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SerializableAttribute Class

Indicates that a class can be serialized. This class cannot be inherited.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

'Declaration
<ComVisibleAttribute(True)> _
<AttributeUsageAttribute(AttributeTargets.Class Or AttributeTargets.Struct Or AttributeTargets.Enum Or AttributeTargets.Delegate, Inherited:=False)> _
Public NotInheritable Class SerializableAttribute
	Inherits Attribute
'Usage
Dim instance As SerializableAttribute

/** @attribute ComVisibleAttribute(true) */ 
/** @attribute AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Enum|AttributeTargets.Delegate, Inherited=false) */ 
public final class SerializableAttribute extends Attribute
ComVisibleAttribute(true) 
AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Enum|AttributeTargets.Delegate, Inherited=false) 
public final class SerializableAttribute extends Attribute
Not applicable.

Apply the SerializableAttribute attribute to a type to indicate that instances of this type can be serialized. The common language runtime throws SerializationException if any type in the graph of objects being serialized does not have the SerializableAttribute attribute applied.

Apply the SerializableAttribute attribute even if the class also implements the ISerializable interface to control the serialization process.

All the public and private fields in a type that are marked by the SerializableAttribute are serialized by default, unless the type implements the ISerializable interface to override the serialization process. The default serialization process excludes fields that are marked with the NonSerializedAttribute attribute. If a field of a serializable type contains a pointer, a handle, or some other data structure that is specific to a particular environment, and cannot be meaningfully reconstituted in a different environment, then you might want to apply the NonSerializedAttribute attribute to that field.

For more information about using attributes, see [<topic://cpconExtendingMetadataUsingAttributes>]. For more information about serialization, see System.Runtime.Serialization.

Windows Mobile 2003 for Pocket PC, Windows Mobile 2003 for Smartphone, Windows CE Platform Note: The SerializableAttribute attribute is present in the .NET Compact Framework for compatibility only, and will be ignored if used.

The following example demonstrates serialization of an object that is marked with the SerializableAttribute attribute. To use the BinaryFormatter instead of the SoapFormatter, uncomment the appropriate lines.

Imports System
Imports System.IO
Imports System.Runtime.Serialization
Imports System.Runtime.Serialization.Formatters.Soap




Public Class Test
   
   Public Shared Sub Main()
      
      ' Creates a new TestSimpleObject object.
      Dim obj As New TestSimpleObject()
      
      Console.WriteLine("Before serialization the object contains: ")
      obj.Print()
      
      ' Opens a file and serializes the object into it in binary format.
      Dim stream As Stream = File.Open("data.xml", FileMode.Create)
      Dim formatter As New SoapFormatter()
      


      formatter.Serialize(stream, obj)
      stream.Close()
      
      ' Empties obj.
      obj = Nothing
      
      ' Opens file "data.xml" and deserializes the object from it.
      stream = File.Open("data.xml", FileMode.Open)
      formatter = New SoapFormatter()



      obj = CType(formatter.Deserialize(stream), TestSimpleObject)
      stream.Close()
      
      Console.WriteLine("")
      Console.WriteLine("After deserialization the object contains: ")
      obj.Print()

   End Sub 'Main

End Class 'Test


' A test object that needs to be serialized.
<Serializable()> Public Class TestSimpleObject
   
   Public member1 As Integer
   Public member2 As String
   Public member3 As String
   Public member4 As Double
   
   ' A member that is not serialized.
   <NonSerialized()> Public member5 As String  
  
   
   Public Sub New()     
      member1 = 11
      member2 = "hello"
      member3 = "hello"
      member4 = 3.14159265
      member5 = "hello world!"
   End Sub 'New
      
   
   Public Sub Print()      
      Console.WriteLine("member1 = '{0}'", member1)
      Console.WriteLine("member2 = '{0}'", member2)
      Console.WriteLine("member3 = '{0}'", member3)
      Console.WriteLine("member4 = '{0}'", member4)
      Console.WriteLine("member5 = '{0}'", member5)
   End Sub 'Print

End Class 'TestSimpleObject

import System.*;
import System.IO.*;
import System.Runtime.Serialization.*;
import System.Runtime.Serialization.Formatters.Soap.*;
//import System.Runtime.Serialization.Formatters.Binary;

public class Test
{
    public static void main(String[] args)
    {        
        //Creates a new TestSimpleObject object.
        TestSimpleObject obj = new TestSimpleObject();
        Console.WriteLine("Before serialization the object contains: ");
        obj.Print();
        //Opens a file and serializes the object into it in binary format.
        Stream stream = File.Open("data.xml", FileMode.Create);
        SoapFormatter formatter = new SoapFormatter();
        //BinaryFormatter formatter = new BinaryFormatter();
        formatter.Serialize(stream, obj);
        stream.Close();
        //Empties obj.
        obj = null;
        //Opens file "data.xml" and deserializes the object from it.
        stream = File.Open("data.xml", FileMode.Open);
        formatter = new SoapFormatter();
        //formatter = new BinaryFormatter();
        obj = (TestSimpleObject)(formatter.Deserialize(stream));
        stream.Close();
        Console.WriteLine("");
        Console.WriteLine("After deserialization the object contains: ");
        obj.Print();
    } //main
} //Test

// A test object that needs to be serialized.
/** @attribute Serializable()
 */
public class TestSimpleObject
{
    public int member1;
    public String member2;
    public String member3;
    public double member4;

    // A field that is not serialized.
    /** @attribute NonSerialized()
     */
    public String member5;

    public TestSimpleObject()
    {
        member1 = 11;
        member2 = "hello";
        member3 = "hello";
        member4 = 3.14159265;
        member5 = "hello world!";
    } //TestSimpleObject

    public void Print()
    {
        Console.WriteLine("member1 = '{0}'", (System.Int32)member1);
        Console.WriteLine("member2 = '{0}'", member2);
        Console.WriteLine("member3 = '{0}'", member3);
        Console.WriteLine("member4 = '{0}'", (System.Double)member4);
        Console.WriteLine("member5 = '{0}'", member5);
    } //Print
} //TestSimpleObject

System.Object
   System.Attribute
    System.SerializableAttribute

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0

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