SerializableAttribute SerializableAttribute SerializableAttribute SerializableAttribute Class

定義

指示類別可以序列化。Indicates that a class can be serialized. 這個類別無法被繼承。This class cannot be inherited.

public ref class SerializableAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Struct | System.AttributeTargets.Enum | System.AttributeTargets.Delegate, Inherited=false)]
[System.Runtime.InteropServices.ComVisible(true)]
[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Delegate | System.AttributeTargets.Enum | System.AttributeTargets.Struct, Inherited=false)]
public sealed class SerializableAttribute : Attribute
type SerializableAttribute = class
    inherit Attribute
Public NotInheritable Class SerializableAttribute
Inherits Attribute
繼承
SerializableAttributeSerializableAttributeSerializableAttributeSerializableAttribute
屬性

範例

下列範例示範如何還原序列化的物件標示為SerializableAttribute屬性。The following example demonstrates serialization of an object that is marked with the SerializableAttribute attribute. 若要使用BinaryFormatter而不是SoapFormatter,適當的行取消註解。To use the BinaryFormatter instead of the SoapFormatter, uncomment the appropriate lines.

#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]
ref class TestSimpleObject
{
private:
   int member1;
   String^ member2;
   String^ member3;
   double member4;

public:

   // A field that is not serialized.

   [NonSerialized]
   String^ member5;
   TestSimpleObject()
   {
      member1 = 11;
      member2 = "hello";
      member3 = "hello";
      member4 = 3.14159265;
      member5 = "hello world!";
   }

   void 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 );
   }

};

int main()
{
   
   //Creates a new TestSimpleObject object.
   TestSimpleObject^ obj = gcnew 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 = gcnew SoapFormatter;
   
   //BinaryFormatter* formatter = new BinaryFormatter();
   formatter->Serialize( stream, obj );
   stream->Close();
   
   //Empties obj.
   obj = nullptr;
   
   //Opens file S"data.xml" and deserializes the object from it.
   stream = File::Open( "data.xml", FileMode::Open );
   formatter = gcnew SoapFormatter;
   
   //formatter = new BinaryFormatter();
   obj = dynamic_cast<TestSimpleObject^>(formatter->Deserialize( stream ));
   stream->Close();
   Console::WriteLine( "" );
   Console::WriteLine( "After deserialization the object contains: " );
   obj->Print();
}

using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Soap;
//using System.Runtime.Serialization.Formatters.Binary;

public class Test {
   public static void Main()  {

      //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();
   }
}


// A test object that needs to be serialized.
[Serializable()]		
public class TestSimpleObject  {

    public int member1;
    public string member2;
    public string member3;
    public double member4;
    
    // A field that is not serialized.
    [NonSerialized()] public string member5; 
    
    public TestSimpleObject() {

        member1 = 11;
        member2 = "hello";
        member3 = "hello";
        member4 = 3.14159265;
        member5 = "hello world!";
    }


    public void 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);
    }
}
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

備註

SerializableAttribute 屬性套用至某個類型,以表示此類型的執行個體為可序列化。Apply the SerializableAttribute attribute to a type to indicate that instances of this type can be serialized. Common language runtime 會擲回SerializationException如果在正在序列化的物件圖形中任何型別沒有SerializableAttribute套用的屬性。The common language runtime throws SerializationException if any type in the graph of objects being serialized does not have the SerializableAttribute attribute applied.

適用於SerializableAttribute屬性,即使此類別也會實作ISerializable介面來控制序列化程序。Apply the SerializableAttribute attribute even if the class also implements the ISerializable interface to control the serialization process.

當您將套用SerializableAttribute屬性型別,所有的私人和公用欄位序列化預設。When you apply the SerializableAttribute attribute to a type, all private and public fields are serialized by default. 您可以藉由實作更細微地控制序列化ISerializable介面來覆寫序列化程序。You can control serialization more granularly by implementing the ISerializable interface to override the serialization process.

您可以從序列化排除欄位,藉由套用或NonSerializedAttribute屬性欄位。Or you can exclude fields from serialization by applying the NonSerializedAttribute attribute to the field. 如果可序列化型別的欄位包含指標、 控制代碼或其他某些資料結構,專屬於特定的環境中,並不能在不同的環境中,有意義地還原,則您可能要套用NonSerializedAttribute屬性該欄位中。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.

如需使用屬性的詳細資訊,請參閱屬性For more information about using attributes, see Attributes. 如需序列化的詳細資訊,請參閱 System.Runtime.SerializationFor more information about serialization, see System.Runtime.Serialization.

建構函式

SerializableAttribute() SerializableAttribute() SerializableAttribute() SerializableAttribute()

初始化 SerializableAttribute 類別的新執行個體。Initializes a new instance of the SerializableAttribute class.

方法

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

傳回值,這個值指出此執行個體是否與指定的物件相等。Returns a value that indicates whether this instance is equal to a specified object.

(Inherited from Attribute)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

傳回這個執行個體的雜湊碼。Returns the hash code for this instance.

(Inherited from Attribute)
GetType() GetType() GetType() GetType()

取得目前執行個體的 TypeGets the Type of the current instance.

(Inherited from Object)
IsDefaultAttribute() IsDefaultAttribute() IsDefaultAttribute() IsDefaultAttribute()

在衍生類別中覆寫時,表示這個執行個體的值是衍生類別的預設值。When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(Inherited from Attribute)
Match(Object) Match(Object) Match(Object) Match(Object)

在衍生類別中覆寫時,會傳回值,表示這個執行個體是否等於指定物件。When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(Inherited from Attribute)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

建立目前 Object 的淺層複製。Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

傳回代表目前物件的字串。Returns a string that represents the current object.

(Inherited from Object)

明確介面實作

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) _Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) _Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) _Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

將一組名稱對應至一組對應的分派識別項 (Dispatch Identifier)。Maps a set of names to a corresponding set of dispatch identifiers.

(Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

擷取物件的類型資訊,可以用來取得介面的類型資訊。Retrieves the type information for an object, which can be used to get the type information for an interface.

(Inherited from Attribute)
_Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32)

擷取物件提供的類型資訊介面數目 (0 或 1)。Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

提供物件所公開的屬性和方法的存取權。Provides access to properties and methods exposed by an object.

(Inherited from Attribute)

屬性

TypeId TypeId TypeId TypeId

在衍生類別中實作時,取得這個 Attribute 的唯一識別碼。When implemented in a derived class, gets a unique identifier for this Attribute.

(Inherited from Attribute)

適用於

另請參閱