using Regular Expression Validator for numeric values

Hi All,


I am using ASP.Net 3.0 with C#. in my application i have to validate the Zipcode using Regular expression validator.
The format will be 5 digits number-any no.of digits
for first 5 digits number  i took the expression as \d{5}
for - (dash)  i took the expression as    \-
but i don't know how to take validation for any no of digits



Any help would be appreciated.


Thanks In Advance
Radha.

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