BinaryFormatter Constructors

Definition

初始化 BinaryFormatter 类的新实例。Initializes a new instance of the BinaryFormatter class.

Overloads

BinaryFormatter()

使用默认值初始化 BinaryFormatter 类的新实例。Initializes a new instance of the BinaryFormatter class with default values.

BinaryFormatter(ISurrogateSelector, StreamingContext)

使用给定的代理项选择器和流上下文来初始化 BinaryFormatter 类的新实例。Initializes a new instance of the BinaryFormatter class with a given surrogate selector and streaming context.

BinaryFormatter()

使用默认值初始化 BinaryFormatter 类的新实例。Initializes a new instance of the BinaryFormatter class with default values.

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

Examples

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

Remarks

此构造函数将设置 BinaryFormatter 对象的属性,如下所示:This constructor sets the properties of the BinaryFormatter object as follows:

属性类型Property Type 条件Condition
SurrogateSelector null
Context 一个包含值的 StreamingContext,该值指示序列化的数据可以传输到任何其他上下文或从任何其他上下文接收。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)

使用给定的代理项选择器和流上下文来初始化 BinaryFormatter 类的新实例。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)

Parameters

selector
ISurrogateSelector

要使用的 ISurrogateSelectorThe ISurrogateSelector to use. 可以为 nullCan be null.

context
StreamingContext

序列化数据的源和目标。The source and destination for the serialized data.

Remarks

初始化新的 BinaryFormatter,用于序列化或反序列化指定 Stream中的对象。Initializes a new BinaryFormatter for serialization or deserialization of objects from the specified Stream.

序列化或反序列化进程使用指定的 ISurrogateSelector 搜索注册为要反序列化的对象类型的代理项。The serialization or deserialization process uses the specified ISurrogateSelector to search for surrogates that are registered for the object types you want to deserialize. 代理项是对特定类的对象进行序列化和反序列化的帮助器。Surrogates are helpers that serialize and deserialize objects of specific classes. 默认 ISurrogateSelector 无法处理从 MarshalByRefObject 派生的对象的序列化,以便进行远程处理。The default ISurrogateSelector cannot handle the serialization of objects that derive from the MarshalByRefObject for remoting purposes. 在远程处理情况下,指定 ISurrogateSelector 将派生自 MarshalByRefObject 的对象替换为由指定代理项选择器序列化的 ObjRef 对象。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. 因此,如果要使用远程对象,请将 selector 参数设置为 RemotingSurrogateSelector的实例。Therefore, if you want to use remote objects, set the selector parameter to an instance of RemotingSurrogateSelector. 如果不需要代理项,请将 selector 参数设置为 nullIf you do not need surrogates, set the selector parameter to be null.

Applies to