Extension method for validating URL'scheck if string could be a valid web address using regular expressions more Extension method for validating numberscheck if string could be a number using regular expressions more Extension method for validating image filescheck for jpeg/gif/png file extension using regular expressions more Extension method for validating email addressesCheck if a string is properly formed using regular expression and so might be a valid email address more Extension method for validating audio filesTest a filename could be an audio file supported by the HTML5 audio player using regular expressions more Count the number of words in a stringExtension method to get a word count more |