DataGridView中的枚舉說明

Question

我遇到枚舉說明問題。 我想讓dataGrid顯示枚舉描述，而不是枚舉的「ToString（）」。

enum DirectionEnum 
{ 
    [Description("Right to left")] 
    rtl, 

    [Description("Left to right")] 
    ltr 
} 
class Simple 
{ 
    [DisplayName("Name")] 
    public string Name { get; set; } 

    [DisplayName("Direction")] 
    public DirectionEnum dir { get; set; } 
} 
class DirectionDialog : Form 
{ 
    public DirectionDialog() 
    { 
     DataGridView table = new DataGridView(); 
     List<Simple> list = new List<Simple>(new Simple[]{ 
      new Simple{ Name = "dave", dir = DirectionEnum.ltr}, 
      new Simple{ Name = "dan", dir = DirectionEnum.rtl } 
     }); 
     table.DataSource = list; 
     //view "rtl" or "ltr" in "Direction" 
     //I want "Right to left" or "Left to right: 
    } 
} 

我想通過enum的描述來查看方向列。 我該怎麼做？ 對不起，我的英語不好。

Answer 1

class Simple 
{ 
    [DisplayName("Name")] 
    public string Name { get; set; } 

    // Remove external access to the enum value 
    public DirectionEnum dir { private get; set; } 

    // Add a new string property for the description 
    [DisplayName("Direction")] 
    public string DirDesc 
    { 
     get 
     { 
      System.Reflection.FieldInfo field = dir.GetType().GetField(dir.ToString()); 

      DescriptionAttribute attribute 
        = Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) 
         as DescriptionAttribute; 

      return attribute == null ? dir.ToString() : attribute.Description; 
     } 
    } 
}