從enum Asp.net MVC的可本地化的下拉列表

Question

我有下拉，這是從枚舉中填充。我的解決方案項目由兩部分組成：域和UI項目。而這個枚舉是領域模型的一部分，所以它被放置在Domain項目中。

public enum ActivityStatus 
    { 
     InProgress = 0, 
     Completed = 1, 
     Freezed = 2, 
     NotStarted = 3, 
     None = 4 
    } 

我想使用RESX文件在UI上本地化下拉內容。我查看了一些解決方案，他們提議在Enum字段上提供自定義屬性。但我認爲本地化超出了我的領域模型的範圍，所以我想在這裏有這些屬性。有沒有辦法在我的UI上進行本地化？

Answer 1

我guees你可以使用HttpContext.GetGlobalResourceObject()用於獲取用於枚舉名稱的本地化字符串：

// 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(); 

Answer 2

我也改變了我的項目本地化一些枚舉，所以，我有一類這樣的，在創建註釋枚舉：

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); 
     } 
    } 
} 

我也有EnumHelper類在我的項目中使用它來創建枚舉的字典值本地化：

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); 
    } 
} 

有了這個類，你可以在你的枚舉使用：

var data = EnumHelper.GetEnumDictionary<ActivityStatus, int>(); 

：

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 
} 

而創建的這個組合框，您可以asp.net的MVC，像這樣的控制器上使用