XmlAttributes Class

Definition

XmlSerializer가 개체를 직렬화 및 역직렬화하는 방식을 제어하는 특성 개체의 컬렉션을 나타냅니다.Represents a collection of attribute objects that control how the XmlSerializer serializes and deserializes an object.

public ref class XmlAttributes
public class XmlAttributes
type XmlAttributes = class
Public Class XmlAttributes
Inheritance
XmlAttributes

Examples

다음 예제에서는 라는 클래스의 인스턴스를 serialize Orchestra, 라는 단일 필드를 포함 하는 Instruments 배열을 반환 하는 Instrument 개체입니다.The following example serializes an instance of a class named Orchestra, which contains a single field named Instruments that returns an array of Instrument objects. 두 번째 클래스가 Brass 에서 상속 되는 Instrument 클래스입니다.A second class named Brass inherits from the Instrument class. 만듭니다는 XmlAttributes 재정의할 개체를 Instrument 필드를 필드에 적용할 수 있도록 Brass -개체를 추가 합니다 XmlAttributes 개체의 인스턴스를는 XmlAttributeOverrides 클래스.The example creates an XmlAttributes object to override the Instrument field--allowing the field to accept Brass objects--and adds the XmlAttributes object to an instance of the XmlAttributeOverrides class.

#using <System.Xml.dll>
#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml::Serialization;
public ref class Instrument
{
public:
   String^ Name;
};

public ref class Brass: public Instrument
{
public:
   bool IsValved;
};

public ref class Orchestra
{
public:
   array<Instrument^>^Instruments;
};

void SerializeObject( String^ filename )
{
   /* Each overridden field, property, or type requires 
      an XmlAttributes object. */
   XmlAttributes^ attrs = gcnew XmlAttributes;

   /* Create an XmlElementAttribute to override the 
      field that returns Instrument objects. The overridden field
      returns Brass objects instead. */
   XmlElementAttribute^ attr = gcnew XmlElementAttribute;
   attr->ElementName = "Brass";
   attr->Type = Brass::typeid;

   // Add the element to the collection of elements.
   attrs->XmlElements->Add( attr );

   // Create the XmlAttributeOverrides object.
   XmlAttributeOverrides^ attrOverrides = gcnew XmlAttributeOverrides;

   /* Add the type of the class that contains the overridden 
      member and the XmlAttributes to override it with to the 
      XmlAttributeOverrides object. */
   attrOverrides->Add( Orchestra::typeid, "Instruments", attrs );

   // Create the XmlSerializer using the XmlAttributeOverrides.
   XmlSerializer^ s = gcnew XmlSerializer( Orchestra::typeid,attrOverrides );

   // Writing the file requires a TextWriter.
   TextWriter^ writer = gcnew StreamWriter( filename );

   // Create the object that will be serialized.
   Orchestra^ band = gcnew Orchestra;

   // Create an object of the derived type.
   Brass^ i = gcnew Brass;
   i->Name = "Trumpet";
   i->IsValved = true;
   array<Instrument^>^myInstruments = {i};
   band->Instruments = myInstruments;

   // Serialize the object.
   s->Serialize( writer, band );
   writer->Close();
}

void DeserializeObject( String^ filename )
{
   XmlAttributeOverrides^ attrOverrides = gcnew XmlAttributeOverrides;
   XmlAttributes^ attrs = gcnew XmlAttributes;

   // Create an XmlElementAttribute to override the Instrument.
   XmlElementAttribute^ attr = gcnew XmlElementAttribute;
   attr->ElementName = "Brass";
   attr->Type = Brass::typeid;

   // Add the element to the collection of elements.
   attrs->XmlElements->Add( attr );
   attrOverrides->Add( Orchestra::typeid, "Instruments", attrs );

   // Create the XmlSerializer using the XmlAttributeOverrides.
   XmlSerializer^ s = gcnew XmlSerializer( Orchestra::typeid,attrOverrides );
   FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
   Orchestra^ band = dynamic_cast<Orchestra^>(s->Deserialize( fs ));
   Console::WriteLine( "Brass:" );

