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WPF FlowDocument Paragraph Inlines Length

Are there any restrictions on the WPF Document.Paragraph object when using the FlowDocument control?

My FlowDocument becomes empty when I add a paragraph that contains more than 450 lines per paragraph. I couldn't find anything in the MSDN documentation regarding max. length, etc.

Any ideas why this is happening?

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2 answers


The problem is fixed if IsOptimalParagraphEnabled is set to False. Then the content will be displayed.



It looks like this property is causing problems with large paragraphs.

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I did a quick test and added 10,000 Runs to the Paragraph and the FlowDocument seemed to display them in order (although it took a little bit to calculate the number of pages):

Paragraph p = new Paragraph();
for (int i = 0; i < 10000; i++)
{
    p.Inlines.Add(new Run(String.Format("({0}) Sphinx of black quartz, judge my vow! ", i)));
}
wnd.Content = new FlowDocument(p);


Is there something special about the lines you add to a paragraph?

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