另一个MVC本地化问题…
我正在尝试本地化ASP.Net MVC 3应用程序使用本地化的资源文件来显示视图中的文本,按照建议.
像往常一样,问题在于尝试从数据注释中本地化默认错误消息.
[required( ErrorMessageResourceType = typeof(CustomResourceManager),ErrorMessageResourceName = "ResourceKey")] public string Username { get; set; }
甚至,哪个更好和更喜欢,你可以覆盖默认消息,像这样：Default resource for data annotations in ASP.NET MVC,所以你可以离开属性像：
[required] public string Username { get; set; }
最后一个方法是我正在关注的一个方法,它可以工作,但只有当您要覆盖的DataAnnotation具有ONE和ONLY一个错误消息时,因为它总是会查找与自定义资源文件中的属性相同的资源密钥(例如“必需”需要资源文件中的“requiredAttribute”条目)
其他属性,如StringLength,具有多个错误消息,具体取决于您使用的可选参数.所以,如果你有一个模型：
public class Person
{
[required]
[StringLengthLocalizedAttribute(10,MinimumLength = 5)]
[Display(Name = "User name")]
public string UserName { get; set; }
}
错误消息是“用户名字段必须是最小长度为5,最大长度为10的字符串”.
如果将StringLength属性更改为：
[StringLengthLocalizedAttribute(10)]
错误消息更改为“字段用户名必须是最大长度为10的字符串.”因此,在这种情况下,至少有2个默认错误消息要覆盖,并且@ kim-tranjan提供的解决方案失败.
我的部分解决方案是实现我自己的StringLength属性,如下所示：
public class StringLengthLocalizedAttribute : StringLengthAttribute
{
public StringLengthLocalizedAttribute(int maximumLength) : base(maximumLength)
{
ErrorMessageResourceType = typeof(CustomValidationResource);
}
public override string FormatErrorMessage(string name)
{
ErrorMessageResourceName = MinimumLength > 0 ? "StringLengthAttributeMinMax" : "StringLengthAttributeMax";
return base.FormatErrorMessage(name);
}
}
我有一个本地化资源“CustomValidationResource”与验证消息,并将其设置为ErrorMessageResourceType.然后,重写FormatErrorMessage函数,根据可选参数,我决定应该应用哪个消息字符串.
所以,这里的问题是：有人知道我们可以在哪里找到DataAnnotation Attributes使用的资源密钥的整个列表,然后看看我们在每个不同的测试中有多少不同的错误消息？
或者更好的是,我们可以使用原始的RESX文件来查看字符串模板并使用相同的资源密钥对其进行本地化吗？这样,只需要更改ErrorMessageResourceType即可适用于所有的DataAnnotations Attibutes,我不需要猜测在本地化字符串中放置“{1}”或“{2}”的位置.
谢谢,
塞尔吉
解决方法
如果您仍在查找验证字符串的概述,可以在下面找到System.ComponentModel.DataAnnotations.Resources.DataAnnotationsResources类中的资源,如Tz_所述：
[ArgumentIsNullOrWhitespace,The argument '{0}' cannot be null,empty or contain only white space.]
[AssociatedMetadataTypeTypeDescriptor_MetadataTypeContainsUnknownProperties,The associated Metadata type for type '{0}' contains the following unknown properties or fields: {1}. Please make sure that the names of these members match the names of the properties on the main type.]
[AttributeStore_Type_Must_Be_Public,The type '{0}' must be public.]
[AttributeStore_Unknown_Method,The type '{0}' does not contain a public method named '{1}'.]
[AttributeStore_Unknown_Property,The type '{0}' does not contain a public property named '{1}'.]
[Common_NullOrEmpty,Value cannot be null or empty.]
[Common_PropertyNotFound,The property {0}.{1} could not be found.]
[CompareAttribute_MustMatch,'{0}' and '{1}' do not match.]
[CompareAttribute_UnknownProperty,Could not find a property named {0}.]
[CreditCardAttribute_Invalid,The {0} field is not a valid credit card number.]
[CustomValidationAttribute_Method_Must_Return_ValidationResult,The CustomValidationAttribute method '{0}' in type '{1}' must return System.ComponentModel.DataAnnotations.ValidationResult. Use System.ComponentModel.DataAnnotations.ValidationResult.Success to represent success.]
[CustomValidationAttribute_Method_Not_Found,The CustomValidationAttribute method '{0}' does not exist in type '{1}' or is not public and static.]
[CustomValidationAttribute_Method_required,The CustomValidationAttribute.Method was not specified.]
[CustomValidationAttribute_Method_Signature,The CustomValidationAttribute method '{0}' in type '{1}' must match the expected signature: public static ValidationResult {0}(object value,ValidationContext context). The value can be strongly typed. The ValidationContext parameter is optional.]
[CustomValidationAttribute_Type_Conversion_Failed,Could not convert the value of type '{0}' to '{1}' as expected by method {2}.{3}.]
