XmlAttributes.XmlText Property
Definition
Important
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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; }
public System.Xml.Serialization.XmlTextAttribute? XmlText { get; set; }
member this.XmlText : System.Xml.Serialization.XmlTextAttribute with get, set
Public Property XmlText As XmlTextAttribute
Property Value
An XmlTextAttribute that overrides the default serialization of a public property or field.
Examples
The following example serializes the class named Group
, which contains a field named Comment
. To override the default way the XmlSerializer serializes the field, the example creates an XmlAttributeOverrides and an XmlAttributes object. 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. 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.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
Remarks
By default, a public field or public read/write property is serialized as an XML element by the XmlSerializer. However, it can force the field or property to be serialized as XML text by applying an XmlTextAttribute to the field or property.
Note
The XmlTextAttribute cannot be applied to a field or property that returns an array.
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. 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.
Applies to
.NET