C# Enum 获取枚举属性

Enum使用 获取枚举属性

注意：扩展方法必须定义为静态类，静态方法中。

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public enum EnumPatientSource     {         [Description("住院")]         INHOSPITAL = -1,           [Description("门诊")]         OUTPATIENT = 0,     }       public static class EnumHelper     {         public static string ToDescription(this Enum val)         {             var type = val.GetType();             var memberInfo = type.GetMember(val.ToString());             var attributes = memberInfo[0].GetCustomAttributes(typeof(DescriptionAttribute), false);             //如果没有定义描述，就把当前枚举值的对应名称返回             if (attributes == null || attributes.Length != 1) return val.ToString();               return (attributes.Single() as DescriptionAttribute).Description;         }     }

测试使用如下所示：

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private void button2_Click(object sender, EventArgs e)        {            StringBuilder buf = new StringBuilder(1024);            buf.AppendLine("枚举==" + EnumPatientSource.INHOSPITAL);            buf.AppendLine("枚举属性==" + EnumHelper.ToDescription(EnumPatientSource.INHOSPITAL));            MessageBox.Show(buf.ToString());        }