RegularExpressionValidator - Numeric 13 characters

New-ish to regular expressions and this is driving me nuts.  I've got a RegularExpressionValidator and I need the input to be a number at least 13 characters long.  I'm sure this is a snap but I cannot get it right.

TIA,

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stretch73Asked:
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prairiedogConnect With a Mentor Commented:
Your error message says "A billing account number must be 13 digits, numeric, and is required to add a customer.". It does not match your original requirements: at least 13...
My first solution matches numbers with exactly 13 digits, and the modified solution matches numbers with at least 13 digits.
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fanopoeConnect With a Mentor Commented:
this should get you started:

"\d{13}"

see below usage


hth
<asp:TextBox ID="txtTest" runat="server"></asp:TextBox>
<asp:RegularExpressionValidator ID="rev01" runat="server" ControlToValidate="txtTest" Text="Error" ValidationExpression="\d{13}">

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prairiedogCommented:
Will this do?
^[1-9]\d{12}$
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Daniel WilsonCommented:
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prairiedogCommented:
@fanopoe:
\d{13} will take "0000000000000", or "0100000000000", etc,  as valid numbers,
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stretch73Author Commented:
This did not work:

<asp:RegularExpressionValidator ID="rfvBillingAccountNumber"
                                    ControlToValidate="txtBillingAccountNumber"
                                    ValidationExpression="^[1-9]\d{12}$"
                                    ErrorMessage="A billing account number must be 13 digits, numeric, and is required to add a customer."
                                    Display="dynamic"
                                    runat="server"/>
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stretch73Author Commented:
Thank you for the suggestions, but will these also validate against no input either?
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prairiedogCommented:
After reviewed the original question, I changed my expression to this:
^[1-9]\d{12,}$  ''<== Added a comma to meet the requirement: at least 13 characters long
Note: [1-9] will ensure that numbers with leading 0 are not allowed.
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prairiedogCommented:
You will need a RequiredFieldValidator again no input value.
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stretch73Author Commented:
Thanks PD and fanopoe, exactly what I needed.

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