问题
model
[MetadataType(typeof(UserMetaData))]
public class User
{
public int Id { get; set; }
public string UserName { get; set; }
}
public class UserMetaData
{
public int Id { get; set; }
[Required(ErrorMessageResourceType = typeof(Resources.ModelValidation), ErrorMessageResourceName = "UserNameRequired")]
[LocalizedDisplayNameAttribute("UserName", NameResourceType = typeof(Resources.ModelValidation))]
public string UserName { get; set; }
}
view
@using (Html.BeginForm())
{
<div>
@Html.LabelFor(x => x.UserName)
@Html.TextBoxFor(x => x.UserName)
@Html.ValidationMessageFor(x => x.UserName)
</div>
<div>
<input type="submit" value="Gönder" />
</div>
}
LocalizedDisplayNameAttribute
public class LocalizedDisplayNameAttribute : DisplayNameAttribute
{
private PropertyInfo _nameProperty;
private Type _resourceType;
public LocalizedDisplayNameAttribute(string displayNameKey)
: base(displayNameKey)
{ }
public Type NameResourceType
{
get { return _resourceType; }
set
{
_resourceType = value;
//initialize nameProperty when type property is provided by setter
_nameProperty = _resourceType.GetProperty(base.DisplayName, BindingFlags.Static | BindingFlags.Public);
}
}
public override string DisplayName
{
get
{
//check if nameProperty is null and return original display name value
if (_nameProperty == null) { return base.DisplayName; }
return (string)_nameProperty.GetValue(_nameProperty.DeclaringType, null);
}
}
}
resource file
output
RequiredAttribute localization works, but LocalizedDisplayNameAttribute does not work. I cant find any solution to fix this.
Any suggestion, where is the missing?
回答1:
You seem to be reinventing the wheels with this LocalizedDisplayNameAttribute
attribute. This functionality is already built into the framework, right into the [Display]
attribute that you could use directly:
public class UserMetaData
{
public int Id { get; set; }
[Required(ErrorMessageResourceType = typeof(Resources.ModelValidation), ErrorMessageResourceName = nameof(Resources.ModelValidation.UserNameRequired)]
[Display(ResourceType = typeof(Resources.ModelValidation), Name = nameof(Resources.ModelValidation.UserName))]
public string UserName { get; set; }
}
As far as why your wheel reinvention doesn't work, well, can't say for sure. Why care when you could get rid of it anyways.
来源:https://stackoverflow.com/questions/16837855/dataannotations-localization