Convert uris to links in html page

Question

Hi,

I have a very simple/basic html which has some uris inside, like this:

<p>some text http://www.msn.com the rest</p>

Need to convert the uris to links like this:

http://www.msn.com/abc

to:

<a href="http://www.msn.com/abc">http://www.msn.com/abc</a>

Any embedded .NET Framework 4.0 method to do so? Thanks :)

• Better not to be regex as might fail on rare conditions for some link formats

Answer 1

@S-Soft, Welcome to Microsoft Q&A, there are two methods you could refer to to convert the url like what you wanted.

First, you could created a winform app and drag the webbrowser control to the form.

Then, you could try the following code to do it.

 private void Form1_Load(object sender, EventArgs e)
        {
            webBrowser1.Url = new Uri("1.html");
        }

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Url = null;
            WebClient web = new WebClient();
            string htmlstr = web.DownloadString("1.html");
            foreach (HtmlElement item in webBrowser1.Document.All)
            {
                if(item.TagName=="P")
                {
                    string result = item.InnerText.Split(' ').Where(i => i.StartsWith("http") && i.Contains("www")).FirstOrDefault();
                    string str = string.Format("<a href=\"{0}\">{0}</a>", result);
                    htmlstr = htmlstr.Replace(result, str);
                }
            }
            File.WriteAllText("1.html", htmlstr);
          
            webBrowser1.Url = new Uri("1.html");


        }

Second, you could try to install the nuget package HtmlAgilityPack to do it.

        static void Main(string[] args)
        {
            WebClient web = new WebClient();
            string htmlstr = web.DownloadString("1.html");
            var doc = new HtmlDocument();
            doc.LoadHtml(htmlstr);
            foreach (var item in doc.DocumentNode.DescendantNodes())
            {
                if(item.Name=="p")
                {
                    string result = item.InnerText.Split(' ').Where(i=>i.StartsWith("http")&&i.Contains("www")).FirstOrDefault();
                    string str = string.Format("<a href=\"{0}\">{0}</a>", result);
                    htmlstr=htmlstr.Replace(result, str);
               
                
                }
             
            }
            File.WriteAllText("1.html", htmlstr);
        }

Result:

Hope my solution could help you.

Best Regards,

Jack

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