1、序列化和反序列化的扩展方法如下：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Runtime.Serialization.Formatters.Binary;using System.IO;using System.Runtime.Serialization;public static class Extenstions    {        //序列化        public static byte[] SerializeToByte
     
      (this T o)        {            using (MemoryStream stream = new MemoryStream())            {                IFormatter formatter = new BinaryFormatter();                formatter.Serialize(stream, o);                byte[] buffer = stream.ToArray();                return buffer;            }        }        //反序列化        public static T ByteToDeserialize
      
       (this byte[] buffer)        {            using (MemoryStream stream = new MemoryStream(buffer))            {                IFormatter formatter = new BinaryFormatter();                stream.Seek(0, SeekOrigin.Begin);                return (T)formatter.Deserialize(stream);                           }        }    }
      
     

 2.为要序列化的类加上[Serializable]

[Serializable]    public class Tb    {          public string Id { get; set; }       public string Name { get; set; }    }

 3、Web Service 中序列化List

[WebMethod(Description = "")]        public byte[] GetTbList()        {           string sql = "select * from tb";            using (var conn = Database.GetConn())            {                List
     
       list = conn.Query
      
       (sql).ToList();                byte[] buffer = list.SerializeToByte();                 return buffer;            }        }
      
     

 4、调用Web Service并反序列化为List

private void BindData()        {            byte[] buffer = TestService.GetTbList(); //TestService为服务实例            List
     
       list = buffer.ByteToDeserialize
      
       
        >();            datagridview1.DataSource = list;                   }