Asp.Net MVC 2 - 更改PropertyValueRequired字符串

Question

使用App_GlobalResources目录中的resx文件,我已经能够更改模型验证器的PropertyValueInvalid字符串的默认消息.

但是当需要值时,它无法转换消息(PropertyValueRequired.)

在Global.asax.cs Application_Start()中,我更改了资源类键,如下所示:

DefaultModelBinder.ResourceClassKey = "Messages";

在Messages.resx文件中,我放了两个条目:

• "PropertyValueInvalid"=>"O valor'{0}'éinválidoparao campo {1}."
• "PropertyValueRequired"=>"Éadmandáriigiditaro {0}."

谢谢.

Answer 1

RequiredAttribute未使用DefaultModelBinder.GetValueRequiredResource.创建自定义DataAnnotationsModelValidator类.

public class MyRequiredAttributeAdapter : RequiredAttributeAdapter
{
  public MyRequiredAttributeAdapter(ModelMetadata metadata, 
                                    ControllerContext context, 
                                    RequiredAttribute attribute) 
         : base(metadata, context, attribute)
  {
    attribute.ErrorMessageResourceType = typeof (Messages);
    attribute.ErrorMessageResourceName = "PropertyValueRequired";
  }
}

并在Global.asax中注册适配器.

DataAnnotationsModelValidatorProvider.RegisterAdapter(
    typeof(RequiredAttribute), 
    typeof(MyRequiredAttributeAdapter));

希望这有帮助!

DataAnnotations的可重用验证错误消息资源字符串

Answer 2

此消息将被绑定到System.ComponentModel.DataAnnotations密钥下的程序集中RequiredAttribute_ValidationError.您可以编写自定义验证属性:

public class MyRequiredAttribute : RequiredAttribute
{
    public MyRequiredAttribute()
    {
        ErrorMessageResourceType = typeof(Messages);
        ErrorMessageResourceName = "Required";
    }
}

然后在你的Messages.resx文件中定义Required字符串:

Required => É necessário digitar o {0}.

最后用这个自定义属性装饰你的视图模型属性:

public class MyViewModel
{
    [MyRequired]
    public int Foo { get; set; }
}