XmlSerializer.Deserialize Méthode

public:
 System::Object ^ Deserialize(System::IO::Stream ^ stream);

public object Deserialize (System.IO.Stream stream);

public object? Deserialize (System.IO.Stream stream);

member this.Deserialize : System.IO.Stream -> obj

Public Function Deserialize (stream As Stream) As Object

Paramètres

Retours

Object

Object en cours de désérialisation.

Exemples

L’exemple suivant désérialise un objet à l’aide d’un Stream objet.

#using <System.Xml.dll>
#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml::Serialization;

// This is the class that will be deserialized.
public ref class OrderedItem
{
public:

    [XmlElement(Namespace="http://www.cpandl.com")]
    String^ ItemName;

    [XmlElement(Namespace="http://www.cpandl.com")]
    String^ Description;

    [XmlElement(Namespace="http://www.cohowinery.com")]
    Decimal UnitPrice;

    [XmlElement(Namespace="http://www.cpandl.com")]
    int Quantity;

    [XmlElement(Namespace="http://www.cohowinery.com")]
    Decimal LineTotal;

    // A custom method used to calculate price per item.
    void Calculate()
    {
        LineTotal = UnitPrice * Quantity;
    }
};

void DeserializeObject(String^ filename)
{
    Console::WriteLine("Reading with Stream");

    // Create an instance of the XmlSerializer.
    XmlSerializer^ serializer = gcnew XmlSerializer(OrderedItem::typeid);

    // Declare an object variable of the type to be deserialized.
    OrderedItem^ i;
    
    // Reading the XML document requires a FileStream.
    Stream^ reader = gcnew FileStream(filename, FileMode::Open);

    try
    {
        // Call the Deserialize method to restore the object's state.
        i = dynamic_cast<OrderedItem^>(serializer->Deserialize(reader));
    }
    finally
    {
        delete reader;
    }

    // Write out the properties of the object.
    Console::Write("{0}\t{1}\t{2}\t{3}\t{4}", i->ItemName, i->Description, i->UnitPrice, i->Quantity, i->LineTotal);
}

int main()
{
    // Read a purchase order.
    DeserializeObject( "simple.xml" );
}

using System;
using System.IO;
using System.Xml.Serialization;

// This is the class that will be deserialized.
public class OrderedItem
{
    [XmlElement(Namespace = "http://www.cpandl.com")]
    public string ItemName;
    [XmlElement(Namespace = "http://www.cpandl.com")]
    public string Description;
    [XmlElement(Namespace="http://www.cohowinery.com")]
    public decimal UnitPrice;
    [XmlElement(Namespace = "http://www.cpandl.com")]
    public int Quantity;
    [XmlElement(Namespace="http://www.cohowinery.com")]
    public decimal LineTotal;
    // A custom method used to calculate price per item.
    public void Calculate()
    {
        LineTotal = UnitPrice * Quantity;
    }
}

public class Test
{
    public static void Main()
    {
        Test t = new Test();
        // Read a purchase order.
        t.DeserializeObject("simple.xml");
    }

    private void DeserializeObject(string filename)
    {
        Console.WriteLine("Reading with Stream");
        // Create an instance of the XmlSerializer.
        XmlSerializer serializer =
        new XmlSerializer(typeof(OrderedItem));

        // Declare an object variable of the type to be deserialized.
        OrderedItem i;

        using (Stream reader = new FileStream(filename, FileMode.Open))
        {
            // Call the Deserialize method to restore the object's state.
            i = (OrderedItem)serializer.Deserialize(reader);
        }

        // Write out the properties of the object.
        Console.Write(
        i.ItemName + "\t" +
        i.Description + "\t" +
        i.UnitPrice + "\t" +
        i.Quantity + "\t" +
        i.LineTotal);
    }
}

Imports System.IO
Imports System.Xml.Serialization

' This is the class that will be deserialized.
Public Class OrderedItem
    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public ItemName As String

    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public Description As String
    
    <XmlElement(Namespace := "http://www.cohowinery.com")> _
    Public UnitPrice As Decimal
    
    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public Quantity As Integer
    
    <XmlElement(Namespace := "http://www.cohowinery.com")> _
    Public LineTotal As Decimal
    
    'A custom method used to calculate price per item.
    Public Sub Calculate()
        LineTotal = UnitPrice * Quantity
    End Sub
End Class

Public Class Test
    
    Public Shared Sub Main()
        Dim t As New Test()
        ' Read a purchase order.
        t.DeserializeObject("simple.xml")
    End Sub
        
