我有下拉列表,它是从枚举中填充的。我的解决方案项目由两部分组成:域和UI项目。这个枚举是域模型的一部分,因此它被放置在Domain项目中。
public enum ActivityStatus
{
InProgress = 0,
Completed = 1,
Freezed = 2,
NotStarted = 3,
None = 4
}
我想使用RESX文件本地化UI上的下拉内容。我查看了一些解决方案,他们建议在Enum字段上提供自定义属性。但我认为本地化超出了我的域模型的范围,所以我想在这里拥有这些属性。有没有办法在我的UI上进行本地化?
答案 0 :(得分:4)
我也在我的项目中制作了一些枚举,因此,我有一个这样的类,在枚举中创建一个注释:
public class LocalizedEnumAttribute : DescriptionAttribute
{
private PropertyInfo _nameProperty;
private Type _resourceType;
public LocalizedEnumAttribute(string displayNameKey)
: base(displayNameKey)
{
}
public Type NameResourceType
{
get
{
return _resourceType;
}
set
{
_resourceType = value;
_nameProperty = _resourceType.GetProperty(this.Description, BindingFlags.Static | BindingFlags.Public);
}
}
public override string Description
{
get
{
//check if nameProperty is null and return original display name value
if (_nameProperty == null)
{
return base.Description;
}
return (string)_nameProperty.GetValue(_nameProperty.DeclaringType, null);
}
}
}
我还有一个EnumHelper
类可以在我的项目中用来创建本地化的枚举值字典:
public static class EnumHelper
{
// get description data annotation using RESX files when it has
public static string GetDescription(Enum @enum)
{
if (@enum == null)
return null;
string description = @enum.ToString();
try
{
FieldInfo fi = @enum.GetType().GetField(@enum.ToString());
DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
if (attributes.Any())
description = attributes[0].Description;
}
catch
{
}
return description;
}
public static IDictionary<TKey, string> GetEnumDictionary<T, TKey>()
where T : struct
{
Type t = typeof (T);
if (!t.IsEnum)
throw new InvalidOperationException("The generic type T must be an Enum type.");
var result = new Dictionary<TKey, string>();
foreach (Enum r in Enum.GetValues(t))
{
var k = Convert.ChangeType(r, typeof(TKey));
var value = (TKey)k;
result.Add(value, r.GetDescription());
}
return result;
}
}
public static class EnumExtensions
{
public static string GetDescription(this Enum @enum)
{
return EnumHelper.GetDescription(@enum);
}
}
使用此课程,您可以在枚举上使用:
public enum ActivityStatus
{
[LocalizedEnum("InProgress", NameResourceType = typeof(Resources.Messages))]
InProgress = 0,
[LocalizedEnum("Completed", NameResourceType = typeof(Resources.Messages))]
Completed = 1,
[LocalizedEnum("Freezed", NameResourceType = typeof(Resources.Messages))]
Freezed = 2,
[LocalizedEnum("NotStarted", NameResourceType = typeof(Resources.Messages))]
NotStarted = 3,
[LocalizedEnum("None", NameResourceType = typeof(Resources.Messages))]
None = 4
}
要创建一个这样的组合框,你可以在asp.net mvc的控制器上使用,如下所示:
var data = EnumHelper.GetEnumDictionary<ActivityStatus, int>();
答案 1 :(得分:2)
我猜您可以使用HttpContext.GetGlobalResourceObject()
获取枚举名称的本地化字符串:
// here you get a list of localized strings from `SiteResources.resx` where the keys of strings present by enum names
var names = (Enum.GetNames(typeof(ActivityStatus)).Select(x => HttpContext.GetGlobalResourceObject("SiteResources", x).ToString()).ToList();