[2.0] regex question

How would you go about doing this using regex :

I want to validate "Age" field which complies to these rules:
1.doesn't accept "zero" at the beginning.
2.doesn't excced 3 digits.
3.accept 2 or 3 digits.

examples of valid ages: 20 , 38,102

Sorry , can't construct this little regex string

Thank u for any help !

Try this

Code:

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^[1-9][0-9]{0,2}$

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Quote:

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Originally Posted by wild_bill

Try this

Code:

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^[1-9][0-9]{0,2}$

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I tested in Expresso,returned no results!so it's not working

WildBill's regex would work if you enclose it in paranthesis:
^([1-9][0-9]{0,2})$

However, it also creates a grouping on the last digit.

Try this:
^([1-9][0-9][0-9]*)*

Quote:

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Originally Posted by nemaroller

WildBill's regex would work if you enclose it in paranthesis:
^([1-9][0-9]{0,2})$

However, it also creates a grouping on the last digit.

Try this:
^([1-9][0-9][0-9]*)*

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same result..no matching

How do you mean no matches?

I get many matches.

Try the same regex in Regex lib:

http://regexlib.com/RETester.aspx

I tested it with vb.net, and it worked.

Code:

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Dim rx As New Regex("^[1-9][0-9]{0,2}$")
Console.WriteLine(rx.IsMatch("20"))
Console.WriteLine(rx.IsMatch("38"))
Console.WriteLine(rx.IsMatch("102"))
Console.WriteLine(rx.IsMatch("3"))
Console.WriteLine(rx.IsMatch("1022"))
Console.WriteLine(rx.IsMatch("03"))

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Sorry,multiline was disabled in Expresso..all regex are working

Thanks all

You might consider modifying so no values > 199 are allowed.

He could have meant age as in the number of days of an outstanding invoice.

He never clarified that though.

I will consider that next time;)