Changing fonts with Open XML SDK 2.0

 

Take a look at the next code if you need to change or replace the font name or size on paragraphs of a Word Document.

 

using System.Xml.Linq ;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Wordprocessing;

private void changeFonts()
        {
            string myFile = @"\\MySharedFolder\myDoc.docx";

            WordprocessingDocument doc = WordprocessingDocument.Open(myFile, true);

            //iterate through paragraphs
            IList<Paragraph> paragraphs = doc.MainDocumentPart.Document.Body.Elements<Paragraph>().ToList<Paragraph>();

            foreach (Paragraph para in paragraphs)
            {

                foreach (Run r in para.Elements<Run>())
                {                 
                        foreach (RunProperties rp in r.Elements<RunProperties>())
                        {
                            try
                            {
                                //t  rp is our current RunProperty
                                rp.RunFonts.Ascii = "Arial";
                                FontSize myFontSize = new FontSize();
                                myFontSize.Val = new StringValue("50");
                                rp.FontSize = myFontSize;

                            }
                            catch (Exception ex) { }
                        }                   
                }
            }
            doc.MainDocumentPart.Document.Save();

        }