How to localize standard error messages of validation attributes in ASP.NET Core

问题

How to localize standard error messages of validation attributes in ASP.NET Core (v2.2)? For Example, [Required] attribute has this error message "The xxx field is required."; [EmailAddress] has "The xxx field is not a valid e-mail address."; [Compare] has "'xxx' and 'yyy' do not match." and so on. In our project we use not English language and I want to find a way how to translate standard error messages without writing them directly in every attribute of every data-model class

回答1:

This is spelled out in the docs. You can do either:

1. Use the ResourcePath option on the attribute.

   [Required(ResourcePath = "Resources")]
   

   Then, you'd add the localized message to Resources/Namespace.To.MyClass.[lang].resx.

2. Use one resource file for all classes:

   public void ConfigureServices(IServiceCollection services)
   {
       services.AddMvc()
           .AddDataAnnotationsLocalization(options => {
               options.DataAnnotationLocalizerProvider = (type, factory) =>
                   factory.Create(typeof(SharedResource));
           });
   }
   

来源：https://stackoverflow.com/questions/59284038/how-to-localize-standard-error-messages-of-validation-attributes-in-asp-net-core