BinaryFormatter BinaryFormatter BinaryFormatter BinaryFormatter Constructors

Definizione

Overload

BinaryFormatter() BinaryFormatter() BinaryFormatter()

Inizializza una nuova istanza della classe BinaryFormatter con i valori predefiniti.Initializes a new instance of the BinaryFormatter class with default values.

BinaryFormatter(ISurrogateSelector, StreamingContext) BinaryFormatter(ISurrogateSelector, StreamingContext) BinaryFormatter(ISurrogateSelector, StreamingContext) BinaryFormatter(ISurrogateSelector, StreamingContext)

Inizializza una nuova istanza della classe BinaryFormatter con un selettore di surrogati e un contesto di flusso specificati.Initializes a new instance of the BinaryFormatter class with a given surrogate selector and streaming context.

BinaryFormatter() BinaryFormatter() BinaryFormatter()

Inizializza una nuova istanza della classe BinaryFormatter con i valori predefiniti.Initializes a new instance of the BinaryFormatter class with default values.

public:
 BinaryFormatter();
public BinaryFormatter ();
Public Sub New ()

Esempi

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 App
{
public:
   static void Serialize()
   {
      
      // Create a hashtable of values that will eventually be serialized.
      Hashtable^ addresses = gcnew Hashtable;
      addresses->Add( "Jeff", "123 Main Street, Redmond, WA 98052" );
      addresses->Add( "Fred", "987 Pine Road, Phila., PA 19116" );
      addresses->Add( "Mary", "PO Box 112233, Palo Alto, CA 94301" );
      
      // To serialize the hashtable (and its keys/values),  
      // you must first open a stream for writing. 
      // In this case we will use a file stream.
      FileStream^ fs = gcnew FileStream( "DataFile.dat",FileMode::Create );
      
      // Construct a BinaryFormatter and use it to serialize the data to the stream.
      BinaryFormatter^ formatter = gcnew BinaryFormatter;
      try
      {
         formatter->Serialize( fs, addresses );
      }
      catch ( SerializationException^ e ) 
      {
         Console::WriteLine( "Failed to serialize. Reason: {0}", e->Message );
         throw;
      }
      finally
      {
         fs->Close();
      }

   }

   static void Deserialize()
   {
      
      // Declare the hashtable reference.
      Hashtable^ addresses = nullptr;
      
      // Open the file containing the data that we want to deserialize.
      FileStream^ fs = gcnew FileStream( "DataFile.dat",FileMode::Open );
      try
      {
         BinaryFormatter^ formatter = gcnew BinaryFormatter;
         
         // Deserialize the hashtable from the file and 
         // assign the reference to our local variable.
         addresses = dynamic_cast<Hashtable^>(formatter->Deserialize( fs ));
      }
      catch ( SerializationException^ e ) 
      {
         Console::WriteLine( "Failed to deserialize. Reason: {0}", e->Message );
         throw;
      }
      finally
      {
         fs->Close();
      }

      
      // To prove that the table deserialized correctly, display the keys/values.
      IEnumerator^ myEnum = addresses->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         DictionaryEntry ^ de = safe_cast<DictionaryEntry ^>(myEnum->Current);
         Console::WriteLine( " {0} lives at {1}.", de->Key, de->Value );
      }
   }

};


[STAThread]
int main()
{
   App::Serialize();
   App::Deserialize();
   return 0;
}

using System;
using System.IO;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;

public class App 
{
    [STAThread]
    static void Main() 
    {
        Serialize();
        Deserialize();
    }

    static void Serialize() 
    {
        // Create a hashtable of values that will eventually be serialized.
        Hashtable addresses = new Hashtable();
        addresses.Add("Jeff", "123 Main Street, Redmond, WA 98052");
        addresses.Add("Fred", "987 Pine Road, Phila., PA 19116");
        addresses.Add("Mary", "PO Box 112233, Palo Alto, CA 94301");

        // To serialize the hashtable and its key/value pairs,  
        // you must first open a stream for writing. 
        // In this case, use a file stream.
        FileStream fs = new FileStream("DataFile.dat", FileMode.Create);

        // Construct a BinaryFormatter and use it to serialize the data to the stream.
        BinaryFormatter formatter = new BinaryFormatter();
        try 
        {
            formatter.Serialize(fs, addresses);
        }
        catch (SerializationException e) 
        {
            Console.WriteLine("Failed to serialize. Reason: " + e.Message);
            throw;
        }
        finally 
        {
            fs.Close();
        }
    }

   
    static void Deserialize() 
    {
        // Declare the hashtable reference.
        Hashtable addresses  = null;

        // Open the file containing the data that you want to deserialize.
        FileStream fs = new FileStream("DataFile.dat", FileMode.Open);
        try 
        {
            BinaryFormatter formatter = new BinaryFormatter();

            // Deserialize the hashtable from the file and 
            // assign the reference to the local variable.
            addresses = (Hashtable) formatter.Deserialize(fs);
        }
        catch (SerializationException e) 
        {
            Console.WriteLine("Failed to deserialize. Reason: " + e.Message);
            throw;
        }
        finally 
        {
            fs.Close();
        }

        // To prove that the table deserialized correctly, 
        // display the key/value pairs.
        foreach (DictionaryEntry de in addresses) 
        {
            Console.WriteLine("{0} lives at {1}.", de.Key, de.Value);
        }
    }
}
Imports System.IO
Imports System.Collections
Imports System.Runtime.Serialization.Formatters.Binary
Imports System.Runtime.Serialization


