如何获取枚举的属性

可能重复：
获得Enum价值的属性

这是我的class级：

[AttributeUsage(AttributeTargets.Field)] public sealed class LabelAttribute : Attribute { public LabelAttribute(String labelName) { Name = labelName; } public String Name { get; set; } } 

我想得到属性的字段：

 public enum ECategory { [Label("Safe")] Safe, [Label("LetterDepositBox")] LetterDepositBox, [Label("SavingsBookBox")] SavingsBookBox, } 

Answer 1

阅读ECategory.Safe Label属性值：

 var type = typeof(ECategory); var info = type.GetMember(ECategory.Safe.ToString()); var attributes = info[0].GetCustomAttributes(typeof(LabelAttribute), false); var label = ((LabelAttribute)attributes[0]).Name; 

Answer 2

您可以创建扩展：

 public static class CustomExtensions { public static string GetLabel(this ECategory value) { Type type = value.GetType(); string name = Enum.GetName(type, value); if (name != null) { FieldInfo field = type.GetField(name); if (field != null) { LabelAttribute attr = Attribute.GetCustomAttribute(field, typeof(LabelAttribute )) as LabelAttribute ; if (attr != null) { return attr.Name; } } } return null; } } 

然后你可以这样做：

 var category = ECategory.Safe; var labelValue = category.GetLabel(); 

Answer 3

 var fieldsMap = typeof(ECategory).GetFields() .Where(fi => fi.GetCustomAttributes().Any(a => a is LabelAttribute)) .Select(fi => new { Value = (ECategory)fi.GetValue(null), Label = fi.GetCustomAttributes(typeof(LabelAttribute), false) .Cast() .Fist().Name }) .ToDictionary(f => f.Value, f => f.Label); 

之后，您可以检索每个值的标签，如下所示：

 var label = fieldsMap[ECategory.Safe];