I have a string like this
orem ipsum dolor sit amet, consectetur adipiscing elit. Fusce rutrum, neque eu
varius placerat, <p class="how-pkg"> leo diam viverra velit, </p> a commodo
nibh metus nec orci. Nulla pharetra ut augue quis blandit.
I want to strip out a string value which is inside this <p class="how-pkg"> ------ </p>
Is there any way to accomplish this straight ahead?
without splitting the string multiple times.
Expected out put :leo diam viverra velit,
use html agility pack and write
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(yourText);
var text = doc.DocumentNode.SelectNodes("/p[@class='how-pkg']").InnerText;
doc is string in this case?
"/p[@class='how-pkg']" selector can be more appropriate if suddenly there will be other tagsUsing only string operations.
var searchForStart = "<p class=\"how-pkg\">";
int startIndex = input.IndexOf(searchForStart ) + searchFor.Length;
var searchForStop = "</p>";
int stopIndex = input.IndexIf(searchForStop, startIndex);
var output = text.Substring(startIndex, stopIndex - startIndex);
string s = "orem ipsum dolor sit amet, consectetur adipiscing elit. Fusce rutrum, neque eu varius placerat, <p class=\"how-pkg\"> leo diam viverra velit, </p> a commodo nibh metus nec orci. Nulla pharetra ut augue quis blandit.";
int start = s.IndexOf("<p class=\"how-pkg\">") + 20;
int end = s.IndexOf("</p>", start);
string result = s.Substring(start, end - start);
Assuming source is a your string:
var start = "<p class=\"how-pkg\">";
var p0 = source.IndexOf(start);
var p1 = source.IndexOf("</p>");
var s = source.Substring(p0 + start.Length, p1 - p0);
Something like that
<p class="how-pkg"> leo diam viverra velit,</p> somewhere before <p class=\"how-pkg\"> in the input.If your tag structure is always going to be the same then you can use regex to extract the value like this:
var result = Regex.Match("<p class="how-pkg">hello</p>", "(?<=<p class="how-pkg">).*(?=</p>)").Value;
If your tag structure will change then you can capture both tag and values with named groups like this:
<(?<tag>\.*)>(?<text>.*)</\k<tag>>
To capture just the value hello from <one>hello</one>:
(?<=<.*>).*(?=</\w*>)
eg.
var result = Regex.Match("<p class="how-pkg">hello</p>", "(?<=<.*>).*(?=</\w*>)").Value;
Simplest way:
<p (or <p class)> after that - you found a tag (disregards of specified class) and opening point</p> - you found result and the point where continue search (if necessary).