c# - Regex for Hebrew, English, Symbols -

as part of small program i'm writing need filter string input might "gibrish" (any sign in utf8) input can hebrew and/or english have normal signs : ?%$!@'_' , on...

a friend suggested use regex, due inexperience using come advice.

how can create c# function check input text , if it's not "right" return false

my try far is:

public static bool shorttest(string input)     {         string pattern = @"^[אבגדהוזחטיכלמנסעפצקרשתץףןםa-za-z0-9\_]+$";         regex regex = new regex(pattern);         return regex.ismatch(input);     } 

all chars after "[" , "a" hebrew

for hebrew letters, in c# can somthing that:

return system.text.regularexpressions.regex.ismatch(value, @"^[א-ת]+$"); 

enjoy =)