Regular Expression for decimal values

Question

5.00/5 (1 vote)

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Can anyone explain why this code is not working.

I use two decimal digits.

54.57
123.43
0.34

C#

string sal = txtSalary.Text;

Regex regexSal = new Regex(@"/^\d{1,9}(?:\.\d{0,2})?$/");

Match matchSal = regexSal.Match(sal);

Why its not matching

Posted 27-Jun-14 0:38am

KUMAR619

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4 solutions

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Pravuprasad · Accepted Answer · 2014-06-27T00:43:00

Solution 1

^\d{1,4}(\.\d{1,2})?$
it's the regex for 2 decimal.

Posted 27-Jun-14 0:43am

Pravuprasad

OriginalGriff · Accepted Answer · 2014-06-27T00:48:00

Solution 2

Take out the leading and trailing slashes:
Regex regexSal = new Regex(@"^\d{1,9}(?:\.\d{0,2})?$");

Posted 27-Jun-14 0:48am

OriginalGriff

Comments

KUMAR619 27-Jun-14 7:27am

Well Said.
Thank you Sir

Peter Leow · Accepted Answer · 2014-06-27T00:54:00

Solution 3

Start with 1 to 9 digits:

^\d{1,9}

followed by a .

\.

then
end with 2 decimals compulsory:

\d{2}$

putting them together:

^\d{1,9}\.\d{2}$

in C#, it becomes:

@"^\d{1,9}\.\d{2}$"

Posted 27-Jun-14 0:54am

Peter Leow

Updated 27-Jun-14 0:56am

v2

Yogesh Kumar Tyagi · Accepted Answer · 2014-06-27T01:03:00

Solution 4

use this Expression

^\d{1,9}(?:\.\d{0,2})?$

Posted 27-Jun-14 1:03am

Yogesh Kumar Tyagi