Regular Expression

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I need a regular expression that should allow only digits and "-" the condition is that the "-" should not come at the first and last position, the "-" should have digit in both sides.

Posted 14-Nov-10 20:14pm

MathewPV

Updated 15-Nov-10 9:18am

Toli Cuturicu

v2

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Toli Cuturicu 15-Nov-10 15:15pm

Are there many - allowed? (1234-5678-9012 is ok?)

3 solutions

Solution 3

Depending on your meaning...

^(?!-)[-0-9]+(?<!-)$

Or...

^[0-9]+(-[0-9]+)*$

Or...

^((?!--|^-|-$)[-0-9])+$

Posted 15-Nov-10 9:26am

AspDotNetDev

Updated 15-Nov-10 9:36am

v3

Solution 1

http://www.regular-expressions.info/reference.html[^]

[0-9]-[0-9]

Posted 14-Nov-10 20:17pm

Abdul Quader Mamun

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Toli Cuturicu · Accepted Answer · 2010-11-15T09:17:00

Solution 2

Perhaps regexPattern = @"^\d+(-\d+)*$"; will do a better job...

Posted 15-Nov-10 9:17am

Toli Cuturicu

Updated 23-Nov-10 3:39am

v2

Comments

MathewPV 22-Nov-10 23:02pm

still accepting "-" at the last

Toli Cuturicu 23-Nov-10 9:39am

Oh, sorry. Just a small correction! Look at the added underlined symbols!