells[6].Paragraphs[0].Append("Field7").Bold().FontSize(10);
    headerRow.Cells[7].Paragraphs[0].Append("Field8").Bold().FontSize(10);
    headerRow.Cells[8].Paragraphs[0].Append("Field9").Bold().FontSize(10);
}

I put only a part of my code, the generation of tables and filling of headers of the tables. But no paragraph inside table's cells are filled. And it's working very slow now! Maybe because of those messages in the debugger?

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