XmlAttributes.XmlText Свойство

public:
 property System::Xml::Serialization::XmlTextAttribute ^ XmlText { System::Xml::Serialization::XmlTextAttribute ^ get(); void set(System::Xml::Serialization::XmlTextAttribute ^ value); };

public System.Xml.Serialization.XmlTextAttribute XmlText { get; set; }

public System.Xml.Serialization.XmlTextAttribute? XmlText { get; set; }

member this.XmlText : System.Xml.Serialization.XmlTextAttribute with get, set

Public Property XmlText As XmlTextAttribute

Значение свойства

XmlTextAttribute, переопределяющий сериализацию по умолчанию для открытого свойства или поля.

Примеры

В следующем примере выполняется сериализация класса с именем Group, который содержит поле с именем Comment. Чтобы переопределить стандартный способ XmlSerializer сериализации поля, в примере создается XmlAttributeOverrides объект и XmlAttributes . Затем в примере создается XmlTextAttribute объект, который присваивается свойству XmlText , и добавляется XmlAttributes объект (с именем поля, сериализуемого в виде XML-текста) в XmlAttributeOverrides объект . Наконец, в примере создается XmlSerializer с помощью XmlAttributeOverrides объекта .

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

using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Xml::Serialization;

// This is the class that will be serialized.
public ref class Group
{
public:
   String^ GroupName;

   // This field will be serialized as XML text. 
   String^ Comment;
};

// Return an XmlSerializer to be used for overriding. 
XmlSerializer^ CreateOverrider()
{
   // Create the XmlAttributeOverrides and XmlAttributes objects.
   XmlAttributeOverrides^ xOver = gcnew XmlAttributeOverrides;
   XmlAttributes^ xAttrs = gcnew XmlAttributes;

   /* Create an XmlTextAttribute and assign it to the XmlText 
      property. This instructs the XmlSerializer to treat the 
      Comment field as XML text. */
   XmlTextAttribute^ xText = gcnew XmlTextAttribute;
   xAttrs->XmlText = xText;
   xOver->Add( Group::typeid, "Comment", xAttrs );

   // Create the XmlSerializer, and return it.
   return gcnew XmlSerializer( Group::typeid,xOver );
}

void SerializeObject( String^ filename )
{
   // Create an instance of the XmlSerializer class.
   XmlSerializer^ mySerializer = CreateOverrider();

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

   // Create an instance of the class that will be serialized.
   Group^ myGroup = gcnew Group;

   // Set the object properties.
   myGroup->GroupName = ".NET";
   myGroup->Comment = "Great Stuff!";

   // Serialize the class, and close the TextWriter.
   mySerializer->Serialize( writer, myGroup );
   writer->Close();
}

void DeserializeObject( String^ filename )
{
   XmlSerializer^ mySerializer = CreateOverrider();
   FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
   Group^ myGroup = dynamic_cast<Group^>(mySerializer->Deserialize( fs ));
   Console::WriteLine( myGroup->GroupName );
   Console::WriteLine( myGroup->Comment );
}

int main()
{
   SerializeObject( "OverrideText.xml" );
   DeserializeObject( "OverrideText.xml" );
}

using System;
using System.IO;
using System.Xml;
using System.Xml.Serialization;

// This is the class that will be serialized.
public class Group
{
   public string GroupName;

   // This field will be serialized as XML text.
   public string Comment;
}

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

   // Return an XmlSerializer to be used for overriding.
   public XmlSerializer CreateOverrider()
   {
      // Create the XmlAttributeOverrides and XmlAttributes objects.
      XmlAttributeOverrides xOver = new XmlAttributeOverrides();
      XmlAttributes xAttrs = new XmlAttributes();

      /* Create an XmlTextAttribute and assign it to the XmlText
      property. This instructs the XmlSerializer to treat the
      Comment field as XML text. */
      XmlTextAttribute xText = new XmlTextAttribute();
      xAttrs.XmlText = xText;
      xOver.Add(typeof(Group), "Comment", xAttrs);

