MVC 多语言记录1 设置默认的ResourceType

http://stackoverflow.com/questions/3260748/default-resource-for-data-annotations-in-asp-net-mvc

Add this class somewhere in your project:

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public class ExternalResourceDataAnnotationsValidator : DataAnnotationsModelValidator<ValidationAttribute> {     /// <summary>     /// The type of the resource which holds the error messqages     /// </summary>     public static Type ResourceType { get; set; }       /// <summary>     /// Function to get the ErrorMessageResourceName from the Attribute     /// </summary>     public static Func<ValidationAttribute, string> ResourceNameFunc     {         get { return _resourceNameFunc; }         set { _resourceNameFunc = value; }     }     private static Func<ValidationAttribute, string> _resourceNameFunc = attr => attr.GetType().Name;       public ExternalResourceDataAnnotationsValidator(ModelMetadata metadata, ControllerContext context, ValidationAttribute attribute)         : base(metadata, context, attribute)     {         if (Attribute.ErrorMessageResourceType == null)         {             this.Attribute.ErrorMessageResourceType = ResourceType;         }           if (Attribute.ErrorMessageResourceName == null)         {             this.Attribute.ErrorMessageResourceName = ResourceNameFunc(this.Attribute);         }     } }

 and in your global.asax, add the following:

 

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// Add once ExternalResourceDataAnnotationsValidator.ResourceType = typeof(CustomDataAnnotationsResources);   // Add one line for every attribute you want their ErrorMessageResourceType replaced. DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(RangeAttribute), typeof(ExternalResourceDataAnnotationsValidator));

 

 

It will look for a property with the same name as the validator type for the error message. You can change that via the ResourceNameFunc property.

EDIT: AFAIK this works from MVC2 onwards, as DataAnnotationsModelValidatorProvider was introduced in MVC2.

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To achieve this, I created a new class that inherits from RequiredAttribute, and the error message is embedded inside this new class:

The error message is taken from the ValidationResource.resx file, where I list the error message as follows:

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public class RequiredWithMessageAttribute : RequiredAttribute {     public RequiredWithMessageAttribute()     {         ErrorMessageResourceType = typeof(ValidationResource);         ErrorMessageResourceName = "RequiredErrorMessage";     } }

 

RequiredErrorMessage --> "{0} is required."

where {0} = display name.

I then annotate my models like this, so I never have to repeat my error message declarations:

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1 2	[RequiredWithMessage] public string Name { get; set; }

 

Once you do this, an error message ("Name is required.") will appear whenever validation fails.

This works properly with ASP.NET MVC's server-side validation and client-side validation.