Problem in regex validation to match Arabic with English text

Question

Greeting

I search long time and test many formula to validate Arabic character.

Sinario:

I have a form conatin a Text box (title) and another text box field (description)

I desigened a form to allow user to write in both languages (Arabic or English ) or in some time a paragraph conatining both of last langages.

 

first time I used this formula for my propose:

 

^[\u0600-\u065F\u066A-\u06EF\u06FA-\u06FFa-zA-Z]+[\u0600-\u065F\u066A-\u06EF\u06FA-\u06FFa-zA-Z-_]*$

 

Arabic letters & English letters only regular expression No Numbers ? | The ASP.NET Forums 

 

 But last fomulat not work correctly.

I moved to another formula like this

 

^[\u0600-\u065F\u066A-\u06EF\u06FA-\u06FFa-zA-Z\s\w*]

 and problem still as it.

what anyone have an idea to describe what hapening?

 

thanks