How to parse a string with html table tags?

You can use HTML Agility Pack. to achieve this

HtmlDocument doc = new HtmlDocument();
doc.Parse(str);

IEnumerable<string> cells = doc.DocumentNode.Descendants("td").Select(td => td.InnerText);

string s = "<tr><td>abc</td><td>1</td><td>def</td></tr><tr><td>aaa</td><td>2</td><td>bbb</td></tr>";
s = s.Replace("<tr>","").Replace("</tr>","").Replace("</td>","");
string[] val = s.Split(new string[] { "<td>" }, StringSplitOptions.None);

string one = val[2];
string two = val[5];

I hope it will work for you.

Regex regex = new Regex("<td>(.*?)<\\/td>");
var maches = regex.Matches("<tr><td>abc</td><td>1</td><td>def</td></tr><tr><td>aaa</td><td>2</td><td>bbb</td></tr>");
var values = maches.Cast<Match>().Select(m => m.Groups[1].Value).ToList();

            string s = "<tr><td>abc</td><td>1</td><td>def</td></tr><tr><td>aaa</td><td>2</td><td>bbb</td></tr>";

            var regexPunctuation = s;
            while (regexPunctuation != "")
            {
                regexPunctuation = System.Text.RegularExpressions.Regex.Match(s, @"\d+").Value;
                s = s.Substring(s.IndexOf(regexPunctuation)+regexPunctuation.Length);
                MessageBox.Show(regexPunctuation);
            }

The regex matches every number in the string and the while loop goes through all of them. Do what ever you want intead of MessageBox.Show and you're good to go.

Good day Brom

This might not be the solution you were looking for but it will definitely provide one of the many help.

I would use this regex to extract all the tags

(<\/[a-z]*>)+(<[a-z]*>)+|(<[a-z]*>)+(<\/[a-z]*>)+|(<[a-z]*>)+|(<\/[a-z]*>)+

Example:

  string input = "<tr><td>abc</td><td>1</td><td>def</td></tr><tr><td>aaa</td><td>2</td><td>bbb</td></tr>";
  string replacement = "#";

  string pattern = "(<\/[a-z]*>)+(<[a-z]*>)+|(<[a-z]*>)+(<\/[a-z]*>)+|(<[a-z]*>)+|(<\/[a-z]*>)+";

  RegexOptions options = RegexOptions.IgnoreCase | RegexOptions.Compiled | 
  RegexOptions.Multiline;

  Regex rgx = new Regex(pattern, options);

  string result = rgx.Replace(input, replacement);
  // result == "#abc#1#def#aaa#2#bbb#"

This regex expression will grab the tags as groups or as individuals and then you could replace it with a delimiter line a pipe "|" or "#" and split on that. I hope this helps.

Kind Regards

Ps. Regex explanation: Pipes are used as or operators

(<\/[a-z]*>)+(<[a-z]*>)+ // Closing tag(s) that are followed by opening tag(s)
(<[a-z]*>)+(<\/[a-z]*>)+ // Opening tags followed by closing tags
(<[a-z]*>)+ // one or more opening tags
(<\/[a-z]*>)+ // one or more closing tags