Highlighting Search Text (Pageflakes Community)

i recently used text highlighting in a project( pageflakes community - under development), using the simplest, yet powerful class of .net called

System.Text.RegularExpressions.MatchEvaluator

Sometimes, you need to highlight the search key words ( ex.google), there are loads of methods available out there for doing so , but very simple yet power code block i have just pasted below.


private string HighLight(string inputText, string searchKey)
{
if (searchKey.Length > 0)
{
// Setup the regular expression and add the Or operator.
Regex RegExp = new Regex(searchKey.Replace(" ", "|").Trim(), RegexOptions.IgnoreCase);
// Highlight keywords by calling the delegate each time a keyword is found.

return RegExp.Replace(inputText, new MatchEvaluator(ReplaceKeyWords));
}
return inputText;
}


public string ReplaceKeyWords(Match m)
{
return "" + m.Value + "";
}


/*CSS */
span.highlight
{
background-color : Yellow;
}



Use call this function with a search key and text to highlight and it will do the rest.


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