How restrict TextArea that it only contain stirngs

[Basit781]

Hi,
Hope you all are fine. Can any one tell me if i want that my TextArea contain only string then how can i do it. Means if user type only alphabets then letters types in text area but if user try to enter any thing other than alphabets then it shouldn't type in the textarea. I saw the constraint but i didn't see any constraint regarding string. There are NUMERIC, ANY but no one like STRING.

Thanks

[r035198x]

Careful about what you are looking for here because you will most likely cripple your application. Which alphabets are you talking about? What does the text box represent?

[Basit781]

Hi :),
Thanks. It contains only text message. Contains only alphabets A-Z or a-z. But no numeric value. It cantains fullstop(.), comma(,), etc but no numeric value.

Thanks.

[PhHein]

Use a DocumentFilter.