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【CSharp】比较两个对象是否相等

作者:炎锋 / 发布于2016/1/4/ 1526


	using System;
	using System.Collections.Generic;
	using System.Text;
	using System.Reflection;

	namespace ObjectCompare
	{
	 public class Person
	 {
	 public string Name { get; set; }
	 public int Age { get; set; }
	 }
	 static class Program
	 {
	 static void Main(string[] args)
	 {
	 CompareObjectTest();
	 }
	 /// <summary>
	 /// 测试方法
	 /// </summary>
	 public static void CompareObjectTest()
	 {
	 Person FirstPerson = new Person() { Name = "张三", Age = 20 };
	 Person SecondPerson = new Person() { Name = "张三", Age = 21 };
	 bool flag = FirstPerson.ToString().Equals(SecondPerson.ToString());
	 Console.WriteLine(flag);
	 bool actua = FirstPerson.CompareWith(SecondPerson);
	 Console.WriteLine(actua);
	 Console.Read();
	 }

	 /// <summary>
	 /// 将对象序列化为字符串
	 /// </summary>
	 /// <param name="obj"></param>
	 /// <returns></returns>
	 public static string Serialize(this object obj)
	 {
	 if (null == obj)
	 return string.Empty;
	 Type type = obj.GetType();
	 FieldInfo[] fields = type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance);
	 StringBuilder objString = new StringBuilder();
	 foreach (FieldInfo field in fields)
	 {
	 objString.Append(field.Name + ":");
	 object value = field.GetValue(obj); //取得字段的值
	 if (null != value)
	 {
	 Type filedType = value.GetType();
	 //判断该字段类型是否为类，且不是string类型
	 if (filedType.IsClass && "String" != filedType.Name)
	 objString.Append(Serialize(value));
	 objString.Append(value);
	 }
	 objString.Append(";");
	 }
	 return objString.ToString();
	 }

	 /// <summary>
	 /// 比较两个对象是否相等
	 /// </summary>
	 /// <param name="obj1"></param>
	 /// <param name="obj2"></param>
	 /// <returns></returns>
	 public static bool CompareWith(this object obj1, object obj2)
	 {
	 if (null == obj1 || null == obj2)
	 return false;
	 if (obj1.GetType() != obj2.GetType())
	 return false;
	 return obj1.Serialize().Equals(obj2.Serialize());
	 }
	 }
	}

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　对象是否相等　

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