关于C#的深拷贝的实现方式:
①反射
②反序列化
③表达式树
目前只讲解利用反射实现C#深拷贝的方法:
深拷贝工具类:
using System; using System.Collections.Generic; using System.Linq; using System.Reflection; using System.Text; namespace CopyDemo { public sealed class CopyTools { public static T DeepCopy<T>(T obj) { //如果是字符串或值类型则直接返回 if (obj is string || obj.GetType().IsValueType) return obj; object retval = Activator.CreateInstance(obj.GetType()); FieldInfo[] fields = obj.GetType().GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static); foreach (FieldInfo field in fields) { try { field.SetValue(retval, DeepCopy(field.GetValue(obj))); } catch { } } return (T)retval; } } }下面2个类用于测试:
宠物类->
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace CopyDemo { public sealed class Pet { public string Name { get; set; } } }人物类->
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace CopyDemo { public sealed class People { public string Name { set; get; } public Pet My_Pet { get; set; } } }测试代码:
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace CopyDemo { public class Program { static void Main(string[] args) { People A = new People() {My_Pet = new Pet()}; A.Name = "Aonaufly"; A.My_Pet.Name = "小白"; Console.WriteLine("================================================="); People _copyA = CopyTools.DeepCopy<People>(A); _copyA.Name = "Kayer"; _copyA.My_Pet.Name = "旺财"; Console.WriteLine("源 name : {0} , petName : {1}" , A.Name,A.My_Pet.Name); Console.WriteLine("Copy name : {0} , petName : {1}", _copyA.Name, _copyA.My_Pet.Name); Console.ReadKey(); } } }运行结果:
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