Regular expression for indian landline validation

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I need to validate india landline numbers.
maximum length of indian landline number is 11.
it will starts with std code after that 6-8 digits.
like this.

044-444444
044-44444444
04175-22222

but it wont exceeds 11

i have given validation like this

"^[0-9]\d{2,4}-\d{6,8}$"

the above regular expression is accepting more than 11 digits..
in the above regex i need to give maximum length.

how to do that?

Posted 8-Jul-14 0:12am

priya dharshan

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Er. Puneet Goel · Answer 1 · 2014-07-08T00:26:00

Solution 1

Solution:
Check this Link Phone number validation

Let me know if still found it hard.

Posted 8-Jul-14 0:26am

Er. Puneet Goel

kedar001 · Answer 2 · 2014-07-08T00:30:00

you can use

XML

<asp:TextBox ID="tbTelephoneNo" runat="server"></asp:TextBox>
       <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="tbTelephoneNo" ValidationExpression="^\d{5,8}$" ErrorMessage="Error"></asp:RegularExpressionValidator>

George Jonsson · Answer 3 · 2014-07-08T00:38:00

You can try this regex using lookahead. Lookahead doesn't consume any characters from the input, it just does a check.

First the length including '-' is checked. In this case I set it to max 12 characters.
If the length is ok, then the next expression is tested otherwise it fails.

^(?(?=^[\d\-]{0,12}$)[0-9]\d{2,4}-\d{6,8})$

I hope it helps.

Have a look here for more info.

If-Then-Else Conditionals in Regular Expressions[^]

Awadhendra Tripathi · Answer 4 · 2014-07-08T00:57:00

Solution 4

Try this
[0-9]{3}[-][0-9]{6,8}

Posted 8-Jul-14 0:57am

Awadhendra Tripathi

Regular expression for indian landline validation

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