我正在尝试为学校项目制作 C# 中的客户端-服务器应用程序我的问题是一个类可以序列化并通过套接字发送，而另一个不是，我无法弄清楚。
Employee 类（以及 Bonus）正在被序列化，但是当我尝试将一个 Transfer 实例传递给格式化程序时
formatter.Serialize(stream, transferObj);
它抛出异常：NotSupportedException 并带有消息：内存流不可扩展。
发送到服务器（）
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
System.Net.IPAddress ipAdd = System.Net.IPAddress.Parse("127.0.0.1");
System.Net.IPEndPoint remoteEP = new IPEndPoint(ipAdd, 6666);
socket.Connect("127.0.0.1", 6666);
Transfer t = new Transfer();
Employee e = new Employee();
Bonus b = new Bonus(); b.setAmmount(234); b.setDescription("xxxx");
e.getBonuses().Add(b);
byte[] buffer = new byte[1000];
System.Console.WriteLine("client started");
IFormatter formatter = new BinaryFormatter();
Stream stream = new MemoryStream(buffer);
formatter.Serialize(stream, e);
// Employee and Bonus are serialized but not Transfer
stream.Flush();
socket.Send(buffer,buffer.Length,0);
员工类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Permissions;
using System.Runtime.Serialization;
namespace Entity
{
[Serializable]
public class Employee : ISerializable
{
private int id;
private long version;
private String username;
private String password;
private String role;
private String name;
private String surname;
private long salary;
private DateTime experience;
private DateTime birthDate;
private String sex;
private List<Bonus> bonuses;
public Employee() {
bonuses = new List<Bonus>();
}
protected Employee(SerializationInfo info, StreamingContext context)
{
id = info.GetInt32("id");
version = info.GetInt32("version");
username = info.GetString("username");
password = info.GetString("password");
role = info.GetString("role");
name = info.GetString("name");
surname = info.GetString("surname");
salary = info.GetInt32("salary");
experience = (DateTime) info.GetValue("exp", typeof(DateTime));
birthDate = (DateTime)info.GetValue("birth", typeof(DateTime));
sex = info.GetString("sex");
bonuses = (List<Bonus>) info.GetValue("bonuses", typeof(List<Bonus>));
}
public int getId()
{
return id;
}
public void setId(int id)
{
this.id = id;
}
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
public String getSurname()
{
return surname;
}
public void setSurname(String surname)
{
this.surname = surname;
}
public long getSalary()
{
return salary;
}
public void setSalary(long salary)
{
this.salary = salary;
}
public DateTime getExperience()
{
return experience;
}
public void setExperience(DateTime experience)
{
this.experience = experience;
}
public DateTime getBirthDate()
{
return birthDate;
}
public void setBirthDate(DateTime birthDate)
{
this.birthDate = birthDate;
}
public List<Bonus> getBonuses()
{
return bonuses;
}
public void setBonuses(List<Bonus> bonuses)
{
this.bonuses = bonuses;
}
public override string ToString()
{
return name + " " + surname;
}
public override int GetHashCode()
{
int prime = 31;
int result = 1;
result = prime * result + id;
return result;
}
public override bool Equals(System.Object obj)
{
// If parameter is null return false.
if (obj == null)
{
return false;
}
// If parameter cannot be cast to Point return false.
Employee p = obj as Employee;
if ((System.Object)p == null)
{
return false;
}
// Return true if the fields match:
return id == p.id;
}
public void setSex(String sex)
{
this.sex = sex;
}
public String getSex()
{
return sex;
}
public long getVersion()
{
return version;
}
public void setVersion(long version)
{
this.version = version;
}
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public String getPassword()
{
return password;
}
public void setPassword(String password)
{
this.password = password;
}
public String getRole()
{
return role;
}
public void setRole(String role)
{
this.role = role;
}
#region ISerializable Members
[SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter = true)]
void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
{
info.AddValue("id", id);
info.AddValue("version", version);
info.AddValue("username", username);
info.AddValue("password", password);
info.AddValue("role", role);
info.AddValue("name", name);
info.AddValue("surname", surname);
info.AddValue("salary", salary);
info.AddValue("exp", experience);
info.AddValue("birth", birthDate);
info.AddValue("sex", sex);
info.AddValue("bonuses", bonuses);
}
#endregion
}
}
转学班
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Permissions;
using System.Runtime.Serialization;
namespace Entity
{
[Serializable]
public class Transfer : ISerializable
{
private Employee employee;
private String method;
private String message;
private List<Employee> queriedEmployees;
public Transfer() {
queriedEmployees = new List<Employee>();
}
protected Transfer(SerializationInfo info, StreamingContext context)
{
employee = (Employee) info.GetValue("employee", typeof(Employee) );
method = info.GetString("method");
message = info.GetString("message");
queriedEmployees = (List<Employee>) info.GetValue("qe", typeof(List<Employee>));
}
public Employee getEmployee()
{
return employee;
}
public String getMethod()
{
return method;
}
public String getMessage()
{
return message;
}
public List<Employee> getQueriedEmployees()
{
return queriedEmployees;
}
public void setEmployee(Employee e)
{
employee = e;
}
public void setMessage(String mes)
{
message = mes;
}
public void setMethod(String meth)
{
method = meth;
}
public void setQueriedEmployees(List<Employee> elist)
{
queriedEmployees = elist;
}
#region ISerializable Members
[SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter = true)]
void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
{
info.AddValue("employee", employee);
info.AddValue("method", method);
info.AddValue("message", message);
info.AddValue("qe", queriedEmployees);
}
#endregion
}
}