Module App

    Sub Main()
        Serialize()
        Deserialize()
    End Sub

    Sub Serialize()

        ' Create a hashtable of values that will eventually be serialized.
        Dim addresses As New Hashtable
        addresses.Add("Jeff", "123 Main Street, Redmond, WA 98052")
        addresses.Add("Fred", "987 Pine Road, Phila., PA 19116")
        addresses.Add("Mary", "PO Box 112233, Palo Alto, CA 94301")

        ' To serialize the hashtable (and its key/value pairs),  
        ' you must first open a stream for writing. 
        ' In this case, use a file stream.
        Dim fs As New FileStream("DataFile.dat", FileMode.Create)

        ' Construct a BinaryFormatter and use it to serialize the data to the stream.
        Dim formatter As New BinaryFormatter
        Try
            formatter.Serialize(fs, addresses)
        Catch e As SerializationException
            Console.WriteLine("Failed to serialize. Reason: " & e.Message)
            Throw
        Finally
            fs.Close()
        End Try
    End Sub



    Sub Deserialize()
        ' Declare the hashtable reference.
        Dim addresses As Hashtable = Nothing

        ' Open the file containing the data that you want to deserialize.
        Dim fs As New FileStream("DataFile.dat", FileMode.Open)
        Try
            Dim formatter As New BinaryFormatter

            ' Deserialize the hashtable from the file and 
            ' assign the reference to the local variable.
            addresses = DirectCast(formatter.Deserialize(fs), Hashtable)
        Catch e As SerializationException
            Console.WriteLine("Failed to deserialize. Reason: " & e.Message)
            Throw
        Finally
            fs.Close()
        End Try

        ' To prove that the table deserialized correctly, 
        ' display the key/value pairs.
        Dim de As DictionaryEntry
        For Each de In addresses
            Console.WriteLine("{0} lives at {1}.", de.Key, de.Value)
        Next
    End Sub
End Module

Commenti

Questo costruttore imposta le proprietà dell' BinaryFormatter oggetto come segue:This constructor sets the properties of the BinaryFormatter object as follows:

Tipo di proprietàProperty Type CondizioneCondition
SurrogateSelector null
Context Oggetto StreamingContext con un valore che indica che i dati serializzati possono essere trasmessi o ricevuti da qualsiasi altro contesto.A StreamingContext with a value that indicates that serialized data can be transmitted to or received from any of the other contexts. (StreamingContextStates.All)(StreamingContextStates.All)

BinaryFormatter(ISurrogateSelector, StreamingContext) BinaryFormatter(ISurrogateSelector, StreamingContext) BinaryFormatter(ISurrogateSelector, StreamingContext) BinaryFormatter(ISurrogateSelector, StreamingContext)

Inizializza una nuova istanza della classe BinaryFormatter con un selettore di surrogati e un contesto di flusso specificati.Initializes a new instance of the BinaryFormatter class with a given surrogate selector and streaming context.

public:
 BinaryFormatter(System::Runtime::Serialization::ISurrogateSelector ^ selector, System::Runtime::Serialization::StreamingContext context);
public BinaryFormatter (System.Runtime.Serialization.ISurrogateSelector selector, System.Runtime.Serialization.StreamingContext context);
new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter : System.Runtime.Serialization.ISurrogateSelector * System.Runtime.Serialization.StreamingContext -> System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
Public Sub New (selector As ISurrogateSelector, context As StreamingContext)

Parametri

selector
ISurrogateSelector ISurrogateSelector ISurrogateSelector ISurrogateSelector

Oggetto ISurrogateSelector da usare.The ISurrogateSelector to use. Può essere null.Can be null.

context
StreamingContext StreamingContext StreamingContext StreamingContext

Origine e destinazione per i dati serializzati.The source and destination for the serialized data.

Commenti

Inizializza un nuovo BinaryFormatter oggetto per la serializzazione o deserializzazione di oggetti Streamdall'oggetto specificato.Initializes a new BinaryFormatter for serialization or deserialization of objects from the specified Stream.

Il processo di serializzazione o deserializzazione utilizza ISurrogateSelector l'oggetto specificato per cercare i surrogati registrati per i tipi di oggetto che si desidera deserializzare.The serialization or deserialization process uses the specified ISurrogateSelector to search for surrogates that are registered for the object types you want to deserialize. I surrogati sono helper che serializzano e deserializzano gli oggetti di classi specifiche.Surrogates are helpers that serialize and deserialize objects of specific classes. Il valore ISurrogateSelector predefinito non è MarshalByRefObject in grado di gestire la serializzazione di oggetti che derivano da per finalità remote.The default ISurrogateSelector cannot handle the serialization of objects that derive from the MarshalByRefObject for remoting purposes. In una situazione di comunicazione remota ISurrogateSelector la specificata sostituisce l'oggetto MarshalByRefObject derivato da ObjRef con un oggetto serializzato dal selettore di surrogati specificato.In a remoting situation the specified ISurrogateSelector replaces the object derived from MarshalByRefObject with a ObjRef object that is serialized by the specified surrogate selector. Se pertanto si desidera utilizzare oggetti remoti, impostare il selector parametro su un'istanza di. RemotingSurrogateSelectorTherefore, if you want to use remote objects, set the selector parameter to an instance of RemotingSurrogateSelector. Se non sono selector nullnecessari surrogati, impostare il parametro su.If you do not need surrogates, set the selector parameter to be null.

Si applica a