System.Attribute排除重複值

Question

我有一個列表屬性，它是用System.Attribute類修飾的。是否可以在列表的屬性級別包含一個檢查以僅包含不同的值？

[ConfigSettingList(typeof(string),Description="Contains a list of supported handheld devices . Default is the below list .")] 
     public List<string> HandHeldDevices 
     { 
      get 
      { 
       if (_handHeldDevices == null) 
       { 
        _handHeldDevices = new List<string> { "Android", "webOS", "iPhone", "iPad", "iPod", "BlackBerry", "IEMobile", "Opera Mini" }; 
       } 
       return _handHeldDevices; 
      } 
     } 
     private List<string> _handHeldDevices; 

ConfigSettingList繼承自System.Attribute。我想檢查不同的值。

Answer 1

使用HashSet<T>它不允許重複的元素。