[CustomValidationAttribute_Type_Must_Be_Public,The custom validation type '{0}' must be public.]
[CustomValidationAttribute_ValidationError,{0} is not valid.]
[CustomValidationAttribute_ValidatorType_required,The CustomValidationAttribute.ValidatorType was not specified.]
[DataTypeAttribute_EmptyDataTypeString,The custom DataType string cannot be null or empty.]
[DisplayAttribute_PropertyNotSet,The {0} property has not been set. Use the {1} method to get the value.]
[EmailAddressAttribute_Invalid,The {0} field is not a valid e-mail address.]
[EnumDataTypeAttribute_TypeCannotBeNull,The type provided for EnumDataTypeAttribute cannot be null.]
[EnumDataTypeAttribute_TypeNeedsToBeAnEnum,The type '{0}' needs to represent an enumeration type.]
[FileExtensionsAttribute_Invalid,The {0} field only accepts files with the following extensions: {1}]
[LocalizableString_LocalizationFailed,Cannot retrieve property '{0}' because localization Failed. Type '{1}' is not public or does not contain a public static string property with the name '{2}'.]
[MaxLengthAttribute_InvalidMaxLength,MaxLengthAttribute must have a Length value that is greater than zero. Use MaxLength() without parameters to indicate that the string or array can have the maximum allowable length.]
[MaxLengthAttribute_ValidationError,The field {0} must be a string or array type with a maximum length of '{1}'.]
[MetadataTypeAttribute_TypeCannotBeNull,MetadataClassType cannot be null.]
[MinLengthAttribute_InvalidMinLength,MinLengthAttribute must have a Length value that is zero or greater.]
[MinLengthAttribute_ValidationError,The field {0} must be a string or array type with a minimum length of '{1}'.]
[PhoneAttribute_Invalid,The {0} field is not a valid phone number.]
[RangeAttribute_ArbitraryTypeNotIComparable,The type {0} must implement {1}.]
[RangeAttribute_MinGreaterThanMax,The maximum value '{0}' must be greater than or equal to the minimum value '{1}'.]
[RangeAttribute_Must_Set_Min_And_Max,The minimum and maximum values must be set.]
[RangeAttribute_Must_Set_Operand_Type,The OperandType must be set when strings are used for minimum and maximum values.]
[RangeAttribute_ValidationError,The field {0} must be between {1} and {2}.]
[RegexAttribute_ValidationError,The field {0} must match the regular expression '{1}'.]
[RegularExpressionAttribute_Empty_Pattern,The pattern must be set to a valid regular expression.]
[requiredAttribute_ValidationError,The {0} field is required.]
[StringLengthAttribute_InvalidMaxLength,The maximum length must be a nonnegative integer.]
[StringLengthAttribute_ValidationError,The field {0} must be a string with a maximum length of {1}.]
[StringLengthAttribute_ValidationErrorIncludingMinimum,The field {0} must be a string with a minimum length of {2} and a maximum length of {1}.]
[UIHintImplementation_ControlParameterKeyIsNotAString,The key parameter at position {0} with value '{1}' is not a string. Every key control parameter must be a string.]
[UIHintImplementation_ControlParameterKeyIsNull,The key parameter at position {0} is null. Every key control parameter must be a string.]
[UIHintImplementation_ControlParameterKeyOccursMoreThanOnce,The key parameter at position {0} with value '{1}' occurs more than once.]
[UIHintImplementation_NeedEvenNumberOfControlParameters,The number of control parameters must be even.]
[UrlAttribute_Invalid,The {0} field is not a valid fully-qualified http,https,or ftp URL.]
[ValidationAttribute_Cannot_Set_ErrorMessage_And_Resource,Either ErrorMessageString or ErrorMessageResourceName must be set,but not both.]
[ValidationAttribute_IsValid_NotImplemented,IsValid(object value) has not been implemented by this class. The preferred entry point is GetValidationResult() and classes should override IsValid(object value,ValidationContext context).]
[ValidationAttribute_NeedBothResourceTypeAndResourceName,Both ErrorMessageResourceType and ErrorMessageResourceName need to be set on this attribute.]
[ValidationAttribute_ResourcePropertyNotStringType,The property '{0}' on resource type '{1}' is not a string type.]
[ValidationAttribute_ResourceTypeDoesNotHaveProperty,The resource type '{0}' does not have an accessible static property named '{1}'.]
[ValidationAttribute_ValidationError,The field {0} is invalid.]
[ValidationContext_Must_Be_Method,The ValidationContext for the type '{0}',member name '{1}' must provide the MethodInfo.]
[ValidationContextServiceContainer_ItemAlreadyExists,A service of type '{0}' already exists in the container.]
[Validator_InstanceMustMatchValidationContextInstance,The instance provided must match the ObjectInstance on the ValidationContext supplied.]
[Validator_Property_Value_Wrong_Type,The value for property '{0}' must be of type '{1}'.]
(MVC 4,.NET 4.0)
