Input string was not in a correct format.

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hey guys, wonder if you can help me with a issue with this piece of code

private void button7_Click(object sender, EventArgs e)
       {
           if (checkBox5.Checked == true)
           {

               Navigate("http://www.drugrunners.net/GroupSetup.cfm?Open=A,I&Sort=DrugValue&SortOrder=DESC", webBrowser3);
               string html = webBrowser3.DocumentText;
               string[] Target = Regex.Split(html, "<td class=\"tinytight\" width=\"100\">");
               for (int i = 1; i < Target.Length; i++)
               {
                   MessageBox.Show("New Person");
                   string[] Values = Regex.Split(Target[i],  "align=\"right\">");
                   for(int l = 1; l < Values.Length; l++)
                   {
                       if (l == 6)
                       {
                           int Troops = int.Parse(Regex.Split(Values[l], "/td>")[0]);
                           if (Troops < 30000)
                           {
                               MessageBox.Show("Confirmed");
                           }
                       }

i am informed that is is

int Troops = int.Parse(Regex.Split(Values[l], "/td>")[0]);

that is throwing the error

Many thanks in advance

Posted 3-Aug-14 7:18am

Dyn Yr Ogof

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 1 · 2014-08-03T07:29:00

Solution 1

I think

Regex.Split(Values[l], "/td>")[0]

Is not a String. int.Parse(); need string parameter.

Posted 3-Aug-14 7:29am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Sergey Alexandrovich Kryukov · Answer 2 · 2014-08-03T10:09:00

Instead of parsing some specific HTML elements with Regex, it would be better to use some general approach and parse HTML. You will be able to find some open-source parsers, for example: http://www.majestic12.co.uk/projects/html_parser.php[^].

It would be the best if HTML was well-formed XML which you could easily parse with any of the XML parsers which come with .NET FCL, but, unfortunately, this is not always the case.

—SA