枚举转化成List及读取枚举Description属性值

 1   public static class EnumHelper
 2     {
 3         /// <summary>
 4         /// 获取枚举变量值的 Description 属性
 5         /// </summary>
 6         /// <param name="obj">枚举变量</param>
 7         /// <param name="isTop">是否改变为返回该类、枚举类型的头 Description 属性，而不是当前的属性或枚举变量值的 Description 属性</param>
 8         /// <returns>如果包含 Description 属性，则返回 Description 属性的值，否则返回枚举变量值的名称</returns>
 9         public static string GetDescription(this object obj, bool isTop)
10         {
11             if (obj == null)
12             {
13                 return string.Empty;
14             }
15             try
16             {
17                 Type _enumType = obj.GetType();
18                 DescriptionAttribute dna = null;
19                 if (isTop)
20                 {
21                     dna = (DescriptionAttribute)Attribute.GetCustomAttribute(_enumType, typeof(DescriptionAttribute));
22                 }
23                 else
24                 {
25                     FieldInfo fi = _enumType.GetField(Enum.GetName(_enumType, obj));
26                     dna = (DescriptionAttribute)Attribute.GetCustomAttribute(
27                        fi, typeof(DescriptionAttribute));
28                 }
29                 if (dna != null && string.IsNullOrEmpty(dna.Description) == false)
30                     return dna.Description;
31             }
32             catch
33             {
34             }
35             return obj.ToString();
36         }
37 
38         /// <summary>
39         /// 将枚举转成List
40         /// </summary>
41         /// <typeparam name="T"></typeparam>
42         /// <returns></returns>
43         public static List<EnumberEntity> EnumToList<T>()
44         {
45             List<EnumberEntity> list = new List<EnumberEntity>();
46 
47             foreach (var e in Enum.GetValues(typeof(T)))
48             {
49                 EnumberEntity m = new EnumberEntity();
50                 object[] objArr = e.GetType().GetField(e.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), true);
51                 if (objArr != null && objArr.Length > 0)
52                 {
53                     DescriptionAttribute da = objArr[0] as DescriptionAttribute;
54                     m.Desction = da.Description;
55                 }
56                 m.EnumValue = Convert.ToInt32(e);
57                 m.EnumName = e.ToString();
58                 list.Add(m);
59             }
60             return list;
61         }
62     }
63 
64     public class EnumberEntity
65     {
66         /// <summary>
67         /// 枚举的描述
68         /// </summary>
69         public string Desction { set; get; }
70 
71         /// <summary>
72         /// 枚举名称
73         /// </summary>
74         public string EnumName { set; get; }
75 
76         /// <summary>
77         /// 枚举对象的值
78         /// </summary>
79         public int EnumValue { set; get; }
80 
81     }

定义枚举：

 1  /// <summary>
 2     /// 操作类型
 3     /// d:2019-12-4
 4     /// </summary>
 5     public enum OperateType
 6     {
 7         /// <summary>
 8         /// 增加
 9         /// </summary>
10         [Description("增加")]
11         Add = 1,
12 
13         /// <summary>
14         /// 修改
15         /// </summary>
16         [Description("修改")]
17         Edit = 2,
18 
19         /// <summary>
20         /// 删除
21         /// </summary>
22         [Description("删除")]
23         Del = 3
24 
25         ///// <summary>
26         ///// 查询
27         ///// </summary>
28         //[Description("查询")]
29         //Query = 4
30     }