CODEWITHSUNDEEP
c#regexvalidation
Neeraj
Neeraj

Reputation: 1

regular expression for decimal issue

I used decimal regular expression \d{1,5}([.]\d{1,2})?|[.]\d{1,2}.

It works fine in normal scenario. But when I type value like 55.123 and remove 123 with back space and just leave value as 55. it shows a validation/error message.

I want to restrict to show message in this case (I mean want to have my validation message not to appear for "55." as this is valid value for me )

Upvotes: 0

Views: 100

Answers (1)

ΩmegaMan
ΩmegaMan

Reputation: 31596

Use this pattern

\d+\.?\d*

which says

  • \d+ that atleast 1 digit preceding is needed but more could follow.
  • \.? with an optional period.
  • \d* followed by 0 or more digits.

If the pattern needs to not have any possible whitespace, enclose it with the beginning of line/end of line anchors such as

^\d+\.?\d*$

Upvotes: 1

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