      // Create the XmlSerializer, and return it.
      return new XmlSerializer(typeof(Group), xOver);
   }

   public void SerializeObject(string filename)
   {
      // Create an instance of the XmlSerializer class.
      XmlSerializer mySerializer =  CreateOverrider();
      // Writing the file requires a TextWriter.
      TextWriter writer = new StreamWriter(filename);

      // Create an instance of the class that will be serialized.
      Group myGroup = new Group();

      // Set the object properties.
      myGroup.GroupName = ".NET";
      myGroup.Comment = "Great Stuff!";
      // Serialize the class, and close the TextWriter.
      mySerializer.Serialize(writer, myGroup);
      writer.Close();
   }

   public void DeserializeObject(string filename)
   {
      XmlSerializer mySerializer = CreateOverrider();
      FileStream fs = new FileStream(filename, FileMode.Open);
      Group myGroup = (Group)
      mySerializer.Deserialize(fs);
      Console.WriteLine(myGroup.GroupName);
      Console.WriteLine(myGroup.Comment);
   }
}

Imports System.IO
Imports System.Xml
Imports System.Xml.Serialization


' This is the class that will be serialized.
Public Class Group
    Public GroupName As String
    
    ' This field will be serialized as XML text. 
    Public Comment As String
End Class


Public Class Run
    
    Public Shared Sub Main()
        Dim test As New Run()
        test.SerializeObject("OverrideText.xml")
        test.DeserializeObject("OverrideText.xml")
    End Sub

        
    ' Return an XmlSerializer to be used for overriding. 
    Public Function CreateOverrider() As XmlSerializer
        ' Create the XmlAttributeOverrides and XmlAttributes objects.
        Dim xOver As New XmlAttributeOverrides()
        Dim xAttrs As New XmlAttributes()
        
        ' Create an XmlTextAttribute and assign it to the XmlText
        ' property. This instructs the XmlSerializer to treat the
        ' Comment field as XML text. 
        Dim xText As New XmlTextAttribute()
        xAttrs.XmlText = xText
        xOver.Add(GetType(Group), "Comment", xAttrs)
        
        ' Create the XmlSerializer, and return it.
        Return New XmlSerializer(GetType(Group), xOver)
    End Function
    
    
    
    Public Sub SerializeObject(ByVal filename As String)
        ' Create an instance of the XmlSerializer class.
        Dim mySerializer As XmlSerializer = CreateOverrider()
        ' Writing the file requires a TextWriter.
        Dim writer As New StreamWriter(filename)
        
        ' Create an instance of the class that will be serialized.
        Dim myGroup As New Group()
        
        ' Set the object properties.
        myGroup.GroupName = ".NET"
        myGroup.Comment = "Great Stuff!"
        ' Serialize the class, and close the TextWriter.
        mySerializer.Serialize(writer, myGroup)
        writer.Close()
    End Sub
    
    
    Public Sub DeserializeObject(ByVal filename As String)
        Dim mySerializer As XmlSerializer = CreateOverrider()
        Dim fs As New FileStream(filename, FileMode.Open)
        Dim myGroup As Group = CType(mySerializer.Deserialize(fs), Group)
        Console.WriteLine(myGroup.GroupName)
        Console.WriteLine(myGroup.Comment)
    End Sub
End Class

Комментарии

По умолчанию открытое поле или открытое свойство для чтения и записи сериализуется как XML-элемент с помощью XmlSerializer. Однако можно принудительно сериализовать поле или свойство в виде XML-текста, применив XmlTextAttribute к полю или свойству .

Чтобы переопределить сериализацию по умолчанию поля или свойства (не возвращающего массив), создайте XmlTextAttribute и назначьте его свойству XmlTextXmlAttributes объекта . Добавьте объект в XmlAttributesXmlAttributeOverrides объект и укажите тип объекта, содержащего переопределенное поле или свойство, а также имя переопределенного поля или свойства.

Применяется к