SerializationInfo 클래스
개체의 serialization 또는 deserialization에 필요한 데이터를 모두 저장합니다. 이 클래스는 상속될 수 없습니다.
네임스페이스: System.Runtime.Serialization
어셈블리: mscorlib(mscorlib.dll)
구문
‘선언
<ComVisibleAttribute(True)> _
Public NotInheritable Class SerializationInfo
‘사용 방법
Dim instance As SerializationInfo
[ComVisibleAttribute(true)]
public sealed class SerializationInfo
[ComVisibleAttribute(true)]
public ref class SerializationInfo sealed
/** @attribute ComVisibleAttribute(true) */
public final class SerializationInfo
ComVisibleAttribute(true)
public final class SerializationInfo
설명
이 클래스는 사용자 지정 serialization 동작에서 개체에 의해 사용됩니다. ISerializable 또는 ISerializationSurrogate에 대한 GetObjectData 메서드는 serialize할 각 정보의 이름, 형식 및 값으로 SerializationInfo 저장소를 채웁니다. deserialization 도중에 적절한 함수를 사용하여 이 정보를 추출할 수 있습니다.
개체는 AddValue 메서드를 사용하여 serialization 도중에 SerializationInfo 저장소에 추가되며, GetValue 메서드를 사용하여 deserialization 도중에 SerializationInfo 저장소에서 추출됩니다.
사용자 지정 serialization에 대한 자세한 내용은 사용자 지정 Serialization을 참조하십시오.
예제
다음 코드 예제는 다양한 값에 대한 사용자 지정 serialization 및 deserialization의 SerializationInfo에 대해 설명합니다.
Imports System
Imports System.Web
Imports System.IO
Imports System.Collections
Imports System.Runtime.Serialization.Formatters.Binary
Imports System.Runtime.Serialization
Imports System.Security.Permissions
' There should be only one instance of this type per AppDomain.
<Serializable()> _
Public NotInheritable Class Singleton
Implements ISerializable
' This is the one instance of this type.
Private Shared ReadOnly theOneObject As New Singleton
' Here are the instance fields.
Public someString As String
Public someNumber As Int32
' Private constructor allowing this type to construct the Singleton.
Private Sub New()
' Do whatever is necessary to initialize the Singleton.
someString = "This is a string field"
someNumber = 123
End Sub
' A method returning a reference to the Singleton.
Public Shared Function GetSingleton() As Singleton
Return theOneObject
End Function
' A method called when serializing a Singleton.
<SecurityPermissionAttribute(SecurityAction.LinkDemand, _
Flags:=SecurityPermissionFlag.SerializationFormatter)> _
Private Sub GetObjectData(ByVal info As SerializationInfo, _
ByVal context As StreamingContext) _
Implements ISerializable.GetObjectData
' Instead of serializing this object, we will
' serialize a SingletonSerializationHelp instead.
info.SetType(GetType(SingletonSerializationHelper))
' No other values need to be added.
End Sub
' Note: ISerializable's special constructor is not necessary
' because it is never called.
End Class
<Serializable()> _
Friend NotInheritable Class SingletonSerializationHelper
Implements IObjectReference
' This object has no fields (although it could).
' GetRealObject is called after this object is deserialized.
Public Function GetRealObject(ByVal context As StreamingContext) As Object Implements IObjectReference.GetRealObject
' When deserialiing this object, return a reference to
' the Singleton object instead.
Return Singleton.GetSingleton()
End Function
End Class
Class App
<STAThread()> Shared Sub Main()
Run()
End Sub
Shared Sub Run()
Dim fs As New FileStream("DataFile.dat", FileMode.Create)
Try
' Construct a BinaryFormatter and use it
' to serialize the data to the stream.
Dim formatter As New BinaryFormatter
' Create an array with multiple elements refering to
' the one Singleton object.
Dim a1() As Singleton = {Singleton.GetSingleton(), Singleton.GetSingleton()}
' This displays "True".
Console.WriteLine("Do both array elements refer to the same object? " & _
Object.ReferenceEquals(a1(0), a1(1)))
' Serialize the array elements.
formatter.Serialize(fs, a1)
' Deserialize the array elements.
fs.Position = 0
Dim a2() As Singleton = DirectCast(formatter.Deserialize(fs), Singleton())
' This displays "True".
Console.WriteLine("Do both array elements refer to the same object? " & _
Object.ReferenceEquals(a2(0), a2(1)))
' This displays "True".
Console.WriteLine("Do all array elements refer to the same object? " & _
Object.ReferenceEquals(a1(0), a2(0)))
Catch e As SerializationException
Console.WriteLine("Failed to serialize. Reason: " & e.Message)
Throw
Finally
fs.Close()
End Try
End Sub
End Class
using System;
using System.Web;
using System.IO;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;
using System.Security.Permissions;
// There should be only one instance of this type per AppDomain.
[Serializable]
public sealed class Singleton : ISerializable
{
// This is the one instance of this type.
private static readonly Singleton theOneObject = new Singleton();
// Here are the instance fields.
private string someString_value;
private Int32 someNumber_value;
public string SomeString
{
get{return someString_value;}
set{someString_value = value;}
}
public Int32 SomeNumber
{
get{return someNumber_value;}
set{someNumber_value = value;}
}
// Private constructor allowing this type to construct the Singleton.
private Singleton()
{
// Do whatever is necessary to initialize the Singleton.
someString_value = "This is a string field";
someNumber_value = 123;
}
// A method returning a reference to the Singleton.
public static Singleton GetSingleton()
{
return theOneObject;
}
// A method called when serializing a Singleton.
