Question

I have a sample string:

<num>1.</num> <Ref>véase anomalía de Ebstein</Ref> <num>2.</num> <Ref>-> vascularización</Ref> 

I wish to make a comma seperated string with the values inside ref tags.

I have tried the following:

            Regex r = new Regex('<ref>(?<match>.*?)</ref>');             Match m = r.Match(csv[4].ToLower());             if (m.Groups.Count > 0)             {                 if (m.Groups['match'].Captures.Count > 0)                 {                     foreach (Capture c in m.Groups['match'].Captures)                     {                         child.InnerText += c.Value + ', ';                            }                     child.InnerText = child.InnerText.Substring(0, child.InnerText.Length - 2).Replace('-> ', '');                 }             } 

But this only ever seems to find the value inside the first ref tag.

Where am I going wrong?

Answer 1

You want to be using Matches rather than match to get all matches that occur, something like:

Regex r = new Regex('<ref>(?<match>.*?)</ref>'); foreach (Match m in r.Matches(csv[4])) {     if (m.Groups.Count > 0)     {         if (m.Groups['match'].Captures.Count > 0)         {             foreach (Capture c in m.Groups['match'].Captures)             {                 child.InnerText += c.Value + ', ';             }             child.InnerText = child.InnerText.Substring(0, child.InnerText.Length - 2).Replace('-> ', '');         }     } }