RegExp to highlight word in html
return Regex.Replace(str, @"(<([A-Za-z]+)[^>]*[\>]*)*(" + Parameters.KeyWords + @")\b(.*?)(<\/\\2>)*", string.Format("$1<b style=\"background-color:#ff0;{0}\">$3</b>$4$5", fontweight), RegexOptions.IgnoreCase);return Regex.Replace(str, @"(<([A-Za-z]+)[^>]*[\>]*)*(" + Parameters.KeyWords + @")\b(.*?)(<\/\\2>)*", string.Format("$1<b style=\"background-color:#ff0;{0}\">$3</b>$4$5", fontweight), RegexOptions.IgnoreCase);