C#中Description特性主要用于枚举和属性,方法比较简单,记录一下以便后期使用。
扩展类DescriptionExtension代码如下:
using System; using System.ComponentModel; using System.Reflection; /// <summary> /// 描述特性的读取扩展类 /// </summary> public static class DescriptionExtension { /// <summary> /// 获取枚举的描述信息 /// </summary> public static string GetDescription(this Enum em) { Type type = em.GetType(); FieldInfo fd = type.GetField(em.ToString()); string des = fd.GetDescription(); return des; } /// <summary> /// 获取属性的描述信息 /// </summary> public static string GetDescription(this Type type, string proName) { PropertyInfo pro = type.GetProperty(proName); string des = proName; if (pro != null) { des = pro.GetDescription(); } return des; } /// <summary> /// 获取属性的描述信息 /// </summary> public static string GetDescription(this MemberInfo info) { var attrs = (DescriptionAttribute[])info.GetCustomAttributes(typeof(DescriptionAttribute), false); string des = info.Name; foreach (DescriptionAttribute attr in attrs) { des = attr.Description; } return des; } }
使用方法:
[Description("测试枚举名")] enum TestEnum { [Description("测试")] Test1 } [Description("测试类名")] class TestClass { [Description("测试class")] public int Test1 { get; set; } } //获取枚举类型的描述特性 string str1 = typeof(TestEnum).GetDescription(); //获取枚举值的描述特性 string str2 =TestEnum.Test1.GetDescription(); str2 = typeof(TestEnum).GetDescription(nameof(TestEnum.Test1)); str2 = typeof(TestEnum).GetDescription(TestEnum.Test1.ToString()); //获取类的描述特性 string str3 = typeof(TestClass).GetDescription(); //获取属性的描述特性(也可以反射遍历属性列表) string str4 = typeof(TestClass).GetDescription(); TestClass test = new TestClass(); str4 = typeof(TestClass).GetDescription(nameof(test.Test1));