Take the 2-minute tour ×  Do I need to use regex to ensure that
the user has typed in English? All characters are valid except
non English characters.  How do I validate this textbox?
share|improve this question "English characters" is an ambiguous
specification. Is "6" an "English character"? What about "é"?
(Before you say no, consider words like café, resumé, fiancé, et
cetera.) You're going to need to be more specific. –  John
Feminella Jan 17 '10 at 15:41 its duplicate question you can get
the answer here stackoverflow.com/questions/150033/… – 
GuruKulki Jan 17 '10 at 15:43 Not only what @John Feminella
already stated but also all the punctuation characters. Is such
a symbol as "™" to be considered part of the English characters?
–  Miguel Ventura Jan 17 '10 at 15:44 @John - For the purpose of
validating this textbox, yes 6 is an English character. @Miguel
- Yes TM is a valid character as well. –  Nick Jan 17 '10 at
16:25 add comment  3 Answers  A regex would work quite well for
this. Something like  ^[