Regular Expression - having issues with empty string

[burnproof21]

Hi, I have a textbox where I want the user to be able to enter either:

(1). Nothing
(2). up to 3 digits, optional decimal, up to 2 decimals.

I've been using ^\d{0,3}(\.\d{0 ,2})?$ but it's not allowing the empty string.

Thanks for any help!

[Rabbit]

That expression works fine for me. What does the code look like?

[burnproof21]

asp.net...

<...ID="PercentageValidate" Display="Dynamic" ForeColor="Red" runat="server" ControlToValidate="Percentage" ValidationExpression="^\d{0,3}(\.\d{0,2})?$" ErrorMessage="Error!" />

[burnproof21]

Even using ^(\d{0,3}) gives me issues with an empty textbox

[Rabbit]

It may have to do with asp.net's specific implementation. But try checking that it's actually a blank string in the control and not a null.

[zacksoniar]

^(?!\s*$).+ try putting this