Hello, I have question on Masking text field. I want to set the textfield t

Hello,
I have question on Masking text field. I want to set the textfield to accept only Alpha-Numeric characters(A-Z, a-z, 0-9). If I use the masking functionality and use 'a', it works good for small characters, but when I need it for a big character size upto 50 chars, it is taking a lot of time to validate the text. Is there any other way to implement it?
Right now we are using the Masking value of 'aaaaaaaaaaaaaaaaaaaaaaaaaaaa..' (50 a's)
Thanks,
Sunil...

OriginalPostID-106526

OriginalPostID-106526