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Editorial Team
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Asked: 2026-05-26T00:06:38+00:00

When I put [Required] attribute on my ViewModel’s property MVC3 automatically generate error messages

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When I put [Required] attribute on my ViewModel’s property MVC3 automatically generate error messages like:
The Price field is required.

My site’s single language is Russian, so I want to have localized error messages. I can localize field’s name with [Display(Name = "blablabla")], but how can I localize the field is required part?

Update:
I know, that I can change an error message for concrete field by specifying it [Required(ErrorMessage = "blablabla")], is there a way I can change it in one place for all [Required] attributes, so I could use just [Required] without additional parameters, and it took the localized error message from some ressource/config/etc?

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1 Answer

  1. Editorial Team

    I’ve created an alternative solution where you don’t have to use the attributes for the localization. I’ve created custom model/validation meta data providers.

    All you need to do is to download my code and do the following in your global.asax:

    var stringProvider = new ResourceStringProvider(Resources.LocalizedStrings.ResourceManager);
ModelMetadataProviders.Current = new LocalizedModelMetadataProvider(stringProvider);
ModelValidatorProviders.Providers.Clear();
ModelValidatorProviders.Providers.Add(new LocalizedModelValidatorProvider(stringProvider));

    (the ResourceStringProvider is my default implementation but it’s easy to create an alternative that reads from XML files or a database)

    You can read about it here:
    http://blog.gauffin.org/2011/09/easy-model-and-validation-localization-in-asp-net-mvc3/

    I’m going to release a nuget package as soon as I’m finished with my view localization and my alternative HTML helpers.

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