BinaryFormatter
BinaryFormatter详细介绍点击这里
以二进制格式序列化和反序列化对象或连接对象的整个图形。
以下样例实现了对象的序列化，反序列化，深拷贝
using System
;
using System
.IO
;
using System
.Collections
.Generic
;
using System
.Runtime
.Serialization
.Formatters
.Binary
;
namespace BinaryFormatterExample
{
class Program
{
static void Main(string[] args
)
{
List
<Student
> students
= new List<Student>() {
new Student() {Id
=1,Name
="Tom",Age
=5,Desc
="desc" },
new Student() {Id
=2,Name
="Jack",Age
=2,Desc
="desc" },
new Student() {Id
=3,Name
="Harry",Age
=10 ,Desc
="desc"}
};
Save
<List
<Student
>>(students
, "students.bin");
List
<Student
> rStudents
= Read
<List
<Student
>>("students.bin");
List
<Student
> copyStudents
= DeepCopy
<List
<Student
>>(rStudents
);
bool result
= rStudents
.Equals(copyStudents
);
}
public static T
DeepCopy<T>(T obj
)
{
object desObj
;
using (MemoryStream ms
= new MemoryStream())
{
BinaryFormatter bf
= new BinaryFormatter();
bf
.Serialize(ms
, obj
);
ms
.Seek(0, SeekOrigin
.Begin
);
desObj
= bf
.Deserialize(ms
);
}
return (T
)desObj
;
}
public static void Save<T>(T obj
, string path
)
{
using (MemoryStream ms
= new MemoryStream())
{
BinaryFormatter bf
= new BinaryFormatter();
bf
.Serialize(ms
, obj
);
ms
.Seek(0, SeekOrigin
.Begin
);
using (FileStream file
= new FileStream(path
, FileMode
.Create
, System
.IO
.FileAccess
.Write
))
{
byte[] bytes
= new byte[ms
.Length
];
ms
.Read(bytes
, 0, (int)ms
.Length
);
file
.Write(bytes
, 0, bytes
.Length
);
}
}
}
public static T
Read<T>(string path
)
{
if (!File
.Exists(path
))
return default(T
);
object desObj
;
using (FileStream file
= new FileStream(path
, FileMode
.Open
, FileAccess
.Read
))
{
byte[] bytes
= new byte[file
.Length
];
file
.Read(bytes
, 0, (int)file
.Length
);
using (MemoryStream ms
= new MemoryStream())
{
ms
.Write(bytes
, 0, (int)file
.Length
);
ms
.Seek(0, SeekOrigin
.Begin
);
BinaryFormatter bf
= new BinaryFormatter();
desObj
= bf
.Deserialize(ms
);
}
}
return (T
)desObj
;
}
}
[Serializable]
class Student
{
private int id
;
private string name
;
private int age
;
[NonSerialized]
private string desc
;
public int Id
{ get => id
; set => id
= value; }
public string Name
{ get => name
; set => name
= value; }
public int Age
{ get => age
; set => age
= value; }
public string Desc
{ get => desc
; set => desc
= value; }
}
}
注意：要序列化的对象的类需要添加[Serializable]，不需要序列化的字段用[NonSerialized]表明
