XmlTextAttribute Construtores

Referência

Definição

Namespace:: System.Xml.Serialization

Assembly:: System.Xml.XmlSerializer.dll

Assembly:: System.Xml.ReaderWriter.dll

Assembly:: System.Xml.dll

Assembly:: netstandard.dll

Importante

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Inicializa uma nova instância da classe XmlTextAttribute.

Sobrecargas

XmlTextAttribute()	Inicializa uma nova instância da classe XmlTextAttribute.
XmlTextAttribute(Type)	Inicializa uma nova instância da classe XmlTextAttribute.

XmlTextAttribute()

Inicializa uma nova instância da classe XmlTextAttribute.

public:
 XmlTextAttribute();

public XmlTextAttribute ();

Public Sub New ()

Exemplos

O exemplo a seguir serializa uma classe que contém um campo público, chamado Comment. O exemplo aplica-se a um XmlTextAttribute campo, substituindo assim sua serialização como um elemento XML e, em vez disso, serializando-o como texto XML.

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

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

public ref class Group
{
public:
   String^ GroupName;
   String^ Comment;
};

public ref class Test
{
public:
   static void main()
   {
      Test^ t = gcnew Test;
      t->SerializerOrder( "TextOverride.xml" );
   }

   /* Create an instance of the XmlSerializer class that overrides 
          the default way it serializes an object. */
   XmlSerializer^ CreateOverrider()
   {
      /* Create instances of the XmlAttributes and 
              XmlAttributeOverrides classes. */
      XmlAttributes^ attrs = gcnew XmlAttributes;
      XmlAttributeOverrides^ xOver = gcnew XmlAttributeOverrides;

      /* Create an XmlTextAttribute to override the default 
              serialization process. */
      XmlTextAttribute^ xText = gcnew XmlTextAttribute;
      attrs->XmlText = xText;

      // Add the XmlAttributes to the XmlAttributeOverrides.
      xOver->Add( Group::typeid, "Comment", attrs );

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

   void SerializerOrder( String^ filename )
   {
      // Create an XmlSerializer instance.
      XmlSerializer^ xSer = CreateOverrider();

      // Create the object and serialize it.
      Group^ myGroup = gcnew Group;
      myGroup->Comment = "This is a great product.";
      TextWriter^ writer = gcnew StreamWriter( filename );
      xSer->Serialize( writer, myGroup );
   }
};

int main()
{
   Test::main();
}

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

public class Group {
    public string GroupName;
    public string Comment;
}

public class Test {
    public static void Main() {
        Test t = new Test();
        t.SerializerOrder("TextOverride.xml");
    }
    /* Create an instance of the XmlSerializer class that overrides
       the default way it serializes an object. */
    public XmlSerializer CreateOverrider() {
        /* Create instances of the XmlAttributes and
        XmlAttributeOverrides classes. */

        XmlAttributes attrs = new XmlAttributes();

        XmlAttributeOverrides xOver = new XmlAttributeOverrides();

        /* Create an XmlTextAttribute to override the default
        serialization process. */
        XmlTextAttribute xText = new XmlTextAttribute();
        attrs.XmlText = xText;

        // Add the XmlAttributes to the XmlAttributeOverrides.
        xOver.Add(typeof(Group), "Comment", attrs);

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

    public void SerializerOrder(string filename) {
        // Create an XmlSerializer instance.
        XmlSerializer xSer = CreateOverrider();

        // Create the object and serialize it.
        Group myGroup = new Group();
        myGroup.Comment = "This is a great product.";

        TextWriter writer = new StreamWriter(filename);
        xSer.Serialize(writer, myGroup);
    }
}

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


Public Class Group
    Public GroupName As String
    Public Comment As String
End Class

Public Class Test
    
    Public Shared Sub Main()
        Dim t As New Test()
        t.SerializerOrder("TextOverride.xml")
    End Sub
    
    ' Create an instance of the XmlSerializer class that overrides
    ' the default way it serializes an object. 
    Public Function CreateOverrider() As XmlSerializer
        ' CreatE instances of the XmlAttributes and
        ' XmlAttributeOverrides classes.
        