   /* The difference between deserializing the overridden 
      XML document and serializing it is this: To read the derived 
      object values, you must declare an object of the derived type 
      (Brass), and cast the Instrument instance to it. */
   Brass^ b;
   System::Collections::IEnumerator^ myEnum = band->Instruments->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Instrument^ i = safe_cast<Instrument^>(myEnum->Current);
      b = dynamic_cast<Brass^>(i);
      Console::WriteLine( "{0}\n{1}", b->Name, b->IsValved );
   }
}

int main()
{
   SerializeObject( "Override.xml" );
   DeserializeObject( "Override.xml" );
}
using System;
using System.IO;
using System.Xml.Serialization;

public class Orchestra
{
   public Instrument[] Instruments;
}

public class Instrument
{
   public string Name;
}

public class Brass:Instrument
{
   public bool IsValved;
}

public class Run
{
    public static void Main()
    {
       Run test = new Run();
       test.SerializeObject("Override.xml");
       test.DeserializeObject("Override.xml");
    }

    public void SerializeObject(string filename)
    {
      /* Each overridden field, property, or type requires
      an XmlAttributes object. */
      XmlAttributes attrs = new XmlAttributes();

      /* Create an XmlElementAttribute to override the
      field that returns Instrument objects. The overridden field
      returns Brass objects instead. */
      XmlElementAttribute attr = new XmlElementAttribute();
      attr.ElementName = "Brass";
      attr.Type = typeof(Brass);

      // Add the element to the collection of elements.
      attrs.XmlElements.Add(attr);

      // Create the XmlAttributeOverrides object.
      XmlAttributeOverrides attrOverrides = new XmlAttributeOverrides();

      /* Add the type of the class that contains the overridden
      member and the XmlAttributes to override it with to the
      XmlAttributeOverrides object. */
      attrOverrides.Add(typeof(Orchestra), "Instruments", attrs);

      // Create the XmlSerializer using the XmlAttributeOverrides.
      XmlSerializer s =
      new XmlSerializer(typeof(Orchestra), attrOverrides);

      // Writing the file requires a TextWriter.
      TextWriter writer = new StreamWriter(filename);

      // Create the object that will be serialized.
      Orchestra band = new Orchestra();

      // Create an object of the derived type.
      Brass i = new Brass();
      i.Name = "Trumpet";
      i.IsValved = true;
      Instrument[] myInstruments = {i};
      band.Instruments = myInstruments;

      // Serialize the object.
      s.Serialize(writer,band);
      writer.Close();
   }

   public void DeserializeObject(string filename)
   {
      XmlAttributeOverrides attrOverrides =
         new XmlAttributeOverrides();
      XmlAttributes attrs = new XmlAttributes();

      // Create an XmlElementAttribute to override the Instrument.
      XmlElementAttribute attr = new XmlElementAttribute();
      attr.ElementName = "Brass";
      attr.Type = typeof(Brass);

      // Add the element to the collection of elements.
      attrs.XmlElements.Add(attr);

      attrOverrides.Add(typeof(Orchestra), "Instruments", attrs);

      // Create the XmlSerializer using the XmlAttributeOverrides.
      XmlSerializer s =
      new XmlSerializer(typeof(Orchestra), attrOverrides);

      FileStream fs = new FileStream(filename, FileMode.Open);
      Orchestra band = (Orchestra) s.Deserialize(fs);
      Console.WriteLine("Brass:");

      /* The difference between deserializing the overridden
      XML document and serializing it is this: To read the derived
      object values, you must declare an object of the derived type
      (Brass), and cast the Instrument instance to it. */
      Brass b;
      foreach(Instrument i in band.Instruments)
      {
         b = (Brass)i;
         Console.WriteLine(
         b.Name + "\n" +
         b.IsValved);
      }
   }
}

Imports System.IO
Imports System.Xml.Serialization

Public Class Orchestra
    Public Instruments() As Instrument
End Class

Public Class Instrument
    Public Name As String
End Class

Public Class Brass
    Inherits Instrument
    Public IsValved As Boolean
End Class


Public Class Run
    
    Public Shared Sub Main()
        Dim test As New Run()
        test.SerializeObject("Override.xml")
        test.DeserializeObject("Override.xml")
    End Sub    
    
    Public Sub SerializeObject(ByVal filename As String)
        ' Each overridden field, property, or type requires
        ' an XmlAttributes object. 
        Dim attrs As New XmlAttributes()
        
        ' Create an XmlElementAttribute to override the
        ' field that returns Instrument objects. The overridden field
        ' returns Brass objects instead. 
        Dim attr As New XmlElementAttribute()
        attr.ElementName = "Brass"
        attr.Type = GetType(Brass)
        
        ' Add the element to the collection of elements.
        attrs.XmlElements.Add(attr)
        
