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How to Make Bold only a Part of the Text in a Paragraph with RadWordsProcessing


Version Product Author
2024.1.124 RadWordsProcessing Desislava Yordanova


Learn how to create a bold text part in a paragraph using RadWordsProcessing, while keeping the rest of the information regular.


To achieve bold text for a specific part of an inline element, such as a Run, you need to use two separate Run objects with different font weights and sizes. Here is an example of how to accomplish this using Telerik RadWordsProcessing:

RadFlowDocument document = new RadFlowDocument();
RadFlowDocumentEditor editor = new RadFlowDocumentEditor(document);
Section section = editor.InsertSection();
Paragraph paragraph = section.Blocks.AddParagraph();

Run articleTitle = new Run(document);
articleTitle.Text = "Bold ";
articleTitle.FontWeight = FontWeights.Bold;
articleTitle.FontSize = 16;

Run articleValue = new Run(document);
articleValue.Text = "Regular";
articleValue.FontWeight = FontWeights.Normal;
articleValue.FontSize = 18;

Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider provider = new Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider();
string outputFilePath = "output.docx";
using (Stream output = File.OpenWrite(outputFilePath))
    provider.Export(document, output);

Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });

This code creates a RadFlowDocument and inserts a section and a paragraph. Two separate Run objects are used to define the bold and the regular text. Finally, the document is exported to a DOCX file and opened.

Create Bold Text

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