blocks|key|3247512|text|为此，我创建了一个继承自RequiredAttribute的新类，并将错误消息嵌入到这个新类中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3247513|public+class+RequiredWithMessageAttribute+:+RequiredAttribute
{
++++public+RequiredWithMessageAttribute()
++++{
++++++++ErrorMessageResourceType+=+typeof(ValidationResource);
++++++++ErrorMessageResourceName+=+"RequiredErrorMessage";
++++}
}|code-block|syntax|javascript|3247514|错误消息取自ValidationResource.resx文件，我在其中列出了错误消息，如下所示：|3247515|RequiredErrorMessage+-->+"{0}是必需的。“|3247516|其中{0}+=显示名称。|3247517|然后我像这样注释我的模型，所以我永远不需要重复我的错误消息声明：|3247518|[RequiredWithMessage]
public+string+Name+{+get;+set;+}|3247519|执行此操作后，会出现一条错误消息("Name+is+requied.“)将在验证失败时出现。|3247520|这可以与ASP.NET+MVC的服务器端验证和客户端验证一起正常工作。|3247521|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

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

<pre><code>public class RequiredWithMessageAttribute : RequiredAttribute
{
 public RequiredWithMessageAttribute()
 {
 ErrorMessageResourceType = typeof(ValidationResource);
 ErrorMessageResourceName = "RequiredErrorMessage";
 }
}
</code></pre>

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

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:

<pre><code>[RequiredWithMessage]
public string Name { get; set; }
</code></pre>

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.

blocks|key|3247538|text|您可以尝试这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3247539|将此类添加到项目中的某个位置：|3247540|+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);
++++++++}
++++}
}|code-block|syntax|javascript|3247541|在您的global.asax中，添加以下内容：|3247542|//+Add+once
ExternalResourceDataAnnotationsValidator.ResourceType+=+typeof(CustomDataAnnotationsResources);

//+Add+one+line+for+every+attribute+you+want+their+ErrorMessageResourceType+replaced.
DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(RangeAttribute),+typeof(ExternalResourceDataAnnotationsValidator));|3247543|它将查找与错误消息的验证器类型同名的属性。您可以通过ResourceNameFunc属性对其进行更改。|3247544|编辑:+AFAIK从MVC2开始工作，因为DataAnnotationsModelValidatorProvider是在MVC2中引入的。|3247545|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

You could try doing this:

Add this class somewhere in your project:

<pre><code> public class ExternalResourceDataAnnotationsValidator : DataAnnotationsModelValidator&lt;ValidationAttribute&gt;
{
 /// &lt;summary&gt;
 /// The type of the resource which holds the error messqages
 /// &lt;/summary&gt;
 public static Type ResourceType { get; set; }

 /// &lt;summary&gt;
 /// Function to get the ErrorMessageResourceName from the Attribute
 /// &lt;/summary&gt;
 public static Func&lt;ValidationAttribute, string&gt; ResourceNameFunc 
 {
 get { return _resourceNameFunc; }
 set { _resourceNameFunc = value; }
 }
 private static Func&lt;ValidationAttribute, string&gt; _resourceNameFunc = attr =&gt; 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);
 }
 }
}
</code></pre>

and in your global.asax, add the following:

<pre><code>// Add once
ExternalResourceDataAnnotationsValidator.ResourceType = typeof(CustomDataAnnotationsResources);

// Add one line for every attribute you want their ErrorMessageResourceType replaced.
DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(RangeAttribute), typeof(ExternalResourceDataAnnotationsValidator));
</code></pre>

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.

blocks|key|3247560|text|我做了另一种方法。它仍然需要您继承DataAnnotation属性，但您可以获得更灵活的翻译解决方案。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3247561|来自my+blog+post的代码(阅读了解更多细节)|3247562|最终结果|BOLD|3247563|public+class+User
{
++++[Required]
++++[LocalizedDisplayNameAttribute("User_Id")]
++++public+int+Id+{+get;+set;+}

++++[Required]
++++[StringLength(40)]
++++[LocalizedDisplayNameAttribute("User_FirstName")]
++++public+string+FirstName+{+get;+set;+}

