Check for special non printable character in a field
Author: firstname.lastname@example.org (lalitpct)
I would like to put a check to allow only characters in a field , blocking special character (non printable which at times corrupts database). 1)Is there way to do using syntax. 2)Below thing doesnt seems to work, as it is unable to identify non printable charactres. if (@$fieldname != '@*') message/error "Only alphanumeric characters are allowed in password" dum_new ="" return(-1) endif 3)Is there way to show them on screen. In syntax I see characters allowed -'ASCII' will this ensure to have only alphanumerics in the field. Also how to test these??