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Regular expression to validate decimal values in c#

Posted on 2010-08-25
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Last Modified: 2016-09-08
I want a regular expression to validate decimal values.

it should allows 12 numerics values and 2 decimal values only.

it should not allow more than 12 decimal values and more than 2 decimal values.
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Question by:kravindra
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Expert Comment

by:Fernando Soto
ID: 33524414
Hi kravindra;

This regex pattern should do what you want.

String pattern = @"\d{1,12}\.\d\d";

Fernando
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Author Comment

by:kravindra
ID: 33524529
String pattern = @"\d{1,12}\.\d\d";

this expression is not accepting numbers.

I want a regular expression that should accept 12 numeric number and decimal point .
after decimal point it should accept 2 decimal only.

eg:123456789012.22
12.22
33.88
55555.88
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LVL 62

Expert Comment

by:Fernando Soto
ID: 33524689
Please post your code you are working with. I just tested the pattern and all the values you posted work for me.
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Author Comment

by:kravindra
ID: 33524839
^\$?[+-]?[\d,]*\.?\d{0,2}$

here problem  is it's accepting more than 2 character after decimal point.
 could you correct  it please?
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LVL 62

Accepted Solution

by:
Fernando Soto earned 500 total points
ID: 33525029
Try this one

^\$?[+-]?\d{1,12}\.\d{2}$
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LVL 62

Expert Comment

by:Fernando Soto
ID: 33532361
Did that work for you?
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Expert Comment

by:vishal kathar
ID: 41789101
Thank You for Regular expression to valid only decimal should be enter
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LVL 62

Expert Comment

by:Fernando Soto
ID: 41789285
Not a problem Vishal, glad I was able to help.
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