• 利用反射实现序列化和反序列化


    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.IO;
    using System.Runtime.Serialization;
    using System.Runtime.Serialization.Formatters.Binary;
    using System.Xml.Serialization;
    using System.Diagnostics;
    using System.Reflection;
    using System.Xml;
    
    namespace ProtoBuf
    {
        class Program
        {
            static void Main(string[] args)
            {
                var list = InitData();
                TestSerialize(list);
                Console.Read();
            }  
    
            static void TestSerialize(List<Person> list)
            {
                //定义测试次数和统计时间
                int count = 20;
                double time1 = 0,time2=0;
               
                //测试序列化
                Stopwatch PS = new Stopwatch();
                for (int i = 0; i < count; i++)
                {
                    PS.Start();
                    Serializa(list);
                    PS.Stop();
                    time1 += PS.Elapsed.TotalMilliseconds;
                }
                Console.WriteLine("序列化20次平均用时" + time1/count);
    
                //测试反序列化
                Stopwatch dePS = new Stopwatch();
                for (int j = 0; j < count; j++)
                {
                    dePS.Start();
                    deSerializa(list);
                    dePS.Stop();
                    time2 += dePS.Elapsed.TotalMilliseconds;
                }
                Console.WriteLine("反序列化20次平均用时" + time2/count);    
            }
    
            private static List<Person> InitData()
            {
                List<Person> list = new List<Person>();
                for (var i = 0; i < 100; i++)       //i < 1024*100;
                {
                    var person = new Person
                    {
                        Sno = i,
                        Name = "Name" + i,
                        Age = 20 + i,
                        HomeTown = "HomeTown" + i,
                        Shool = "Shool" + i,
                        Country = "Country" + i,
                        Language = "Language" + i,
                        Professional = "professional" + i,
                        Study = "study" + i,
                        FatherName = "fatherName" + i,
                        MotherName = "motherName" + i
                    };
                    list.Add(person);
                }
                return list;
            }
          
            //序列化
            static void Serializa(List<Person> list)
            {
                string[] a = new string[1000*1000];
                object[] b = new object[1000*1000];
    
                //新建文件流处理
                FileStream fs = new FileStream(@"E:person.txt", FileMode.Create, FileAccess.Write, FileShare.None);
                StreamWriter sw = new StreamWriter(fs);
    
                //定义字典,利用反射获取类和属性
                IList<Dictionary<string, object>> Id = new List<Dictionary<string, object>>();
                foreach (Person person in list)
                {
                    PropertyInfo[] props = person.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly);
                    Dictionary<string,object> values = new Dictionary<string, object>();
                    foreach (PropertyInfo property in props)
                    {
                        values.Add(property.Name, property.GetValue(person, property.GetIndexParameters())); 
                        sw.WriteLine(property.Name);
                        sw.WriteLine(property.GetValue(person, property.GetIndexParameters()).ToString());
                    }
                    Id.Add(values);   
                }
                fs.Close();
                fs.Dispose();
            }
           
            //反序列化
            static void deSerializa(List<Person> list)
            {
                int j = 0;
                string[] a=new string[1000*1000];
    
                //新建流文件,读取数据
                FileStream fsRead = new FileStream(@"E:person.txt", FileMode.Open, FileAccess.Read, FileShare.None);
                StreamReader fsR=new StreamReader(fsRead);
                fsR.BaseStream.Seek(0, SeekOrigin.Begin);
                string str=fsR.ReadLine();
                while(str!=null)
                {
                    a[j] = str;
                    j++;
                    //Console.WriteLine("{0}", str);
                    str = fsR.ReadLine();
                }
    
                //新建person类
                List<Person> list2 = new List<Person>();
                for (var i = 0; i < 100; i++)       //i < 1024*100;
                {
                    var person = new Person
                    {
                        Sno =Convert.ToInt32(a[1+22*i]),
                        Name = a[3 + 22 * i],
                        Age = Convert.ToInt32(a[5 + 22 * i]),
                        HomeTown = a[7 + 22 * i],
                        Shool = a[9 + 22 * i],
                        Country = a[11 + 22 * i],
                        Language = a[13 + 22 * i],
                        Professional = a[15 + 2 * i],
                        Study = a[17 + 22 * i],
                        FatherName = a[19 + 22 * i],
                        MotherName = a[21 + 22 * i],
                    };
                    list.Add(person);
                }
                fsRead.Close();
                fsRead.Dispose();
            }
        }
    
        public class Person
        {
            public int Sno { get; set; }
            public string Name { get; set; }
            public int Age { get; set; }
            public string HomeTown { get; set; }
            public string Shool { get; set; }
            public string Country { get; set; }
            public string Language { get; set; }
            public string Professional { get; set; }
            public string Study { get; set; }
            public string FatherName { get; set; }
            public string MotherName { get; set; }
        }
    }
    
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  • 原文地址:https://www.cnblogs.com/Freedom0619/p/4135395.html
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