Net特性类Description了解下

namespace System.ComponentModel{ ???// 摘要: ???// ????指定属性或事件的说明。 ???[AttributeUsage(AttributeTargets.All)] ???public class DescriptionAttribute : Attribute ???{ ???????// 摘要: ???????// ????指定 System.ComponentModel.DescriptionAttribute 的默认值，即空字符串 ("")。此 static 字段是只读的。 ???????public static readonly DescriptionAttribute Default; ???????// 摘要: ???????// ????不带参数初始化 System.ComponentModel.DescriptionAttribute 类的新实例。 ???????public DescriptionAttribute(); ???????// ???????// 摘要: ???????// ????初始化 System.ComponentModel.DescriptionAttribute 类的新实例并带有说明。 ???????// ???????// 参数: ???????// ??description: ???????// ????说明文本。 ???????[TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")] ???????public DescriptionAttribute(string description); ???????// 摘要: ???????// ????获取存储在此特性中的说明。 ???????// ???????// 返回结果: ???????// ????存储在此特性中的说明。 ???????public virtual string Description { get; } ???????// ???????// 摘要: ???????// ????获取或设置作为说明存储的字符串。 ???????// ???????// 返回结果: ???????// ????作为说明存储的字符串。默认值为空字符串 ("")。 ???????protected string DescriptionValue { get; set; } ???????// 摘要: ???????// ????返回给定对象的值是否等于当前的 System.ComponentModel.DescriptionAttribute。 ???????// ???????// 参数: ???????// ??obj: ???????// ????要进行值的相等性测试的对象。 ???????// ???????// 返回结果: ???????// ????如果给定对象的值等于当前对象的值，则为 true；否则为 false。 ???????public override bool Equals(object obj); ???????public override int GetHashCode(); ???????// ???????// 摘要: ???????// ????返回一个值，该值指示这是否为默认 System.ComponentModel.DescriptionAttribute 实例。 ???????// ???????// 返回结果: ???????// ????如果这是默认 System.ComponentModel.DescriptionAttribute 实例，则为 true；否则为 false。 ???????public override bool IsDefaultAttribute(); ???}}

public class Person{ ???[Description("姓名")] ???public string Name { get; set; } ???[Description("性别")] ???public int Sex { get; set; }}

public class ReflectionHelper<T> where T : new(){ ???/// <summary> ???/// 获取特性信息 ???/// </summary> ???/// <param name="t"></param> ???/// <returns></returns> ???public static List<PropertityFieldInfo> GetPropertiyInfo() ???{ ???????List<PropertityFieldInfo> listRtn = new List<PropertityFieldInfo>(); ???????Dictionary<int, string> dicPropertiy = new Dictionary<int, string>(); ???????Dictionary<int, Type> dicFiled = new Dictionary<int, Type>(); ???????Dictionary<int, string> dicFiledName = new Dictionary<int, string>(); ???????T obj = new T(); ???????var pindex = 0; ???????var properties = obj.GetType().GetProperties(); ???????var files = obj.GetType().GetFields(BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public); ???????foreach (var p in properties) ???????{ ???????????var v = (DescriptionAttribute[])p.GetCustomAttributes(typeof(DescriptionAttribute), false); ???????????var desc = v[0].Description; ???????????dicFiledName.Add(pindex, p.Name); ???????????dicPropertiy.Add(pindex, desc); ???????????pindex++; ???????} ???????var findex = 0; ???????foreach (var f in files) ???????{ ???????????var fieldType = f.FieldType; ???????????dicFiled.Add(findex, fieldType); ???????????findex++; ???????} ???????foreach (KeyValuePair<int, string> kv in dicPropertiy) ???????{ ???????????PropertityFieldInfo m = new PropertityFieldInfo(); ???????????m.Name = dicFiledName[kv.Key]; ???????????m.Desc = dicPropertiy[kv.Key]; ???????????m.Type = dicFiled[kv.Key]; ???????????listRtn.Add(m); ???????} ???????return listRtn; ???} ???/// <summary> ???/// 获取所有列名描述 ???/// </summary> ???/// <returns></returns> ???public static List<string> GetPropertiyDescInfo() ???{ ???????List<string> list = new List<string>(); ???????var propertiyInfos = GetPropertiyInfo(); ???????foreach (var item in propertiyInfos) ???????{ ???????????list.Add(item.Desc); ???????} ???????return list; ???}}public class PropertityFieldInfo{ ???public string Name { get; set; } ???public string Desc { get; set; } ???public Type Type { get; set; }}

 ?class Program ???{ ???????static void Main(string[] args) ???????{ ???????????var dic = ReflectionHelper<Person>.GetPropertiyInfo(); ???????????foreach (var kv in dic) ???????????{ ???????????????Console.WriteLine(kv.Name); ???????????????Console.WriteLine(kv.Type); ???????????????Console.WriteLine(kv.Desc); ???????????} ???????????Console.Read(); ???????} ???}