SerializationInfo Classe

Definição

Armazena todos os dados necessários para serializar ou desserializar um objeto.Stores all the data needed to serialize or deserialize an object. Essa classe não pode ser herdada.This class cannot be inherited.

public ref class SerializationInfo sealed
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class SerializationInfo
type SerializationInfo = class
Public NotInheritable Class SerializationInfo
Herança
SerializationInfo
Atributos

Exemplos

O exemplo de código a seguir SerializationInfo demonstra o para serialização personalizada e desserialização de vários valores.The following code example demonstrates the SerializationInfo for custom serialization and deserialization of various values.

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;
}
using System;
using System.Text;
using System.IO;
// Add references to Soap and Binary formatters.
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization.Formatters.Soap ;
using System.Runtime.Serialization;


[Serializable]
public class MyItemType : ISerializable
{
    public MyItemType()
    {
        // Empty constructor required to compile.
    }

    // The value to serialize.
    private string myProperty_value;

    public string MyProperty
    {
        get { return myProperty_value; }
        set { myProperty_value = value; }
    }
        
    // Implement this method to serialize data. The method is called 
    // on serialization.
    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
        // Use the AddValue method to specify serialized values.
        info.AddValue("props", myProperty_value, typeof(string));

    }

    // The special constructor is used to deserialize values.
    public MyItemType(SerializationInfo info, StreamingContext context)
    {
        // Reset the property value using the GetValue method.
        myProperty_value = (string) info.GetValue("props", typeof(string));
    }
}

// This is a console application. 
public static class Test
{
    static void Main()
    {
        // This is the name of the file holding the data. You can use any file extension you like.
        string fileName = "dataStuff.myData";

        // Use a BinaryFormatter or SoapFormatter.
        IFormatter formatter = new BinaryFormatter();
        //IFormatter formatter = new SoapFormatter();
            
        Test.SerializeItem(fileName, formatter); // Serialize an instance of the class.
        Test.DeserializeItem(fileName, formatter); // Deserialize the instance.
        Console.WriteLine("Done");
        Console.ReadLine();
    }

    public static void SerializeItem(string fileName, IFormatter formatter)
    {
        // Create an instance of the type and serialize it.
        MyItemType t = new MyItemType();
        t.MyProperty = "Hello World";

        FileStream s = new FileStream(fileName , FileMode.Create);
        formatter.Serialize(s, t);            
        s.Close();
    }


    public static void DeserializeItem(string fileName, IFormatter formatter)
    {
        FileStream s = new FileStream(fileName, FileMode.Open);
        MyItemType t = (MyItemType)formatter.Deserialize(s);
        Console.WriteLine(t.MyProperty);            
    }       
}
Imports System.Text
Imports System.IO

' Add references to Soap and Binary formatters.
Imports System.Runtime.Serialization.Formatters.Binary
Imports System.Runtime.Serialization.Formatters.Soap
Imports System.Runtime.Serialization


<Serializable()> _
Public Class MyItemType
    Implements ISerializable
    ' Empty constructor required to compile.
    Public Sub New()
    End Sub

    ' The value to serialize.
    Private myProperty_value As String

    Public Property MyProperty() As String
        Get
            Return myProperty_value
        End Get
        Set(value As String)
            myProperty_value = value
        End Set
    End Property

    ' Implement this method to serialize data. The method is called 
    ' on serialization.
    Public Sub GetObjectData(info As SerializationInfo, context As StreamingContext) Implements ISerializable.GetObjectData
        ' Use the AddValue method to specify serialized values.
        info.AddValue("props", myProperty_value, GetType(String))

    End Sub

    ' The special constructor is used to deserialize values.
    Public Sub New(info As SerializationInfo, context As StreamingContext)
        ' Reset the property value using the GetValue method.
        myProperty_value = DirectCast(info.GetValue("props", GetType(String)), String)
    End Sub
End Class

' This is a console application. 
Public Class Test


    Public Shared Sub Main()
        ' This is the name of the file holding the data. You can use any file extension you like.
        Dim fileName As String = "dataStuff.myData"

        ' Use a BinaryFormatter or SoapFormatter.
        Dim formatter As IFormatter = New BinaryFormatter()
        ' Dim formatter As IFormatter = New SoapFormatter()

        Test.SerializeItem(fileName, formatter)
        ' Serialize an instance of the class.
        Test.DeserializeItem(fileName, formatter)
        ' Deserialize the instance.
        Console.WriteLine("Done")
        Console.ReadLine()
    End Sub

    Public Shared Sub SerializeItem(fileName As String, formatter As IFormatter)
        ' Create an instance of the type and serialize it.
        Dim myType As New MyItemType()
        myType.MyProperty = "Hello World"