++++[Required]
++++[StringLength(40)]
++++[LocalizedDisplayNameAttribute("User_LastName")]
++++public+string+LastName+{+get;+set;+}
}|code-block|syntax|javascript|3247564|像这样的，1继承了所有的数据注释属性|3247565|public+class+RequiredAttribute+:+System.ComponentModel.DataAnnotations.RequiredAttribute
{
++++private+string+_displayName;

++++public+RequiredAttribute()
++++{
++++++++ErrorMessageResourceName+=+"Validation_Required";
++++}

++++protected+override+ValidationResult+IsValid(object+value,+ValidationContext+validationContext)
++++{
++++++++_displayName+=+validationContext.DisplayName;
++++++++return+base.IsValid(value,+validationContext);
++++}

++++public+override+string+FormatErrorMessage(string+name)
++++{
++++++++var+msg+=+LanguageService.Instance.Translate(ErrorMessageResourceName);
++++++++return+string.Format(msg,+_displayName);
++++}
}|3247566|2继承DisplayNameAttribute|3247567|public+class+LocalizedDisplayNameAttribute+:+DisplayNameAttribute
{
++++private+PropertyInfo+_nameProperty;
++++private+Type+_resourceType;

++++public+LocalizedDisplayNameAttribute(string+className,+string+propertyName)
++++++++:+base(className+%2B+(propertyName+==+null+?+"_Class"+:+("_"+%2B+propertyName)))
++++{

++++}

++++public+override+string+DisplayName
++++{
++++++++get
++++++++{
++++++++++++return+LanguageService.Instance.Translate(base.DisplayName)+??+"**"+%2B+base.DisplayName+%2B+"**";
++++++++}
++++}
}|3247568|3.创建语言服务(您可以在其中切换到任何语言源)|3247569|public+class+LanguageService
{
++++private+static+LanguageService+_instance+=+new+LanguageService();
++++private+List<ResourceManager>+_resourceManagers+=+new+List<ResourceManager>();

++++private+LanguageService()
++++{
++++}

++++public+static+LanguageService+Instance+{+get+{+return+_instance;+}+}

++++public+void+Add(ResourceManager+mgr)
++++{
++++++++_resourceManagers.Add(mgr);
++++}

++++public+string+Translate(string+key)
++++{
++++++++foreach+(var+item+in+_resourceManagers)
++++++++{
++++++++++++var+value+=+item.GetString(key);
++++++++++++if+(value+!=+null)
++++++++++++++++return+value;
++++++++}

++++++++return+null;
++++}
}|3247570|最后，您需要注册用于转换验证消息和模型的字符串表|3247571|LanguageService.Instance.Add(MyNameSpace.ModelResource.ResourceManager);
LanguageService.Instance.Add(MyNameSpace.ValidationResources.ResourceManager);|3247572|entityMap|0|LINK|mutability|MUTABLE|url|http://blog.gauffin.org/2010/11/simplified-localization-for-dataannotations/^0|H|E|0|2|C|0|0|0|4|0|0|5|D|0|0|0|N|0|0|0|O|0|0|0|O|0|0^^$0|@$1|2|3|4|5|6|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1G|8|@]|D|@$9|1H|A|1I|1|1J]]|E|$]]|$1|H|3|I|5|6|7|1K|8|@$9|1L|A|1M|B|J]]|D|@]|E|$]]|$1|K|3|L|5|M|7|1N|8|@]|D|@]|E|$N|O]]|$1|P|3|Q|5|6|7|1O|8|@$9|1P|A|1Q|B|J]]|D|@]|E|$]]|$1|R|3|S|5|M|7|1R|8|@]|D|@]|E|$N|O]]|$1|T|3|U|5|6|7|1S|8|@$9|1T|A|1U|B|J]]|D|@]|E|$]]|$1|V|3|W|5|M|7|1V|8|@]|D|@]|E|$N|O]]|$1|X|3|Y|5|6|7|1W|8|@$9|1X|A|1Y|B|J]]|D|@]|E|$]]|$1|Z|3|10|5|M|7|1Z|8|@]|D|@]|E|$N|O]]|$1|11|3|12|5|6|7|20|8|@$9|21|A|22|B|J]]|D|@]|E|$]]|$1|13|3|14|5|M|7|23|8|@]|D|@]|E|$N|O]]|$1|15|3|-4|5|6|7|24|8|@]|D|@]|E|$]]]|16|$17|$5|18|19|1A|E|$1B|1C]]]]

I did another approach. It still needs you to inherit <code>DataAnnotation</code> attributes, but you can get a more flexible translation solution.

