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Using [RegularExpression(@"^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$")] attribute never validates an email property of my model. I'm new to regular expressions so I can't figure out what is the problem. Little help?

Rade Milovic
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  • Could you provide an input that should match the regex? Are the emails *contained* in strings? For example, either `x@x.x` or `text before x@x.x text after`? – sp00m Mar 25 '13 at 11:06
  • For example johndoe@gmail.com or john.doe@gmail.com should pass. – Rade Milovic Mar 26 '13 at 14:34
  • [MVC Email Regular Expression C#](http://lesson8.blogspot.com/2013/03/email-regular-expression-mvc-c.html) – Sender Oct 03 '13 at 16:59

2 Answers2

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[Required]
[Display(Name = "Email Address")]
[EmailAddress]
public string email { get; set; }

Something like this should solve you problem. The email validation has been build in 4.5 check out this msdn documentation

Just another Steve
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    This approach doesn't work with older browsers (which doesn't support input type of email). So you should provide RegularExpression attribute as a fallback. – Rade Milovic Jul 29 '13 at 16:36
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Did you check the ModelState property for validation errors? Look at the example at the bottom of this page:

http://blogs.msdn.com/b/youssefm/archive/2012/06/28/error-handling-in-asp-net-webapi.aspx

for a way of sending back error messages to the client when validation fails.

Youssef Moussaoui
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  • Yes I have done that part. The problem is that email is never validated, even when it's in a correct form. This regex should validate johndoe@gmail.com, but it doesn't. – Rade Milovic Mar 25 '13 at 10:57
  • I can't reproduce your issue. If I try to send johndoe, I get "The field Email must match the regular expression '^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}$'." as a model state error. So it looks like it's validating just fine. – Youssef Moussaoui Mar 25 '13 at 12:28