SerializableAttribute Class
Indicates that a class can be serialized. This class cannot be inherited.
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
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 Extending Metadata Using Attributes. For more information about serialization, see System.Runtime.Serialization.
Windows Mobile for Pocket PC, Windows Mobile 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
#using <mscorlib.dll>
#using <system.dll>
#using <system.messaging.dll>
#using <System.Runtime.Serialization.Formatters.Soap.dll>
using namespace System;
using namespace System::IO;
using namespace System::Runtime::Serialization::Formatters::Soap;
// A test object that needs to be serialized.
[Serializable]
__gc class TestSimpleObject
{
int member1;
String* member2;
String* member3;
double member4;
public:
// A field that is not serialized.
[NonSerialized] String* member5;
TestSimpleObject()
{
member1 = 11;
member2 = S"hello";
member3 = S"hello";
member4 = 3.14159265;
member5 = S"hello world!";
}
void Print()
{
Console::WriteLine(S"member1 = ' {0}'", __box(member1));
Console::WriteLine(S"member2 = ' {0}'", member2);
Console::WriteLine(S"member3 = ' {0}'", member3);
Console::WriteLine(S"member4 = ' {0}'", __box(member4));
Console::WriteLine(S"member5 = ' {0}'", member5);
}
};
int main()
{
//Creates a new TestSimpleObject object.
TestSimpleObject* obj = new TestSimpleObject();
Console::WriteLine(S"Before serialization the Object* contains: ");
obj->Print();
//Opens a file and serializes the object into it in binary format.
Stream* stream = File::Open(S"data.xml", FileMode::Create);
SoapFormatter* formatter = new SoapFormatter();
//BinaryFormatter* formatter = new BinaryFormatter();
formatter->Serialize(stream, obj);
stream->Close();
//Empties obj.
obj = 0;
//Opens file S"data.xml" and deserializes the object from it.
stream = File::Open(S"data.xml", FileMode::Open);
formatter = new SoapFormatter();
//formatter = new BinaryFormatter();
obj = dynamic_cast<TestSimpleObject*>(formatter->Deserialize(stream));
stream->Close();
Console::WriteLine(S"");
Console::WriteLine(S"After deserialization the object contains: ");
obj->Print();
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.