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Why is it when I specify against my ASP.NET MVC view model class the following definition:

     [StringLength(11)]
     [RegularExpression(@"‎^(09)[1-3][0-9]\d{7}$")]
     public string Mobile { get; set; }

this format is Mobile in Iran:

Start with: 09

A digit number between 1 and 3

7 digit between 0 and 9

But when I enter mobile number (for example 09124208640) ModelState isn't valid and get this error message :

The field Mobile must match the regular expression '‎^(09)[1-3][0-9]\\d{7}$'.
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4
  • According to regexpal.com with the regex ^(09)[1-3][0-9]\d{7}$ and input 09124208640 it's a match. Commented Aug 1, 2013 at 6:39
  • @ta.speot.is can help me for create correct regex Commented Aug 1, 2013 at 6:44
  • I test in regular-expressions.info/javascriptexample.html and input is match. Commented Aug 1, 2013 at 6:47
  • Well your rules Start with: 09 2 ... A digit number between 1 and 3 1 ... 7 digit between 0 and 9 7 is a string that's 10 characters long. Your regex asks something different, as does the StringLength(11) constraint. Commented Aug 1, 2013 at 6:48

2 Answers 2

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You have a typo:

"‎^(09)[1-3][0-9]\d{7]$"
                    ^

Replace ] with }.

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3 Comments

I think the [0-9] part of [0-9]\d is redundant, no? Replace it with \d{8}??
@ta.speot.is, I agree with you. But you'd better comment to OP's question because the regular expression come from OP's code.
I'm not a regex guru. I was hoping someone that was could incorporate my feedback :)
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From this answer, consider the following regex:

^09[1|3][0-9]{8}$

[1|3] matches 1, | or 3. This seems erroneous, leading us to:

^09[13][0-9]{8}$

From your comment, if you need to accept 2 in the third digit:

^09[1-3][0-9]{8}$
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10 Comments

tnx for help me,but this regex is't match and i have same error :(
[13] does not match 2. BTW, OP did not used [1|3].
@falsetru I know, I'm working off what Wikipedia says. Iranian mobile phone numbers don't have 2 as their third character.
@ta.speot.is, OP wants A digit number between 1 and 3.
Original Poster. This guy.
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