類型枚舉

Question

我努力使此方法泛型方法：

public static SelectList LanguagesToSelectList() 
{ 
    return new SelectList(
     Enum.GetValues(typeof(Languages)) 
     .Cast<Languages>() 
     .Select(g => new KeyValuePair<Languages, string>(
      g, 
      Resources.Views_GamesAndApplications.ResourceManager.GetString("Language_" + g.ToString() 
      ) 
     )), 
     "Key", 
     "Value" 
     ); 
} 

這裏就是我的了：

public static SelectList ToSelectList(Enum enumType, ResourceManager resourceManager, string resourcePrefix) 
{ 
    return new SelectList(
     Enum.GetValues(typeof(enumType)) 
     .Cast<enumType>() 
     .Select(g => new KeyValuePair<enumType, string>(
      g, 
      resourceManager.GetString(resourcePrefix + g.ToString()) 
      )), 
     "Key", 
     "Value"); 
} 

然而，enumType不應該Enum類型（也不應該是Type類型），我不知道應該是什麼類型，或者我應該改寫整個方法。

用法示例（符合給定的答案）：

@Html.DropDownListFor(
    m => m.Language, 
    SelectListHelper.ToSelectList<Languages> 
     (Resources.Views_GamesAndApplications.ResourceManager,"Language_")) 

謝謝。

Answer 1

public static SelectList ToSelectList<T>(ResourceManager resourceManager, string resourcePrefix) 
    where T : struct 
{ 
    return new SelectList(Enum.GetValues(typeof(T)).Cast<T>() 
       .Select(g => new KeyValuePair<T, string>(g, resourceManager.GetString(resourcePrefix + g.ToString()))), "Key", "Value"); 
} 

//Example: 
var list = ToSelectList<Languages>(someResourceManager, "somePrefix");