        Dim fs As New FileStream(fileName, FileMode.Create)
        formatter.Serialize(fs, myType)
        fs.Close()
    End Sub


    Public Shared Sub DeserializeItem(fileName As String, formatter As IFormatter)
        Dim fs As New FileStream(fileName, FileMode.Open)

        Dim myType As MyItemType = DirectCast(formatter.Deserialize(fs), MyItemType)
        Console.WriteLine(myType.MyProperty)
    End Sub
End Class

Comentários

Essa classe é usada por objetos com comportamento de serialização personalizado.This class is used by objects with custom serialization behavior. O GetObjectData método ISerializable em ouISerializationSurrogate popula oSerializationInfo repositório com o nome, tipo e valor de cada informação que ele deseja serializar.The GetObjectData method on either ISerializable or ISerializationSurrogate populates the SerializationInfo store with the name, type, and value of each piece of information it wants to serialize. Durante a desserialização, a função apropriada pode extrair essas informações.During deserialization, the appropriate function can extract this information.

Os objetos são adicionados ao SerializationInfo repositório no momento da serialização usando AddValue os SerializationInfo métodos e extraídos da loja na desserialização usando GetValue os métodos.Objects are added to the SerializationInfo store at serialization time using the AddValue methods and extracted from the SerializationInfo store at deserialization using the GetValue methods.

Para obter mais informações sobre como personalizar a serialização, consulte serialização personalizada.For more information about customizing serialization, see Custom Serialization.

Construtores

SerializationInfo(Type, IFormatterConverter)

Cria uma nova instância da classe SerializationInfo.Creates a new instance of the SerializationInfo class.

SerializationInfo(Type, IFormatterConverter, Boolean)

Inicializa uma nova instância da classe SerializationInfo.Initializes a new instance of the SerializationInfo class.

Propriedades

AssemblyName

Obtém ou define o nome do assembly do tipo a ser serializado durante a serialização somente.Gets or sets the assembly name of the type to serialize during serialization only.

FullTypeName

Obtém ou define o nome completo do Type a ser serializado.Gets or sets the full name of the Type to serialize.

IsAssemblyNameSetExplicit

Obtém se o nome do assembly foi explicitamente definido.Gets whether the assembly name has been explicitly set.

IsFullTypeNameSetExplicit

Obtém se o nome completo do tipo foi explicitamente definido.Gets whether the full type name has been explicitly set.

MemberCount

Obtém o número de membros que foram adicionados ao repositório SerializationInfo.Gets the number of members that have been added to the SerializationInfo store.

ObjectType

Retorna o tipo do objeto a ser serializado.Returns the type of the object to be serialized.

Métodos

AddValue(String, Boolean)

Adiciona um valor booliano ao repositório SerializationInfo.Adds a Boolean value into the SerializationInfo store.

AddValue(String, Byte)

Adiciona um valor inteiro sem sinal de 8 bits ao repositório SerializationInfo.Adds an 8-bit unsigned integer value into the SerializationInfo store.

AddValue(String, Char)

Adiciona um valor de caractere Unicode ao repositório SerializationInfo.Adds a Unicode character value into the SerializationInfo store.

AddValue(String, DateTime)

Adiciona um valor DateTime ao repositório SerializationInfo.Adds a DateTime value into the SerializationInfo store.

AddValue(String, Decimal)

Adiciona um valor decimal ao repositório SerializationInfo.Adds a decimal value into the SerializationInfo store.

AddValue(String, Double)

Adiciona um valor de ponto flutuante de precisão dupla ao repositório SerializationInfo.Adds a double-precision floating-point value into the SerializationInfo store.

AddValue(String, Int16)

Adiciona um valor inteiro com sinal de 16 bits ao repositório SerializationInfo.Adds a 16-bit signed integer value into the SerializationInfo store.

AddValue(String, Int32)

Adiciona um valor inteiro com sinal de 32 bits ao repositório SerializationInfo.Adds a 32-bit signed integer value into the SerializationInfo store.

AddValue(String, Int64)

Adiciona um valor inteiro com sinal de 64 bits ao repositório SerializationInfo.Adds a 64-bit signed integer value into the SerializationInfo store.

AddValue(String, Object)

Adiciona o objeto especificado ao repositório SerializationInfo, no qual ele é associado a um nome especificado.Adds the specified object into the SerializationInfo store, where it is associated with a specified name.

AddValue(String, Object, Type)

Adiciona um valor ao repositório SerializationInfo, em que value é associado ao name e é serializado como sendo do Typetype.Adds a value into the SerializationInfo store, where value is associated with name and is serialized as being of Typetype.

