SoapFormatter Class

Reference

Definition

Namespace:: System.Runtime.Serialization.Formatters.Soap

Assembly:: System.Runtime.Serialization.Formatters.Soap.dll

Important

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Serializes and deserializes an object, or an entire graph of connected objects, in SOAP format.

public ref class SoapFormatter sealed : System::Runtime::Remoting::Messaging::IRemotingFormatter

public sealed class SoapFormatter : System.Runtime.Remoting.Messaging.IRemotingFormatter

type SoapFormatter = class
    interface IRemotingFormatter
    interface IFormatter

Public NotInheritable Class SoapFormatter
Implements IRemotingFormatter

Inheritance: Object
SoapFormatter

Implements: IRemotingFormatter IFormatter

Examples

#using <system.dll>
#using <system.runtime.serialization.formatters.soap.dll>

using namespace System;
using namespace System::IO;
using namespace System::Collections;
using namespace System::Runtime::Serialization;
using namespace System::Runtime::Serialization::Formatters::Soap;
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.
   // We will use a file stream here.
   FileStream^ fs = gcnew FileStream( "DataFile.soap",FileMode::Create );
   
   // Construct a SoapFormatter and use it 
   // to serialize the data to the stream.
   SoapFormatter^ formatter = gcnew SoapFormatter;
   try
   {
      formatter->Serialize( fs, addresses );
   }
   catch ( SerializationException^ e ) 
   {
      Console::WriteLine( "Failed to serialize. Reason: {0}", e->Message );
      throw;
   }
   finally
   {
      fs->Close();
   }

}

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.soap",FileMode::Open );
   try
   {
      SoapFormatter^ formatter = gcnew SoapFormatter;
      
      // 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 to the console.
   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()
{
   Serialize();
   Deserialize();
}

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

// Note: When building this code, you must reference the
// System.Runtime.Serialization.Formatters.Soap.dll assembly.
using System.Runtime.Serialization.Formatters.Soap;

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.
        // Use a file stream here.
        FileStream fs = new FileStream("DataFile.soap", FileMode.Create);

        // Construct a SoapFormatter and use it
        // to serialize the data to the stream.
        SoapFormatter formatter = new SoapFormatter();
        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.soap", FileMode.Open);
        try
        {
            SoapFormatter formatter = new SoapFormatter();

            // 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 to the console.
        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

' Note: When building this code, you must reference the
' System.Runtime.Serialization.Formatters.Soap.dll assembly.
Imports System.Runtime.Serialization.Formatters.Soap


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.
      ' Use a file stream here.
      Dim fs As New FileStream("DataFile.soap", FileMode.Create)

      ' Construct a SoapFormatter and use it 
      ' to serialize the data to the stream.
      Dim formatter As New SoapFormatter
      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.soap", FileMode.Open)
      Try
         Dim formatter As New SoapFormatter

         ' 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 to the console.
      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

Note

Beginning with .NET Framework 2.0, this class is obsolete.

Warning

BinaryFormatter is insecure and can't be made secure. For more information, see the BinaryFormatter security guide.

The SoapFormatter and BinaryFormatter classes implement the IRemotingFormatter interface to support remote procedure calls (RPCs), and the IFormatter interface (inherited by the IRemotingFormatter) to support serialization of a graph of objects. The SoapFormatter class also supports RPCs with ISoapMessage objects, without using the IRemotingFormatter functionality.

During RPCs, the IRemotingFormatter interface allows the specification of two separate object graphs: the graph of objects to serialize, and an additional graph that contains an array of header objects that convey information about the remote function call (for example, transaction ID or a method signature). For proper serialization, the root object of the first graph must be an object that implements either the IMethodCallMessage interface or the IMethodReturnMessage interface.

During deserialization of an RPC, a HeaderHandler delegate is specified to the Deserialize method of the formatter. The remoting infrastructure uses the HeaderHandler delegate to produce an object that supports the ISerializable interface. This object contains the information stored in the headers, and becomes the root of the graph returned by the deserializer.

The SoapFormatter can also handle RPCs that are produced with objects that implement the ISoapMessage interface. To create an RPC without using the IRemotingFormatter functionality, place an object that supports the ISoapMessage interface at the root of a graph being serialized. To deserialize an RPC created in this manner the TopObject property must be set to another object that supports the ISoapMessage interface, and contains the relevant remote call information.

TimeSpan objects are serialized according to the ISO 8601: 1998 section 5.5.3.2.1 "Alternative" standard.

Constructors

SoapFormatter()	Initializes a new instance of the SoapFormatter class with default property values.
SoapFormatter(ISurrogateSelector, StreamingContext)	Initializes a new instance of the SoapFormatter class with the specified ISurrogateSelector and StreamingContext.

Properties

AssemblyFormat	Gets or sets the behavior of the deserializer with regards to finding and loading assemblies.
Binder	Gets or sets the SerializationBinder that controls the binding of a serialized object to a type.
Context	Gets or sets the StreamingContext used with this SoapFormatter.
FilterLevel	Gets or sets the TypeFilterLevel of automatic deserialization for .NET Framework remoting.
SurrogateSelector	Gets or sets the SurrogateSelector that controls type substitution during serialization and deserialization.
TopObject	Gets or sets the ISoapMessage into which the SOAP top object is deserialized.
TypeFormat	Gets or sets the format in which type descriptions are laid out in the serialized stream.

Methods

Deserialize(Stream, HeaderHandler)	Deserializes the stream into an object graph with any headers in that stream being handled by the given HeaderHandler.
Deserialize(Stream)	Deserializes the data on the provided stream and reconstitutes the graph of objects.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
Serialize(Stream, Object, Header[])	Serializes an object or graph of objects with the specified root to the given Stream in the SOAP Remote Procedure Call (RPC) format.
Serialize(Stream, Object)	Serializes an object or graph of objects with the specified root to the given Stream.
ToString()	Returns a string that represents the current object. (Inherited from Object)

Applies to

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