C# – How localize ErrorMessage in DataAnnotation

asp.netasp.net-mvcasp.net-mvc-5c

Using MVC 5 I need to localize an ErrorMessage for a DataAnnotation attributes.
I receive the following error

ERROR

An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type

In model

[Compare("Password", ErrorMessage = Resources.Account_Register_ConfirmPasswordErrorMessage)]
public string ConfirmPassword { get; set; }

Any idea how to fix it?

Best Answer

You need to use ErrorMessageResourceName and ErrorMessageResourceType properties.

For example like this:

[Compare("Password", ErrorMessageResourceName = "ConfirmPasswordErrorMessage",
  ErrorMessageResourceType=typeof(<<type_of_your_resoruce_class>>)]
public string ConfirmPassword { get; set; }

Hope this helps!

Regards, Uros

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