AddValue(String, SByte)

Adiciona um valor inteiro com sinal de 8 bits ao repositório SerializationInfo.Adds an 8-bit signed integer value into the SerializationInfo store.

AddValue(String, Single)

Adiciona um valor de ponto flutuante de precisão simples ao repositório SerializationInfo.Adds a single-precision floating-point value into the SerializationInfo store.

AddValue(String, UInt16)

Adiciona um valor inteiro sem sinal de 16 bits ao repositório SerializationInfo.Adds a 16-bit unsigned integer value into the SerializationInfo store.

AddValue(String, UInt32)

Adiciona um valor inteiro sem sinal de 32 bits ao repositório SerializationInfo.Adds a 32-bit unsigned integer value into the SerializationInfo store.

AddValue(String, UInt64)

Adiciona um valor inteiro sem sinal de 64 bits ao repositório SerializationInfo.Adds a 64-bit unsigned integer value into the SerializationInfo store.

Equals(Object)

Determina se o objeto especificado é igual ao objeto atual.Determines whether the specified object is equal to the current object.

(Herdado de Object)
GetBoolean(String)

Recupera um valor booliano do repositório do SerializationInfo.Retrieves a Boolean value from the SerializationInfo store.

GetByte(String)

Recupera um valor inteiro sem sinal de 8 bits do repositório SerializationInfo.Retrieves an 8-bit unsigned integer value from the SerializationInfo store.

GetChar(String)

Recupera um valor de caractere Unicode do repositório SerializationInfo.Retrieves a Unicode character value from the SerializationInfo store.

GetDateTime(String)

Recupera um valor DateTime do repositório SerializationInfo.Retrieves a DateTime value from the SerializationInfo store.

GetDecimal(String)

Recupera um valor decimal do repositório SerializationInfo.Retrieves a decimal value from the SerializationInfo store.

GetDouble(String)

Recupera um valor de ponto flutuante de precisão dupla do repositório SerializationInfo.Retrieves a double-precision floating-point value from the SerializationInfo store.

GetEnumerator()

Retorna um SerializationInfoEnumerator usado para iterar por meio dos pares nome-valor no repositório SerializationInfo.Returns a SerializationInfoEnumerator used to iterate through the name-value pairs in the SerializationInfo store.

GetHashCode()

Serve como a função de hash padrão.Serves as the default hash function.

(Herdado de Object)
GetInt16(String)

Recupera um valor inteiro com sinal de 16 bits do repositório SerializationInfo.Retrieves a 16-bit signed integer value from the SerializationInfo store.

GetInt32(String)

Recupera um valor inteiro com sinal de 32 bits do repositório SerializationInfo.Retrieves a 32-bit signed integer value from the SerializationInfo store.

GetInt64(String)

Recupera um valor inteiro com sinal de 64 bits do repositório SerializationInfo.Retrieves a 64-bit signed integer value from the SerializationInfo store.

GetSByte(String)

Recupera um valor inteiro com sinal de 8 bits do repositório SerializationInfo.Retrieves an 8-bit signed integer value from the SerializationInfo store.

GetSingle(String)

Recupera um valor de ponto flutuante de precisão simples do repositório SerializationInfo.Retrieves a single-precision floating-point value from the SerializationInfo store.

GetString(String)

Recupera um valor String do repositório SerializationInfo.Retrieves a String value from the SerializationInfo store.

GetType()

Obtém o Type da instância atual.Gets the Type of the current instance.

(Herdado de Object)
GetUInt16(String)

Recupera um valor inteiro sem sinal de 16 bits do repositório SerializationInfo.Retrieves a 16-bit unsigned integer value from the SerializationInfo store.

GetUInt32(String)

Recupera um valor inteiro sem sinal de 32 bits do repositório SerializationInfo.Retrieves a 32-bit unsigned integer value from the SerializationInfo store.

GetUInt64(String)

Recupera um valor inteiro sem sinal de 64 bits do repositório SerializationInfo.Retrieves a 64-bit unsigned integer value from the SerializationInfo store.

GetValue(String, Type)

Recupera um valor do repositório do SerializationInfo.Retrieves a value from the SerializationInfo store.

MemberwiseClone()

Cria uma cópia superficial do Object atual.Creates a shallow copy of the current Object.

(Herdado de Object)
SetType(Type)

Define o Type do objeto a ser serializado.Sets the Type of the object to serialize.

ToString()

Retorna uma cadeia de caracteres que representa o objeto atual.Returns a string that represents the current object.

(Herdado de Object)

Aplica-se a

Veja também