    Private Sub DeserializeObject(ByVal filename As String)
        Console.WriteLine("Reading with Stream")
        ' Create an instance of the XmlSerializer.
        Dim serializer As New XmlSerializer(GetType(OrderedItem))       
        
        ' Declare an object variable of the type to be deserialized.
        Dim i As OrderedItem

        Using reader As New Filestream(filename, FileMode.Open)

            ' Call the Deserialize method to restore the object's state.
            i = CType(serializer.Deserialize(reader), OrderedItem)
        End Using

        ' Write out the properties of the object.
        Console.Write(i.ItemName & ControlChars.Tab & _
                      i.Description & ControlChars.Tab & _
                      i.UnitPrice & ControlChars.Tab & _
                      i.Quantity & ControlChars.Tab & _
                      i.LineTotal)
    End Sub
End Class

<?xml version="1.0"?>
 <OrderedItem xmlns:inventory="http://www.cpandl.com" xmlns:money="http://www.cohowinery.com">
   <inventory:ItemName>Widget</inventory:ItemName>
   <inventory:Description>Regular Widget</inventory:Description>
   <money:UnitPrice>2.3</money:UnitPrice>
   <inventory:Quantity>10</inventory:Quantity>
   <money:LineTotal>23</money:LineTotal>
 </OrderedItem>

Remarques

La désérialisation est le processus de lecture d’un document XML et de construction d’un objet fortement typé dans le schéma XML (XSD) du document.

Avant de désérialiser, un XmlSerializer doit être construit à l’aide du type de l’objet qui est désérialisé.

Utilisez le stream paramètre pour spécifier un objet qui dérive de la Stream classe, conçu pour écrire dans des flux. Les classes qui dérivent de la Stream classe sont les suivantes :

• BufferedStream

• FileStream

• MemoryStream

• NetworkStream

• CryptoStream

Voir aussi

• XmlAttributes
• CanDeserialize(XmlReader)
• Serialize(TextWriter, Object)
• Introduction à la sérialisation XML
• Comment : spécifier un nom d'élément différent pour un flux XML
• Contrôle de la sérialisation XML à l'aide d'attributs
• Exemples de sérialisation XML
• Outil XML Schema Definition (Xsd.exe)

public:
 System::Object ^ Deserialize(System::IO::TextReader ^ textReader);

public object Deserialize (System.IO.TextReader textReader);

public object? Deserialize (System.IO.TextReader textReader);

member this.Deserialize : System.IO.TextReader -> obj

Public Function Deserialize (textReader As TextReader) As Object

Paramètres

Retours

Object

Object en cours de désérialisation.

Exceptions

Exemples

L’exemple suivant désérialise un objet à l’aide d’un TextReader objet.

#using <System.Xml.dll>
#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Text;
using namespace System::Xml::Serialization;

// This is the class that will be deserialized.
public ref class OrderedItem
{
public:
    String^ ItemName;
    String^ Description;
    Decimal UnitPrice;
    int Quantity;
    Decimal LineTotal;

    // A custom method used to calculate price per item.
    void Calculate()
    {
        LineTotal = UnitPrice * Quantity;
    }
};

void DeserializeObject( String^ filename )
{
    Console::WriteLine( "Reading with TextReader" );

    // Create an instance of the XmlSerializer specifying type.
    XmlSerializer^ serializer = gcnew XmlSerializer( OrderedItem::typeid );

    /* Create a TextReader to read the file. Specify an
       Encoding to use. */
    TextReader^ reader = gcnew StreamReader( filename,Encoding::Unicode );

    // Declare an object variable of the type to be deserialized.
    OrderedItem^ i;

    // Use the Deserialize method to restore the object's state.
    i = dynamic_cast<OrderedItem^>(serializer->Deserialize( reader ));

    // Write out the properties of the object.
    Console::Write( "{0}\t{1}\t{2}\t{3}\t{4}", i->ItemName, i->Description, i->UnitPrice, i->Quantity, i->LineTotal );
}

int main()
{
    // Read a purchase order.
    DeserializeObject( "simple.xml" );
}

using System;
using System.IO;
using System.Text;
using System.Xml.Serialization;

// This is the class that will be deserialized.
public class OrderedItem
{
    [XmlElement(Namespace = "http://www.cpandl.com")]
    public string ItemName;
    [XmlElement(Namespace = "http://www.cpandl.com")]
    public string Description;
    [XmlElement(Namespace = "http://www.cohowinery.com")]
    public decimal UnitPrice;
    [XmlElement(Namespace = "http://www.cpandl.com")]
    public int Quantity;
    [XmlElement(Namespace = "http://www.cohowinery.com")]
    public decimal LineTotal;
    // A custom method used to calculate price per item.
    public void Calculate()
    {
        LineTotal = UnitPrice * Quantity;
    }
}

public class Test
{
   public static void Main()
    {
        Test t = new Test();
        // Read a purchase order.
        t.DeserializeObject("simple.xml");
    }

    private void DeserializeObject(string filename)
    {
        Console.WriteLine("Reading with TextReader");

