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Editorial Team
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Asked: 2026-05-22T02:42:02+00:00

I have this string: This is sample <p id=short> the value of short </p>

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I have this string:

This is sample <p id="short"> the value of short </p> <p id="medium"> the value of medium </p> <p id="large"> the value of large</p>

which I want to break into 3 pieces:

  • string before p tags : this is sample
  • short : the value of short
  • medium: the value of medium
  • large: the value of large
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1 Answer

  1. Editorial Team

    If you don’t mind a non-regex solution (because HTML is not a regular language) you can use this

    string input = @"This is sample <p id=""short""> the value of short </p> <p id=""medium""> the value of medium </p> <p id=""large""> the value of large</p>";


string before = input.Substring(0, input.IndexOf("<"));
string xmlWrapper = "<html>" + input.Substring(input.IndexOf("<")) + "</html>";
XElement xElement = XElement.Parse(xmlWrapper);

var shortElement =
    xElement.Elements().Where(p => p.Name == "p" && p.Attribute("id").Value == "short").SingleOrDefault();
var shortValue = shortElement != null ? shortElement.Value : string.Empty;

var mediumElement =
    xElement.Elements().Where(p => p.Name == "p" && p.Attribute("id").Value == "medium").SingleOrDefault();
var mediumValue = shortElement != null ? shortElement.Value : string.Empty;

var largelement =
    xElement.Elements().Where(p => p.Name == "p" && p.Attribute("id").Value == "large").SingleOrDefault();
var largeValue = shortElement != null ? shortElement.Value : string.Empty;
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