I am trying to remove script and link tags from a string. Below is what I got till now.
Code
rawHtml = rawHtml.Remove(rawHtml.IndexOf("<script"), (rawHtml.LastIndexOf("</script>") -
rawHtml.IndexOf("<script")) + 5);
rawHtml = rawHtml.Remove(rawHtml.IndexOf("<link"), (rawHtml.LastIndexOf("/>") -
rawHtml.IndexOf("<link")) + 3);
Is there better way without manually writing the numbers ?
This will remove all contents between script, link and style tags, then remove the html tags (but keep the content) from the rest.
NOTE: Following @yelliver improvement on my previous answer, have incorporated that (having upvoted) and addressed your point about links.
/// <summary>
/// Helper method to strip html tags from html
/// </summary>
/// <param name="htmlText">raw html</param>
/// <returns>string without html tags</returns>
public string StripHTML(string hTMLText)
{
// Remove script and style tags
Regex rRemScript = new Regex(@"<(script|style)[^>]*>[\s\S]*?</\1>");
hTMLText = rRemScript.Replace(hTMLText, "");
// Remove link tags AND CONTENTS
Regex rRemLink = new Regex(@"<link[\s\S]*?/>");
hTMLText = rRemLink.Replace(hTMLText, "");
// Strip other html tags (leaving contents)
Regex reg = new Regex("<[^>]+>", RegexOptions.IgnoreCase);
return reg.Replace(hTMLText, "");
}
Using backreferences, I improve @HockeyJ answer: Instead of:
Regex rRemScript = new Regex(@"<script[^>]*>[\s\S]*?</script>");
hTMLText = rRemScript.Replace(hTMLText, "");
// Remove link content
Regex rRemLink = new Regex(@"<link[^>]*>[\s\S]*?</link>");
hTMLText = rRemLink.Replace(hTMLText, "");
// Remove style content
Regex rRemStyle = new Regex(@"<style[^>]*>[\s\S]*?</style>");
hTMLText = rRemStyle.Replace(hTMLText, "");
Just use:
Regex rRemScript = new Regex(@"<(script|link|style)[^>]*>[\s\S]*?</\1>");
hTMLText = rRemScript.Replace(hTMLText, "");