Infopath Regex for 7 - 15 characters with atleast one digit and character

Question

I am trying to create a textbox in infoth form with following creteria: 1.) Length should be 7-15 characters 2.) It should contain at least one digit 3.) It should contain at least one character 4.) It should contain only digits and alphabets

[a-zA-Z1-9 ]{7,15} give seven to 15 characters alphanumeric but does not confirm that at one digit and alphabet.

I tried to add some like ^\d*[a-zA-Z][a-zA-Z0-9]*$ but no luck.

Than i trid to add "[a-zA-Z1-9 ]{7,15}" and "/d" in or condition but still not working.

Could someone please help me with this.

Answer 1

Due to the limited support for RegEx in InfoPath you'll not be able to do the verification in a single RegEx but you can do it by adding this validation rule:

FieldName | does not math pattern | [a-zA-Z\d]{7,15} | or
FieldName | does not math pattern | .*\d.*           | or
FieldName | does not math pattern | .*[a-zA-Z].*     | 

If InfoPath had had full support for RegEx including lookaheads then the regex could have been ^(?=.*\d)(?=.*[a-zA-Z])[a-zA-Z\d]{7,15}$, but even then the above is probably a little easier for many to understand

Answer 2

I always struggle with regex its the language of freaks! I tend to use an online testbed, I've found debuggex to be excellent.