Regular expression for textbox - first char must be either + or - followed by numbers

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I need to validate a textbox field that should accept first char as + or - and followed by decimal value

Ex: +248.58 or -528.88

I did a validation ^([-+]+(\d{1,10})(\.\d{2,2})?)+$

but this is accepting +++248.58 or ------528.88

only first char must be + or - from second char it must accept only numbers. Please do help me.

What I have tried:

^([-+]+(\d{1,10})(\.\d{2,2})?)+$

Posted 24-Feb-16 20:59pm

Member 11261355

Updated 24-Feb-16 21:16pm

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OriginalGriff · Answer 1 · 2016-02-24T21:16:00

That's becasue you told it to!

[-+]+

is Regex for "a '-' or '+' character, at least one, but as many as wanted.
Take out the repitition indicator and it should work:

^([-+](\d{1,10})(\.\d{2,2})?)+$

If you are going to work with Regular Expressions, then get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.
[edit]I HATE MARKDOWN! Even when it's turned off, and inside a code block, it manages to muck up strings... :mad: [/edit]