Possible Duplicate:
How to use HTML Agility pack
I have html code below:
<div><span class="help">This is text.</span>Hello, this is text.</div> <div>I have a question.<span class="help">Hi</span></div> Now, I want to remove text which is between <span class="help"></span> using C#. So, I want to leave only
<div>Hello, this is text.</div> <div>I have a question.</div> Anyone has any idea?
You should use Html Agility Pack to work with html.
string text = @"<div><span class=""help"">This is text.</span>Hello, this is text. </div> <div>I have a question.<span class=""help"">Hi</span></div>"; HtmlDocument doc = new HtmlDocument(); doc.LoadHtml(text); var nodes = doc.DocumentNode.SelectNodes("//span[@class='help']"); foreach( HtmlNode node in nodes) { node.Remove(); } String result = doc.DocumentNode.InnerHtml; 
I have the idea to use Html Agility Pack to parse html.
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument(); doc.LoadHtml(html); // this is your string var divs = doc.DocumentNode.Elements("div") .Select(div => string.Format("<div>{0}</div>", div.LastChild.InnerText)); you can use regex
string val = @"<div><span class=""help"">This is text.</span>Hello, this is text.</div><div>I have a question.<span class=""help"">Hi</span></div>"; Regex reg = new Regex("<span .+?</span>", RegexOptions.IgnoreCase | RegexOptions.Singleline); string ret = reg.Replace(val, ""); Debug.WriteLine(ret); 
get the elements to contain the runat="server" so they can be accessed from the codebehind and then when it is suitable try getting the element by its id name and do either element.innerHTML = ""; or element.innerText = "";