        ' Create the XmlAttributeOverrides object.
        Dim attrOverrides As New XmlAttributeOverrides()
        
        ' Add the type of the class that contains the overridden
        ' member and the XmlAttributes to override it with to the
        ' XmlAttributeOverrides object. 
        attrOverrides.Add(GetType(Orchestra), "Instruments", attrs)
        
        ' Create the XmlSerializer using the XmlAttributeOverrides.
        Dim s As New XmlSerializer(GetType(Orchestra), attrOverrides)
        
        ' Writing the file requires a TextWriter.
        Dim writer As New StreamWriter(filename)
        
        ' Create the object that will be serialized.
        Dim band As New Orchestra()
        
        ' Create an object of the derived type.
        Dim i As New Brass()
        i.Name = "Trumpet"
        i.IsValved = True
        Dim myInstruments() As Instrument = {i}
        band.Instruments = myInstruments
        
        ' Serialize the object.
        s.Serialize(writer, band)
        writer.Close()
    End Sub
    
    
    Public Sub DeserializeObject(ByVal filename As String)
        Dim attrOverrides As New XmlAttributeOverrides()
        Dim attrs As New XmlAttributes()
        
        ' Create an XmlElementAttribute to override the Instrument.
        Dim attr As New XmlElementAttribute()
        attr.ElementName = "Brass"
        attr.Type = GetType(Brass)
        
        ' Add the element to the collection of elements.
        attrs.XmlElements.Add(attr)
        
        attrOverrides.Add(GetType(Orchestra), "Instruments", attrs)
        
        ' Create the XmlSerializer using the XmlAttributeOverrides.
        Dim s As New XmlSerializer(GetType(Orchestra), attrOverrides)
        
        Dim fs As New FileStream(filename, FileMode.Open)
        Dim band As Orchestra = CType(s.Deserialize(fs), Orchestra)
        Console.WriteLine("Brass:")
        
        ' The difference between deserializing the overridden
        ' XML document and serializing it is this: To read the derived
        ' object values, you must declare an object of the derived type
        ' (Brass), and cast the Instrument instance to it. 
        Dim b As Brass
        Dim i As Instrument
        For Each i In  band.Instruments
            b = CType(i, Brass)
            Console.WriteLine(b.Name + ControlChars.Cr + _
                              b.IsValved.ToString())
        Next i
    End Sub
End Class

Remarks

만들기는 XmlAttributes 기본값을 재정의 하는 프로세스의 일부인 방식으로 XmlSerializer 클래스 인스턴스를 직렬화 합니다.Creating the XmlAttributes is part of a process that overrides the default way the XmlSerializer serializes class instances. 예를 들어, DLL에는 액세스할 수 없는 원본에서 생성 되는 개체를 serialize 한다고 가정 합니다.For example, suppose you want to serialize an object that is created from a DLL which has an inaccessible source. 사용 하 여는 XmlAttributeOverrides를 보강 하거나 개체 serialize 되는 방식을 제어할 수 있습니다.By using the XmlAttributeOverrides, you can augment or otherwise control how the object is serialized.

멤버는 XmlAttributes 클래스와 serialization을 제어 하는 특성 클래스 패밀리를 직접적으로 부합 합니다.The members of the XmlAttributes class correspond directly to a family of attribute classes that control serialization. 예를 들어,를 XmlText 속성 설정 해야 합니다는 XmlTextAttribute를 지시 하 여 필드 또는 속성의 serialization을 재정의할 수 있습니다는 XmlSerializer XML 텍스트로 속성 값을 serialize 하 합니다.For example, the XmlText property must be set to an XmlTextAttribute, which allows you to override serialization of a field or property by instructing the XmlSerializer to serialize the property value as XML text. Serialization을 제어 하는 특성의 전체 목록은 참조 하세요.를 XmlSerializer입니다.For a complete list of attributes that control serialization, see the XmlSerializer.

사용 하 여 대 한 자세한 내용은 합니다 XmlAttributeOverrides 사용 하 여는 XmlAttributes 클래스를 참조 하십시오 방법:는 XML Stream에 대 한 대체 요소 이름 지정합니다.For more details on using the XmlAttributeOverrides with the XmlAttributes class, see How to: Specify an Alternate Element Name for an XML Stream.

