C# PropertyInfo类案例详解

 public class People { public string name { get; set; } public int age { get; set; } public DateTime birthday { get; set; } public bool isActive { get; set; } public List
 address{get;set;} } public class Address { public string country { get; set; } public string province { get; set; } public string city { get; set; } } class Program { static void Main(string[] args) { List
 address = new List
() { new Address(){ country="china", province="anHui", city="bengBu", }, new Address(){ country="china", city="shangHai", }, }; People people = new People() { name="wangqilong", age=23, birthday=Convert.ToDateTime("2018-09-15"), isActive=true, address=address }; string str = method(people); } public static string method(Object obj) { string str = ""; Type postType = obj.GetType(); PropertyInfo[] postTypeInfos = postType.GetProperties(); //返回为当前 Type 的所有公共属性,PropertyInfo[] PropertyInfo 的所有公共属性的 Type 对象数组 foreach (PropertyInfo p in postTypeInfos) { if (p.PropertyType.FullName == typeof(DateTime).FullName) { DateTime pValue = (DateTime)p.GetValue(obj, null); if (pValue != null && pValue != DateTime.MinValue)    //dateTime类型申明时默认值为最小值 { str += p.Name + ":" + pValue + ";"; } } else if (p.PropertyType.FullName == typeof(Int32).FullName) { int pValue = (int)p.GetValue(obj, null); if (pValue != 0)                                //int类型申明时默认值为最小值0 { str += p.Name + ":" + pValue + ";"; } } else if (p.PropertyType.FullName == typeof(Boolean).FullName) { Object pValue = p.GetValue(obj, null); str += p.Name + ":" + pValue + ";"; } else if (p.PropertyType.FullName == typeof(String).FullName) { Object pValue = p.GetValue(obj, null); str += p.Name + ":" + pValue + ";"; } //如果传入的对象包含集合，集合中是另个对象 else if (p.PropertyType.FullName == typeof(List
).FullName) { List
 list = (List
)p.GetValue(obj, null); if (list != null) { foreach (Address address in list) { str += p.Name + ":" + address.country+","+address.province+","+address.city + ";"; } } } } return str; } }