[SecurityPermissionAttribute(SecurityAction.LinkDemand,
Flags=SecurityPermissionFlag.SerializationFormatter)]
void ISerializable.GetObjectData(
SerializationInfo info, StreamingContext context)
{
// Instead of serializing this object,
// serialize a SingletonSerializationHelp instead.
info.SetType(typeof(SingletonSerializationHelper));
// No other values need to be added.
}
// Note: ISerializable's special constructor is not necessary
// because it is never called.
}
[Serializable]
internal sealed class SingletonSerializationHelper : IObjectReference
{
// This object has no fields (although it could).
// GetRealObject is called after this object is deserialized.
public Object GetRealObject(StreamingContext context)
{
// When deserialiing this object, return a reference to
// the Singleton object instead.
return Singleton.GetSingleton();
}
}
class App
{
[STAThread]
static void Main()
{
FileStream fs = new FileStream("DataFile.dat", FileMode.Create);
try
{
// Construct a BinaryFormatter and use it
// to serialize the data to the stream.
BinaryFormatter formatter = new BinaryFormatter();
// Create an array with multiple elements refering to
// the one Singleton object.
Singleton[] a1 = { Singleton.GetSingleton(), Singleton.GetSingleton() };
// This displays "True".
Console.WriteLine(
"Do both array elements refer to the same object? " +
(a1[0] == a1[1]));
// Serialize the array elements.
formatter.Serialize(fs, a1);
// Deserialize the array elements.
fs.Position = 0;
Singleton[] a2 = (Singleton[]) formatter.Deserialize(fs);
// This displays "True".
Console.WriteLine("Do both array elements refer to the same object? "
+ (a2[0] == a2[1]));
// This displays "True".
Console.WriteLine("Do all array elements refer to the same object? "
+ (a1[0] == a2[0]));
}
catch (SerializationException e)
{
Console.WriteLine("Failed to serialize. Reason: " + e.Message);
throw;
}
finally
{
fs.Close();
}
}
}
using namespace System;
using namespace System::IO;
using namespace System::Collections;
using namespace System::Runtime::Serialization::Formatters::Binary;
using namespace System::Runtime::Serialization;
ref class SingletonSerializationHelper;
// There should be only one instance of this type per AppDomain.
[Serializable]
public ref class Singleton sealed: public ISerializable
{
private:
// This is the one instance of this type.
static Singleton^ theOneObject = gcnew Singleton;
public:
// Here are the instance fields.
String^ someString;
Int32 someNumber;
private:
// Private constructor allowing this type to construct the singleton.
Singleton()
{
// Do whatever is necessary to initialize the singleton.
someString = "This is a String* field";
someNumber = 123;
}
public:
// A method returning a reference to the singleton.
static Singleton^ GetSingleton()
{
return theOneObject;
}
// A method called when serializing a Singleton.
[System::Security::Permissions::SecurityPermissionAttribute
(System::Security::Permissions::SecurityAction::LinkDemand,
Flags=System::Security::Permissions::SecurityPermissionFlag::SerializationFormatter)]
virtual void GetObjectData( SerializationInfo^ info, StreamingContext context )
{
// Instead of serializing this Object*, we will
// serialize a SingletonSerializationHelp instead.
info->SetType( SingletonSerializationHelper::typeid );
// No other values need to be added.
}
// NOTE: ISerializable*'s special constructor is NOT necessary
// because it's never called
};
[Serializable]
private ref class SingletonSerializationHelper sealed: public IObjectReference
{
public:
// This Object* has no fields (although it could).
// GetRealObject is called after this Object* is deserialized
virtual Object^ GetRealObject( StreamingContext context )
{
// When deserialiing this Object*, return a reference to
// the singleton Object* instead.
return Singleton::GetSingleton();
}
};
[STAThread]
int main()
{
FileStream^ fs = gcnew FileStream( "DataFile.dat",FileMode::Create );
try
{
// Construct a BinaryFormatter and use it
// to serialize the data to the stream.
BinaryFormatter^ formatter = gcnew BinaryFormatter;
// Create an array with multiple elements refering to
// the one Singleton Object*.
array<Singleton^>^a1 = {Singleton::GetSingleton(),Singleton::GetSingleton()};
// This displays S"True".
Console::WriteLine( "Do both array elements refer to the same Object? {0}", (a1[ 0 ] == a1[ 1 ]) );
// Serialize the array elements.
formatter->Serialize( fs, a1 );
// Deserialize the array elements.
fs->Position = 0;
array<Singleton^>^a2 = (array<Singleton^>^)formatter->Deserialize( fs );
// This displays S"True".
Console::WriteLine( "Do both array elements refer to the same Object? {0}", (a2[ 0 ] == a2[ 1 ]) );
// This displays S"True".
Console::WriteLine( "Do all array elements refer to the same Object? {0}", (a1[ 0 ] == a2[ 0 ]) );
}
catch ( SerializationException^ e )
{
Console::WriteLine( "Failed to serialize. Reason: {0}", e->Message );
throw;
}
finally
{
fs->Close();
}
return 0;
}
상속 계층 구조
System.Object
System.Runtime.Serialization.SerializationInfo
스레드로부터의 안전성
이 형식의 모든 public static(Visual Basic의 경우 Shared) 멤버는 스레드로부터 안전합니다. 인터페이스 멤버는 스레드로부터 안전하지 않습니다.
플랫폼
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework에서 모든 플래폼의 모든 버전을 지원하지는 않습니다. 지원되는 버전의 목록은 시스템 요구 사항을 참조하십시오.
버전 정보
.NET Framework
2.0, 1.1, 1.0에서 지원
참고 항목
참조
SerializationInfo 멤버
System.Runtime.Serialization 네임스페이스
ISerializable 인터페이스