        // Create an instance of the XmlSerializer specifying type.
        XmlSerializer serializer =
        new XmlSerializer(typeof(OrderedItem));

        // Create a TextReader to read the file.
        FileStream fs = new FileStream(filename, FileMode.OpenOrCreate);
        TextReader reader = new StreamReader(fs);

        // Declare an object variable of the type to be deserialized.
        OrderedItem i;

        // Use the Deserialize method to restore the object's state.
        i = (OrderedItem) serializer.Deserialize(reader);

        // Write out the properties of the object.
        Console.Write(
            i.ItemName + "\t" +
            i.Description + "\t" +
            i.UnitPrice + "\t" +
            i.Quantity + "\t" +
            i.LineTotal);
    }
}

Imports System.IO
Imports System.Text
Imports System.Xml.Serialization

' This is the class that will be deserialized.
Public Class OrderedItem
    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public ItemName As String

    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public Description As String
    
    <XmlElement(Namespace := "http://www.cohowinery.com")> _
    Public UnitPrice As Decimal
    
    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public Quantity As Integer
    
    <XmlElement(Namespace := "http://www.cohowinery.com")> _
    Public LineTotal As Decimal
    ' A custom method used to calculate price per item.
    Public Sub Calculate()
        LineTotal = UnitPrice * Quantity
    End Sub
End Class
Public Class Test
    
    Public Shared Sub Main()
        Dim t As New Test()
        ' Read a purchase order.
        t.DeserializeObject("simple.xml")
    End Sub
    
    Private Sub DeserializeObject(filename As String)
        Console.WriteLine("Reading with TextReader")
        
        ' Create an instance of the XmlSerializer specifying type.
        Dim serializer As New XmlSerializer(GetType(OrderedItem))
        
        ' Create a TextReader to read the file. 
        Dim fs as New FileStream(filename, FileMode.OpenOrCreate)
        Dim reader As New StreamReader(fs)
        
        ' Declare an object variable of the type to be deserialized.
        Dim i As OrderedItem
        
        ' Use the Deserialize method to restore the object's state.
        i = CType(serializer.Deserialize(reader), OrderedItem)
        
        ' Write out the properties of the object.
        Console.Write(i.ItemName & ControlChars.Tab & _
                      i.Description & ControlChars.Tab & _
                      i.UnitPrice & ControlChars.Tab & _
                      i.Quantity & ControlChars.Tab & _
                      i.LineTotal)
    End Sub
End Class

Remarques

La désérialisation est le processus de lecture d’une instance d’un document XML et la construction d’un objet fortement typé dans le schéma XML (XSD) du document.

Avant de désérialiser, un XmlSerializer doit être construit à l’aide du type de l’objet qui est désérialisé.

Classes qui héritent d’inclure TextReader StringReader et StreamReader. Si vous utilisez un StreamReader objet pour désérialiser un objet, vous devez construire l’objet StreamReader avec un élément approprié Encoding. L’encodage spécifié par le document XML est ignoré.

Voir aussi

• XmlAttributes
• CanDeserialize(XmlReader)
• Serialize(TextWriter, Object)
• Introduction à la sérialisation XML
• Comment : spécifier un nom d'élément différent pour un flux XML
• Contrôle de la sérialisation XML à l'aide d'attributs
• Exemples de sérialisation XML
• Outil XML Schema Definition (Xsd.exe)

protected:
 virtual System::Object ^ Deserialize(System::Xml::Serialization::XmlSerializationReader ^ reader);

protected virtual object Deserialize (System.Xml.Serialization.XmlSerializationReader reader);

abstract member Deserialize : System.Xml.Serialization.XmlSerializationReader -> obj
override this.Deserialize : System.Xml.Serialization.XmlSerializationReader -> obj

Protected Overridable Function Deserialize (reader As XmlSerializationReader) As Object

Paramètres

Retours

Object

Objet désérialisé.

Exceptions

public:
 System::Object ^ Deserialize(System::Xml::XmlReader ^ xmlReader);

public object Deserialize (System.Xml.XmlReader xmlReader);

public object? Deserialize (System.Xml.XmlReader xmlReader);

member this.Deserialize : System.Xml.XmlReader -> obj

Public Function Deserialize (xmlReader As XmlReader) As Object

Paramètres

Retours

Object

Object en cours de désérialisation.

