Check all css on a web page in asp using c#

Question

I want to show list and want to count numbers of css files for a specific url. Here is my code:

    var document = new HtmlDocument();
    document.LoadHtml(firsturlpagesource);
    var cssTags = document.DocumentNode.SelectNodes("//link");
    if (cssTags != null)
    {
        urlcsscountlbl.Text = ""; //numbers of css
        urlcssdetailslbl.Text = ""; // url of css files
        foreach (var sitetag in cssTags)
        {
            if (sitetag.Attributes["href"] != null && sitetag.Attributes["href"].Value.Contains(".css"))
            {
                firsturlcssdetailslbl.Text += sitetag.Attributes["href"].Value + "<br />";
                int countcss = sitetag.Attributes["href"].Value.Count();
                firsturlcsscountlbl.Text = countcss.ToString();
            }
        }
    }

Output i got:

Total Css Files:48


  /assets/css/bootstrap.min.css
/assets/css/font-awesome.min.css
/assets/fonts/line-icons/line-icons.css
/assets/css/main.css
/assets/extras/settings.css

As you can see there are only 5 css files but total function returns 48. Can anyone help me to to solve this problem? Thanks in advance. Sorry for my bad English.

Answer 1

The problem is in this line

sitetag.Attributes["href"].Value.Count();

Here you are calling Count LINQ extension method on the value of the href attribute which equals the length of the link itself (counts the characters). Instead you should just count the number of actual .css <Link> elements in the cssTags collection:

    var document = new HtmlDocument();
    document.LoadHtml(firsturlpagesource);
    var cssTags = document.DocumentNode.SelectNodes("//link");
    if (cssTags != null)
    {
        urlcsscountlbl.Text = ""; //numbers of css
        urlcssdetailslbl.Text = ""; // url of css files
        int count = 0;
        foreach (var sitetag in cssTags)
        {
            if (sitetag.Attributes["href"] != null && sitetag.Attributes["href"].Value.Contains(".css"))
            {
                count++;
                firsturlcssdetailslbl.Text += sitetag.Attributes["href"].Value + "<br />";                
            }
        }
        urlcsscountlbl.Text = count.ToString();
    }