XmlAttributes.XmlText XmlAttributes.XmlText XmlAttributes.XmlText XmlAttributes.XmlText Property

定義

取得或設定物件,指定 XmlSerializer 將公用欄位或公用讀取/寫入屬性序列化為 XML 文字。Gets or sets an object that instructs the XmlSerializer to serialize a public field or public read/write property as XML text.

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; }
member this.XmlText : System.Xml.Serialization.XmlTextAttribute with get, set
Public Property XmlText As XmlTextAttribute

屬性值

XmlTextAttribute,覆寫公用屬性或欄位的預設序列化。An XmlTextAttribute that overrides the default serialization of a public property or field.

範例

下列範例會序列化名為的類別Group,其中包含一個名為欄位CommentThe following example serializes the class named Group, which contains a field named Comment. 若要覆寫預設方式XmlSerializer序列化欄位中,此範例會建立XmlAttributeOverridesXmlAttributes物件。To override the default way the XmlSerializer serializes the field, the example creates an XmlAttributeOverrides and an XmlAttributes object. 這個範例會建立XmlTextAttribute物件,它會指派給XmlText屬性,並將XmlAttributes物件 (具有要序列化成 XML 文字的欄位名稱)XmlAttributeOverrides物件。The example then creates an XmlTextAttribute object, which it assigns to the XmlText property, and adds the XmlAttributes object (with the name of the field to be serialized as XML text) to the XmlAttributeOverrides object. 此範例會建立最後XmlSerializer使用XmlAttributeOverrides物件。Lastly the example creates an XmlSerializer using the XmlAttributeOverrides object.

#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
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

備註

根據預設,公用欄位或公用讀取/寫入屬性序列化為 XML 項目由XmlSerializerBy default, a public field or public read/write property is serialized as an XML element by the XmlSerializer. 不過,它可以在其中強制欄位或屬性序列化為 XML 文字,藉由套用XmlTextAttribute欄位或屬性。However, it can force the field or property to be serialized as XML text by applying an XmlTextAttribute to the field or property.

注意

XmlTextAttribute無法套用至欄位或屬性會傳回陣列。The XmlTextAttribute cannot be applied to a field or property that returns an array.

若要覆寫預設的序列化欄位或屬性 (也就不會傳回陣列),建立XmlTextAttribute並將它指派給XmlText屬性XmlAttributes物件。To override the default serialization of a field or property (that does not return an array), create an XmlTextAttribute and assign it to the XmlText property of an XmlAttributes object. 新增XmlAttributes物件至XmlAttributeOverrides物件,並指定類型的物件,其中包含覆寫的欄位或屬性,並覆寫的欄位或屬性的名稱。Add the XmlAttributes object to an XmlAttributeOverrides object and specify the type of the object that contains the overridden field or property, and the name of the overridden field or property.

適用於