XmlAttributes.XmlText 属性

定义

命名空间:

System.Xml.Serialization

程序集:

System.Xml.XmlSerializer.dll

程序集:

System.Xml.dll

程序集:

netstandard.dll

获取或设置一个对象，该对象指示 XmlSerializer 将公共字段或公共读/写属性串行化为 XML 文本。

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

属性值

XmlTextAttribute

重写公共属性或字段的默认序列化的 XmlTextAttribute。

示例

The following example serializes the class named Group, which contains a field named Comment. 若要替代序列化字段的默认方式XmlSerializer，该示例将创建一个和一个XmlAttributeOverridesXmlAttributes对象。 然后，该示例创建一个 XmlTextAttribute 对象，该对象将分配给 XmlText 该属性，并将 XmlAttributes 该对象 (将字段名称序列化为 XML 文本) 对象 XmlAttributeOverrides 。 最后，该示例使用XmlAttributeOverrides对象创建一个XmlSerializer。

#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

注解

默认情况下，公共字段或公共读/写属性由 XmlSerializer 序列化为 XML 元素。 但是，它可以通过向字段或属性应用字段 XmlTextAttribute 或属性来强制将字段或属性序列化为 XML 文本。

备注

XmlTextAttribute不能应用于返回数组的字段或属性。

若要替代不返回数组) 的字段或属性 (的默认序列化，请创建一个 XmlTextAttribute 并将其分配给 XmlText 对象的属性 XmlAttributes 。 将 XmlAttributes 对象添加到对象 XmlAttributeOverrides ，并指定包含重写字段或属性的对象的类型以及重写字段或属性的名称。