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Old August 8th, 2003, 12:26 PM
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Default .NET Regular Expressions

I'm having two little problems with my first attempt at regular expressions - I would like the following to determine whether user input is a certain type of numeric: 7 digits possibly followed by a decimal point and possibly 2 post decimal digits:

1. How do I specify that the 2 digits after the decimal are only appropriate if there indeed is a decimal? Currently, it allows a 9-digit number without a decimal.
2. Can I substitute variables for the 7 and 2? I tried and can't make it work - are there some special delimiters used to surround variables? e.g., I want to do something like:

Dave Doknjas

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Old August 8th, 2003, 05:48 PM
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try the following :


This will allow either a 7 digit number or a 7 digit number, decimal point, and then 2 digits.
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Old August 8th, 2003, 07:10 PM
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Thanks Greg!
I made a slight change to get it to work:

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