Exceptions

Exemples

L’exemple suivant désérialise un objet à l’aide d’un XmlReader.

#using <System.Xml.dll>
#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Text;
using namespace System::Xml;
using namespace System::Xml::Serialization;

// This is the class that will be deserialized.
public ref class OrderedItem
{
public:
    String^ ItemName;
    String^ Description;
    Decimal UnitPrice;
    int Quantity;
    Decimal LineTotal;

    // A custom method used to calculate price per item.
    void Calculate()
    {
        LineTotal = UnitPrice * Quantity;
    }
};

void DeserializeObject( String^ filename )
{
    Console::WriteLine( "Reading with XmlReader" );

    // Create an instance of the XmlSerializer specifying type and namespace.
    XmlSerializer^ serializer = gcnew XmlSerializer( OrderedItem::typeid );

    // A FileStream is needed to read the XML document.
    FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
    XmlReader^ reader = gcnew XmlTextReader( fs );

    // Declare an object variable of the type to be deserialized.
    OrderedItem^ i;

    // Use the Deserialize method to restore the object's state.
    i = dynamic_cast<OrderedItem^>(serializer->Deserialize( reader ));

    // Write out the properties of the object.
    Console::Write( "{0}\t{1}\t{2}\t{3}\t{4}", i->ItemName, i->Description, i->UnitPrice, i->Quantity, i->LineTotal );
}

int main()
{
    // Read a purchase order.
    DeserializeObject( "simple.xml" );
}

using System;
using System.IO;
using System.Text;
using System.Xml;
using System.Xml.Serialization;

// This is the class that will be deserialized.
public class OrderedItem
{
    public string ItemName;
    public string Description;
    public decimal UnitPrice;
    public int Quantity;
    public decimal LineTotal;

    // A custom method used to calculate price per item.
    public void Calculate()
    {
        LineTotal = UnitPrice * Quantity;
    }
}
public class Test
{
    public static void Main(string[] args)
    {
        Test t = new Test();
        // Read a purchase order.
        t.DeserializeObject("simple.xml");
    }

    private void DeserializeObject(string filename)
    {
        Console.WriteLine("Reading with XmlReader");

        // Create an instance of the XmlSerializer specifying type and namespace.
        XmlSerializer serializer = new
        XmlSerializer(typeof(OrderedItem));

        // A FileStream is needed to read the XML document.
        FileStream fs = new FileStream(filename, FileMode.Open);
        XmlReader reader = XmlReader.Create(fs);

        // Declare an object variable of the type to be deserialized.
        OrderedItem i;

        // Use the Deserialize method to restore the object's state.
        i = (OrderedItem)serializer.Deserialize(reader);
        fs.Close();

        // Write out the properties of the object.
        Console.Write(
        i.ItemName + "\t" +
        i.Description + "\t" +
        i.UnitPrice + "\t" +
        i.Quantity + "\t" +
        i.LineTotal);
    }
}

Imports System.IO
Imports System.Text
Imports System.Xml
Imports System.Xml.Serialization

' This is the class that will be deserialized.
Public Class OrderedItem
    Public ItemName As String
    Public Description As String
    Public UnitPrice As Decimal
    Public Quantity As Integer
    Public LineTotal As Decimal
        
    ' A custom method used to calculate price per item.
    Public Sub Calculate()
        LineTotal = UnitPrice * Quantity
    End Sub
End Class

Public Class Test
    
    Public Shared Sub Main()
        Dim t As New Test()
        ' Read a purchase order.
        t.DeserializeObject("simple.xml")
    End Sub
      
    Private Sub DeserializeObject(ByVal filename As String)
        Console.WriteLine("Reading with XmlReader")
        
        ' Create an instance of the XmlSerializer specifying type and namespace.
        Dim serializer As New XmlSerializer(GetType(OrderedItem))
        
        ' A FileStream is needed to read the XML document.
        Dim fs As New FileStream(filename, FileMode.Open)
        Dim reader As XmlReader = XmlReader.Create(fs)
        
        ' Declare an object variable of the type to be deserialized.
        Dim i As OrderedItem
        
        ' Use the Deserialize method to restore the object's state.
        i = CType(serializer.Deserialize(reader), OrderedItem)
        fs.Close()

        ' Write out the properties of the object.
        Console.Write(i.ItemName & ControlChars.Tab & _
                      i.Description & ControlChars.Tab & _
                      i.UnitPrice & ControlChars.Tab & _
                      i.Quantity & ControlChars.Tab & _
                      i.LineTotal)
    End Sub
End Class

<?xml version="1.0"?>
 <OrderedItem xmlns:inventory="http://www.cpandl.com" xmlns:money="http://www.cohowinery.com">
   <inventory:ItemName>Widget</inventory:ItemName>
   <inventory:Description>Regular Widget</inventory:Description>
   <money:UnitPrice>2.3</money:UnitPrice>
   <inventory:Quantity>10</inventory:Quantity>
   <money:LineTotal>23</money:LineTotal>
 </OrderedItem>

Remarques

La désérialisation est le processus de lecture d’une instance d’un document XML et la construction d’un objet fortement typé dans le schéma XML (XSD) du document.

