Question

My Problem is for particular case occurring in my project.

In my Html document,
I want to
replace <td> with <td class=”right”> for all tds except first one in a <tr> tag. (if there is <tr> inside a <tr> tag then that also needs to be handled).

If input is like:

<tr>
  <td>1</td>
  <td>2</td>
  <td>3</td>
<tr>

output should be like:

<tr>
  <td>1</td>
  <td class=”right”>2</td>
  <td class=”right”>3</td>
<tr>

I have tried..this code..

public static string tableFormat(string html)   // Add extra attribute to td
        {
            int start = 0, end = 0, trstart = 0, trend = 0;
           // html = CleanUpXHTML(html);  // clean unnecessary p tags
            while (html.Contains("<tr>"))
            {
                //start=end;
                trstart = html.IndexOf("<tr>", end);
                if (trstart == -1)
                    break;
                trend = html.IndexOf("</tr>", trstart);
                start = html.IndexOf("<td>", trstart);
                end = html.IndexOf("</td>", trend);
                while (end < trend)
                {

                    start = html.IndexOf("<td>", end);
                    html = html.Insert(start + 3, " class=\"right\"");
                    end = html.IndexOf("</td>", trstart);

                }
            }
            return html;
        }

Answer 1

just call this function from main:
Note:this code will work for valid html i.e xhtml

 public static string TableFormat(string xhtml)
    {
        int start = 0, end = 0, trstart = 0, trend = 0;

        while (trstart != -1)
        {
            //start=end;
            trstart = xhtml.IndexOf("<tr>", end);
            if (trstart == -1)
                break;
            trend = xhtml.IndexOf("</tr>", trstart);
            start = xhtml.IndexOf("<td>", trstart);
            end = xhtml.IndexOf("</td>", start);
            while (end < trend)
            {
                //int trackTr = 0;
                start = xhtml.IndexOf("<td>", end);
                if (start > trend)
                    break;
                xhtml = xhtml.Insert(start + 3, " class=\"right\"");

                end = xhtml.IndexOf("</td>", start);

            }
        }
        return (xhtml);
    }