Code from <a href="http://blog.gauffin.org/2010/11/simplified-localization-for-dataannotations/" rel="nofollow">my blog post</a> (read it fore more details)

End result

<pre><code>public class User
{
 [Required]
 [LocalizedDisplayNameAttribute("User_Id")]
 public int Id { get; set; }

 [Required]
 [StringLength(40)]
 [LocalizedDisplayNameAttribute("User_FirstName")]
 public string FirstName { get; set; }

 [Required]
 [StringLength(40)]
 [LocalizedDisplayNameAttribute("User_LastName")]
 public string LastName { get; set; }
}
</code></pre>

1 Inherit all data annotation attributes like this

<pre><code>public class RequiredAttribute : System.ComponentModel.DataAnnotations.RequiredAttribute
{
 private string _displayName;

 public RequiredAttribute()
 {
 ErrorMessageResourceName = "Validation_Required";
 }

 protected override ValidationResult IsValid(object value, ValidationContext validationContext)
 {
 _displayName = validationContext.DisplayName;
 return base.IsValid(value, validationContext);
 }

 public override string FormatErrorMessage(string name)
 {
 var msg = LanguageService.Instance.Translate(ErrorMessageResourceName);
 return string.Format(msg, _displayName);
 }
}
</code></pre>

2 Inherit DisplayNameAttribute

<pre><code>public class LocalizedDisplayNameAttribute : DisplayNameAttribute
{
 private PropertyInfo _nameProperty;
 private Type _resourceType;

 public LocalizedDisplayNameAttribute(string className, string propertyName)
 : base(className + (propertyName == null ? "_Class" : ("_" + propertyName)))
 {

 }

 public override string DisplayName
 {
 get
 {
 return LanguageService.Instance.Translate(base.DisplayName) ?? "**" + base.DisplayName + "**";
 }
 }
}
</code></pre>

3. Create the language service (you can switch to any language source in it)

<pre><code>public class LanguageService
{
 private static LanguageService _instance = new LanguageService();
 private List&lt;ResourceManager&gt; _resourceManagers = new List&lt;ResourceManager&gt;();

 private LanguageService()
 {
 }

 public static LanguageService Instance { get { return _instance; } }

 public void Add(ResourceManager mgr)
 {
 _resourceManagers.Add(mgr);
 }

 public string Translate(string key)
 {
 foreach (var item in _resourceManagers)
 {
 var value = item.GetString(key);
 if (value != null)
 return value;
 }

 return null;
 }
}
</code></pre>

Finally you need to register the string tables you use to translate the validation messages and your models

<pre><code>LanguageService.Instance.Add(MyNameSpace.ModelResource.ResourceManager);
LanguageService.Instance.Add(MyNameSpace.ValidationResources.ResourceManager);
</code></pre>

There's a way to set the default resource to the data annotations validations?

I don't wanna make something like this:

<pre><code>[Required(ErrorMessage="Name required.", ErrorMessageResourceType=typeof(CustomDataAnnotationsResources)]
public string Name { get; set; }
</code></pre>

I would like something like this:

Global.asax

<pre><code>DataAnnotations.DefaultResources = typeof(CustomDataAnnotationsResources);
</code></pre>

then

<pre><code>[Required]
public string Name { get; set; }
</code></pre>

someone gimme a light!

thanks in advance

EDIT

My real problem was with EF Code First CTP4. CTP5 fix it. Thanks for everyone.

Default resource for data annotations in ASP.NET MVC

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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有一种方法可以将默认资源设置为数据注释验证吗？我不想做这样的事情：[Required(ErrorMessage="Name required.", ErrorMessageResourceType=typeof(CustomDataAnnotationsResources)]public string Name { g...

问ASP.NET MVC中数据批注的默认资源
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