Avant de désérialiser, un XmlSerializer doit être construit à l’aide du type de l’objet qui est désérialisé.

Le XmlReader code détecte et utilise automatiquement l’encodage spécifié par le document XML.

Voir aussi

• XmlAttributes
• CanDeserialize(XmlReader)
• Serialize(TextWriter, Object)
• Introduction à la sérialisation XML
• Comment : spécifier un nom d'élément différent pour un flux XML
• Contrôle de la sérialisation XML à l'aide d'attributs
• Exemples de sérialisation XML
• Outil XML Schema Definition (Xsd.exe)

public:
 System::Object ^ Deserialize(System::Xml::XmlReader ^ xmlReader, System::String ^ encodingStyle);

public object? Deserialize (System.Xml.XmlReader xmlReader, string? encodingStyle);

public object Deserialize (System.Xml.XmlReader xmlReader, string encodingStyle);

member this.Deserialize : System.Xml.XmlReader * string -> obj

Public Function Deserialize (xmlReader As XmlReader, encodingStyle As String) As Object

Paramètres

Retours

Object

Objet désérialisé.

Exceptions

Remarques

La désérialisation est le processus de lecture d’une instance d’un document XML et la construction d’un objet fortement typé dans le schéma XML (XSD) du document.

Avant de désérialiser, un XmlSerializer doit être construit à l’aide du type de l’objet qui est désérialisé.

Définissez le paramètre sur «http://schemas.xmlsoap.org/soap/encoding/ » pour l’encodage SOAP version 1.1 ; sinon, définissez-le encodingStyle sur «http://www.w3.org/2001/12/soap-encoding » pour l’encodage SOAP version 1.2.

Note Impossible XmlSerializer de désérialiser les tableaux suivants : tableaux de ArrayList et tableaux de List<T>.

Voir aussi

• XmlAttributes
• CanDeserialize(XmlReader)
• Serialize(TextWriter, Object)
• Introduction à la sérialisation XML
• Comment : spécifier un nom d'élément différent pour un flux XML
• Contrôle de la sérialisation XML à l'aide d'attributs
• Exemples de sérialisation XML
• Outil XML Schema Definition (Xsd.exe)

public:
 System::Object ^ Deserialize(System::Xml::XmlReader ^ xmlReader, System::Xml::Serialization::XmlDeserializationEvents events);

public object? Deserialize (System.Xml.XmlReader xmlReader, System.Xml.Serialization.XmlDeserializationEvents events);

public object Deserialize (System.Xml.XmlReader xmlReader, System.Xml.Serialization.XmlDeserializationEvents events);

member this.Deserialize : System.Xml.XmlReader * System.Xml.Serialization.XmlDeserializationEvents -> obj

Public Function Deserialize (xmlReader As XmlReader, events As XmlDeserializationEvents) As Object

Paramètres

Retours

Object

Object en cours de désérialisation.

Remarques

Objet désérialisé.

public:
 System::Object ^ Deserialize(System::Xml::XmlReader ^ xmlReader, System::String ^ encodingStyle, System::Xml::Serialization::XmlDeserializationEvents events);

public object? Deserialize (System.Xml.XmlReader xmlReader, string? encodingStyle, System.Xml.Serialization.XmlDeserializationEvents events);

public object Deserialize (System.Xml.XmlReader xmlReader, string encodingStyle, System.Xml.Serialization.XmlDeserializationEvents events);

member this.Deserialize : System.Xml.XmlReader * string * System.Xml.Serialization.XmlDeserializationEvents -> obj

Public Function Deserialize (xmlReader As XmlReader, encodingStyle As String, events As XmlDeserializationEvents) As Object

Paramètres

Retours

Object

Objet désérialisé.

Remarques

Cette méthode est requise pour la désérialisation des en-têtes inconnus pour les scénarios de service Web uniquement. Cette méthode vous permet d’éviter la synchronisation d’événements dans les méthodes de service Web.