Constructors

XmlAttributes() XmlAttributes 클래스의 새 인스턴스를 초기화합니다.Initializes a new instance of the XmlAttributes class.
XmlAttributes(ICustomAttributeProvider)

XmlAttributes 클래스의 새 인스턴스를 초기화하고 XmlSerializer가 개체를 직렬화 및 역직렬화하는 방법을 사용자 지정합니다.Initializes a new instance of the XmlAttributes class and customizes how the XmlSerializer serializes and deserializes an object.

Properties

XmlAnyAttribute

재정의할 XmlAnyAttributeAttribute를 가져오거나 설정합니다.Gets or sets the XmlAnyAttributeAttribute to override.

XmlAnyElements

재정의할 XmlAnyElementAttribute 개체의 컬렉션을 가져옵니다.Gets the collection of XmlAnyElementAttribute objects to override.

XmlArray

XmlSerializer가 배열을 반환하는 공용 필드 또는 읽기/쓰기 속성을 serialize하는 방식을 지정하는 개체를 가져오거나 설정합니다.Gets or sets an object that specifies how the XmlSerializer serializes a public field or read/write property that returns an array.

XmlArrayItems

XmlSerializer가 공용 필드 또는 읽기/쓰기 속성에 의해 반환된 배열 내에 삽입된 항목을 serialize하는 방식을 지정하는 개체 컬렉션을 가져오거나 설정합니다.Gets or sets a collection of objects that specify how the XmlSerializer serializes items inserted into an array returned by a public field or read/write property.

XmlAttribute

XmlSerializer가 공용 필드 또는 공용 읽기/쓰기 속성을 XML 특성으로 serialize하는 방식을 지정하는 개체를 가져오거나 설정합니다.Gets or sets an object that specifies how the XmlSerializer serializes a public field or public read/write property as an XML attribute.

XmlChoiceIdentifier

일련의 선택을 명확하게 구별하는 개체를 가져오거나 설정합니다.Gets or sets an object that allows you to distinguish between a set of choices.

XmlDefaultValue

XML 요소 또는 특성의 기본값을 가져오거나 설정합니다.Gets or sets the default value of an XML element or attribute.

XmlElements

XmlSerializer가 공용 필드 또는 읽기/쓰기 속성을 XML 요소로 serialize하는 방식을 지정하는 개체의 컬렉션을 가져옵니다.Gets a collection of objects that specify how the XmlSerializer serializes a public field or read/write property as an XML element.

XmlEnum

XmlSerializer가 열거형 멤버를 serialize하는 방식을 지정하는 개체를 가져오거나 설정합니다.Gets or sets an object that specifies how the XmlSerializer serializes an enumeration member.

XmlIgnore

XmlSerializer가 공용 필드 또는 읽기/쓰기 속성을 serialize하는지 여부를 지정하는 값을 가져오거나 설정합니다.Gets or sets a value that specifies whether or not the XmlSerializer serializes a public field or public read/write property.

Xmlns

XmlSerializerNamespaces 개체를 반환하는 멤버가 들어 있는 개체가 재정의될 때 모든 네임스페이스 선언을 유지할지 여부를 지정하는 값을 가져오거나 설정합니다.Gets or sets a value that specifies whether to keep all namespace declarations when an object containing a member that returns an XmlSerializerNamespaces object is overridden.

XmlRoot

XmlSerializer가 클래스를 XML 루트 요소로 serialize하는 방식을 지정하는 개체를 가져오거나 설정합니다.Gets or sets an object that specifies how the XmlSerializer serializes a class as an XML root element.

XmlText

XmlSerializer가 공용 필드 또는 공용 읽기/쓰기 속성을 XML 텍스트로 serialize하도록 하는 개체를 가져오거나 설정합니다.Gets or sets an object that instructs the XmlSerializer to serialize a public field or public read/write property as XML text.

XmlType

XmlSerializer가 적용된 클래스를 XmlTypeAttribute가 serialize하는 방식을 지정하는 개체를 가져오거나 설정합니다.Gets or sets an object that specifies how the XmlSerializer serializes a class to which the XmlTypeAttribute has been applied.

Methods

Equals(Object)

지정한 개체와 현재 개체가 같은지 여부를 확인합니다.Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode()

기본 해시 함수로 작동합니다.Serves as the default hash function.

(Inherited from Object)
GetType()

현재 인스턴스의 Type을 가져옵니다.Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone()

현재 Object의 단순 복사본을 만듭니다.Creates a shallow copy of the current Object.

(Inherited from Object)
ToString()

현재 개체를 나타내는 문자열을 반환합니다.Returns a string that represents the current object.

(Inherited from Object)

Applies to

See also