        Dim attrs As New XmlAttributes()        
        Dim xOver As New XmlAttributeOverrides()
        
        ' Create an XmlTextAttribute to override the default
        ' serialization process. 
        Dim xText As New XmlTextAttribute()
        attrs.XmlText = xText
        
        ' Add the XmlAttributes to the XmlAttributeOverrides.
        xOver.Add(GetType(Group), "Comment", attrs)
        
        ' Create the XmlSerializer, and return it.
        Dim xSer As New XmlSerializer(GetType(Group), xOver)
        Return xSer
    End Function
    
    
    Public Sub SerializerOrder(ByVal filename As String)
        ' Create an XmlSerializer instance.
        Dim xSer As XmlSerializer = CreateOverrider()
        
        ' Create the object and serialize it.
        Dim myGroup As New Group()
        myGroup.Comment = "This is a great product."
        
        Dim writer As New StreamWriter(filename)
        xSer.Serialize(writer, myGroup)
    End Sub
End Class

Comentários

Você pode substituir a maneira como serializa XmlSerializer um campo público ou uma propriedade pública de leitura/gravação criando um XmlAttributese definindo sua XmlText propriedade como um XmlTextAttribute. Para obter mais detalhes, consulte a XmlAttributeOverrides classe.

Aplica-se a

XmlTextAttribute(Type)

Inicializa uma nova instância da classe XmlTextAttribute.

public:
 XmlTextAttribute(Type ^ type);

public XmlTextAttribute (Type type);

public XmlTextAttribute (Type? type);

new System.Xml.Serialization.XmlTextAttribute : Type -> System.Xml.Serialization.XmlTextAttribute

Public Sub New (type As Type)

Parâmetros

type: Type

O Type do membro a ser serializado.

Exemplos

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

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

public ref class Group1
{
public:

   // The XmlTextAttribute with type set to string informs the 
   // XmlSerializer that strings should be serialized as XML text.

   [XmlText(String::typeid)]
   [XmlElement(Int32::typeid)]
   [XmlElement(Double::typeid)]
   array<Object^>^All;
   Group1()
   {
      array<Object^>^temp = {321,"One",2,3.0,"Two"};
      All = temp;
   }
};

public enum class GroupType
{
   Small, Medium, Large
};

public ref class Group2
{
public:

   [XmlText(Type=GroupType::typeid)]
   GroupType Type;
};

public ref class Group3
{
public:

   [XmlText(Type=DateTime::typeid)]
   DateTime CreationTime;
   Group3()
   {
      CreationTime = DateTime::Now;
   }
};

public ref class Test
{
public:
   static void main()
   {
      Test^ t = gcnew Test;
      t->SerializeArray( "XmlText1.xml" );
      t->SerializeEnum( "XmlText2.xml" );
      t->SerializeDateTime( "XmlText3.xml" );
   }

private:
   void SerializeArray( String^ filename )
   {
      XmlSerializer^ ser = gcnew XmlSerializer( Group1::typeid );
      Group1^ myGroup1 = gcnew Group1;
      TextWriter^ writer = gcnew StreamWriter( filename );
      ser->Serialize( writer, myGroup1 );
      writer->Close();
   }

   void SerializeEnum( String^ filename )
   {
      XmlSerializer^ ser = gcnew XmlSerializer( Group2::typeid );
      Group2^ myGroup = gcnew Group2;
      myGroup->Type = GroupType::Medium;
      TextWriter^ writer = gcnew StreamWriter( filename );
      ser->Serialize( writer, myGroup );
      writer->Close();
   }

   void SerializeDateTime( String^ filename )
   {
      XmlSerializer^ ser = gcnew XmlSerializer( Group3::typeid );
      Group3^ myGroup = gcnew Group3;
      TextWriter^ writer = gcnew StreamWriter( filename );
      ser->Serialize( writer, myGroup );
      writer->Close();
   }
};

