Eric White's Blog

Hi Eric,

thanks for your reply. I am in the middle of trying to convert my code over to use OpenXmlRegex. I followed the link and also watched one of your YouTube videos about it and can’t get the replace to work despite the fact I think I am calling correctly. I can find matches with the regex but not replace the value. I am in the UK so at home now so will try again tomorrow when if the office. I think it might be because all my existing code was based on WordprocessingDocument and now I have had to call doc.MainDocumentPart.GetXDocument(); and manipulate that. Maybe it’s not persisting back and I have to save to the same stream?

public void ReplaceFirst(WordprocessingDocument doc, params KeyValuePair<string, string>[] kvps)
        {
            var xdoc = doc.MainDocumentPart.GetXDocument();

            foreach (var kvp in kvps)
            {
                

                //OOXML library does not like null or empty
                string value = (kvp.Value == null || kvp.Value == string.Empty) ? " " : kvp.Value;

                logger.LogDebug("Applying value: [" + kvp.Key + "] " + value);
                //var content = doc.MainDocumentPart.Document.Body.Descendants<Text>();
                var content = xdoc.Descendants(W.p);

                logger.LogDebug("Found " + content.Count() + " text elements to search");
                //var regex = new Regex(VariablePrefix + kvp.Key + VariableSuffix);
                var regex = new Regex("contact");

                logger.LogDebug(OpenXmlRegex.Match(content, regex) + " matches");

                bool isFirstReplacement = true;
                OpenXmlRegex.Replace(content, regex, value, (xElement, match) =>
                {
                    if (isFirstReplacement)
                    {
                        isFirstReplacement = false;
                        logger.LogDebug("Replaced match");
                        return true;
                    }
                    logger.LogDebug("Did not replace match");
                    return false;
                }
                );

                
                //TextReplacer.SearchAndReplace(doc, VariablePrefix + kvp.Key + VariableSuffix, value, false);
            }
            

        }

Later on the WordprocessingDocument is saved via wordDoc.MainDocumentPart.Document.Save()

I am wondering if I need to do something to see changes in a WordProcessingDocument caused by OpenXmlRegex against an XDocument.

Thanks

Hi Eric,

thanks for your help. I got this working for the revision/change tracking code. Strangely I had to leave some other code using TextReplacer instead of OpenXmlRegex because I couldn’t get the two object trees (OM vs using LINQ to XML) to sync in memory but only for that case. I have to keep the former object model because it seems easier when inserting new element. I have to do that to append breaks after newline characters otherwise the new lines don’t work and do a little paragraph object manipulation elsewhere for a superfluous blank page issue. Perhaps it would have been easier than I thought to do via Linq to SQL but I like the properties and methods on the OM classes.

Thanks!