C# 枚举的一些转换方法

逃离我推掉我的手 2021-10-25 12:09 292阅读 0赞

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1     #region 枚举公用转换类
     2     public class EnumDescConverter : System.ComponentModel.EnumConverter
     3     {
     4         protected System.Type m_MyVal;
     5         public static string GetEnumDescription(Enum value)
     6         {
     7             FieldInfo fi = value.GetType().GetField(value.ToString());
     8             DescriptionAttribute[] attributes =
     9               (DescriptionAttribute[])fi.GetCustomAttributes(
    10               typeof(DescriptionAttribute), false);
    11             return (attributes.Length > 0) ? attributes[0].Description : value.ToString();
    12         }
    13 
    14         public static string GetEnumDescription(System.Type value, string name)
    15         {
    16             FieldInfo fi = value.GetField(name);
    17             DescriptionAttribute[] attributes =
    18               (DescriptionAttribute[])fi.GetCustomAttributes(
    19               typeof(DescriptionAttribute), false);
    20             return (attributes.Length > 0) ? attributes[0].Description : name;
    21         }
    22         public static object GetEnumValue(System.Type value, string description)
    23         {
    24             FieldInfo[] fis = value.GetFields();
    25             foreach (FieldInfo fi in fis)
    26             {
    27                 DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
    28                 if (attributes.Length > 0)
    29                 {
    30                     if (attributes[0].Description == description)
    31                     {
    32                         return fi.GetValue(fi.Name);
    33                     }
    34                 }
    35                 if (fi.Name == description)
    36                 {
    37                     return fi.GetValue(fi.Name);
    38                 }
    39             }
    40             return description;
    41         }
    42         public EnumDescConverter(System.Type type)
    43             : base(type.GetType())
    44         {
    45             m_MyVal = type;
    46         }
    47         public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
    48         {
    49             if (value is Enum && destinationType == typeof(string))
    50             {
    51                 return GetEnumDescription((Enum)value);
    52             }
    53             if (value is string && destinationType == typeof(string))
    54             {
    55                 return GetEnumDescription(m_MyVal, (string)value);
    56             }
    57             return base.ConvertTo(context, culture, value, destinationType);
    58         }
    59 
    60         public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
    61         {
    62             if (value is string)
    63             {
    64                 return GetEnumValue(m_MyVal, (string)value);
    65             }
    66             if (value is Enum)
    67             {
    68                 return GetEnumDescription((Enum)value);
    69             }
    70             return base.ConvertFrom(context, culture, value);
    71         }
    72     }
    73     #endregion

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1  #region 枚举相关方法
     2     public static class EnumHelper
     3     {
     4         /// <summary>
     5         /// 根据枚举类型获取字典
     6         /// </summary>
     7         /// <param name="type">枚举类型</param>
     8         /// <returns></returns>
     9         public static Dictionary<int, string> GetEnumeTypeDic(Type type)
    10         {
    11             Dictionary<int, string> dic = new Dictionary<int, string>();
    12             int key = -1;
    13             string value = string.Empty;
    14             foreach (object gc in Enum.GetValues(type))
    15             {
    16                 key = (int)gc;
    17                 value = EnumDescConverter.GetEnumDescription((Enum)gc);
    18                 if (key != -1 && !dic.ContainsKey(key))
    19                 {
    20                     dic.Add(key, value);
    21                 }
    22             }
    23             return dic;
    24         }
    25     }
    26     #endregion

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1   #region 枚举定义
     2     public enum CHMSO
     3     {
     4         [Description("kbro")]
     5         KBRO = 5301001,
     6         [Description("TFM")]
     7         TFM = 5301002,
     8 
     9     }
    10     public enum CArea
    11     {
    12         [Description("大台北")]
    13         BigTaipei = 5310,
    14         [Description("中部")]
    15         Center = 5311,
    16         [Description("南部")]
    17         South = 5312,
    18         [Description("其他北部")]
    19         OtherNorth = 5313,
    20     }

转载于:https://www.cnblogs.com/-ShiL/archive/2012/05/24/Star\_201205240244.html

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