int main()
{
   Test::main();
}

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

public class Group1{
   // The XmlTextAttribute with type set to string informs the
   // XmlSerializer that strings should be serialized as XML text.
   [XmlText(typeof(string))]
   [XmlElement(typeof(int))]
   [XmlElement(typeof(double))]
   public object [] All= new object []{321, "One", 2, 3.0, "Two" };
}

public class Group2{
   [XmlText(Type = typeof(GroupType))]
   public GroupType Type;
}
public enum GroupType{
   Small,
   Medium,
   Large
}

public class Group3{
   [XmlText(Type=typeof(DateTime))]
   public DateTime CreationTime = DateTime.Now;
}

public class Test{
   static void Main(){
      Test t = new Test();
      t.SerializeArray("XmlText1.xml");
      t.SerializeEnum("XmlText2.xml");
      t.SerializeDateTime("XmlText3.xml");
   }

   private void SerializeArray(string filename){
      XmlSerializer ser = new XmlSerializer(typeof(Group1));
      Group1 myGroup1 = new Group1();

      TextWriter writer = new StreamWriter(filename);

      ser.Serialize(writer, myGroup1);
      writer.Close();
   }

   private void SerializeEnum(string filename){
      XmlSerializer ser = new XmlSerializer(typeof(Group2));
      Group2 myGroup = new Group2();
      myGroup.Type = GroupType.Medium;
      TextWriter writer = new StreamWriter(filename);

      ser.Serialize(writer, myGroup);
      writer.Close();
   }

   private void SerializeDateTime(string filename){
      XmlSerializer ser = new XmlSerializer(typeof(Group3));
      Group3 myGroup = new Group3();
      TextWriter writer = new StreamWriter(filename);

      ser.Serialize(writer, myGroup);
      writer.Close();
   }
}

Imports System.Xml.Serialization
Imports System.IO


Public Class Group1
   ' The XmlTextAttribute with type set to String informs the 
   ' XmlSerializer that strings should be serialized as XML text.
   <XmlText(GetType(String)), _
   XmlElement(GetType(integer)), _  
   XmlElement(GetType(double))> _
   public All () As Object = _
   New Object (){321, "One", 2, 3.0, "Two" }
End Class


Public Class Group2
   <XmlText(GetType(GroupType))> _
   public Type As GroupType 
End Class

Public Enum GroupType
   Small
   Medium
   Large
End Enum

Public Class Group3
   <XmlText(GetType(DateTime))> _
   Public CreationTime As DateTime = DateTime.Now
End Class

Public Class Test
   Shared Sub Main()
      Dim t As Test = New Test()
      t.SerializeArray("XmlText1.xml")
      t.SerializeEnum("XmlText2.xml")
      t.SerializeDateTime("XmlText3.xml")
   End Sub

   Private Sub SerializeArray(filename As String)
      Dim ser As XmlSerializer = New XmlSerializer(GetType(Group1))
      Dim myGroup1 As Group1 = New Group1()

      Dim writer As TextWriter = New StreamWriter(filename)

      ser.Serialize(writer, myGroup1)
      writer.Close()
   End Sub

   Private Sub SerializeEnum(filename As String)
      Dim ser As XmlSerializer = New XmlSerializer(GetType(Group2))
      Dim myGroup As Group2 = New Group2()
      myGroup.Type = GroupType.Medium
      Dim writer As TextWriter = New StreamWriter(filename)

      ser.Serialize(writer, myGroup)
      writer.Close()
   End Sub

   Private Sub SerializeDateTime(filename As String)
      Dim ser As XmlSerializer = new XmlSerializer(GetType(Group3))
      Dim myGroup As Group3 = new Group3()
      Dim writer As TextWriter = new StreamWriter(filename)

      ser.Serialize(writer, myGroup)
      writer.Close()
   End Sub
End Class

Comentários

Aplica-se a

XmlTextAttribute Construtores

Definição

Sobrecargas

XmlTextAttribute()

Exemplos

Comentários

Aplica-se a

XmlTextAttribute(Type)

Parâmetros

Exemplos

Comentários

Aplica-se a

Recursos adicionais