Why can't I use resources as ErrorMessage with DataAnnotations? C# ASP.NET MVC2
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Published on 2010-04-22T07:17:58Z
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2010/04/22
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Why can't I do like this?
[Required(ErrorMessage = "*")]
[RegularExpression("^[a-zA-Z0-9_]*$", ErrorMessage = Resources.RegistrationModel.UsernameError)]
public string Username { get; set; }
What is the error message telling me?
An attribute argument must be a constant expression , typeof expression or array creation expression of an attribute parameter type.
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