全局本地化验证

发布时间：2020-12-16 07:22:30 所属栏目：asp.Net 来源：网络整理

导读：我正在使用System.ComponeneModel.DataAnnotations属性,例如Required和StringLength.是否可以全局本地化其错误消息？我知道我能做到这一点 [Required(ErrorMessageResourceName = "Required",ErrorMessageResourceType = typeof(Resources.Validation))] 但

我正在使用System.ComponeneModel.DataAnnotations属性,例如Required和StringLength.是否可以全局本地化其错误消息？

我知道我能做到这一点

[Required(ErrorMessageResourceName = "Required",ErrorMessageResourceType = typeof(Resources.Validation))]

但到处都这样,我使用必需的属性将是疯狂的.另外我想避免像这样的东西：

public class LocalizedRequiredAttribute : RequiredAttribute {
    public LocalizedRequiredAttribute()
        : base() {
        ErrorMessageResourceName = "Required";
        ErrorMessageResourceType = typeof(Resources.Validation);
    }
}

(但如果没有其他办法,我会满足于此)

解决方法

AFAIK您需要自定义属性或指定ErrorMessageResourceName和ErrorMessageResourceType属性.还有另一种可能性 detailed here：

Create a global resource class in
App_GlobalResources,and set
DefaultModelBinder.ResourceClassKey to
the name of this class (for example,
if you made “Messages.resx”,then set
ResourceClassKey to “Messages”).

There are two strings you can override
in MVC 2:

The string value for
“PropertyValueInvalid” is used when
the data the user entered isn’t
compatible with the data type (for
example,typing in “abc” for an
integer field). The default message
for this is: “The value ‘{0}’ is not
valid for {1}.”

The string value for
“PropertyValueRequired” is used when
the user did not enter any data for a
field which is not nullable (for
example,an integer field). The
default message for this is: “A value
is required.”

It’s important to note in the second case that,if you have the DataAnnotationsModelValidatorProvider in your validator providers list (which it is by default),then you will never see this second message. This provider sees non-optional fields and adds an implied [Required] attribute to them so that their messages will be consistent with other fields with explicit [Required] attributes and to ensure that you get client-side validation for required fields.

（编辑：李大同）

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