XmlAttributes.XmlRoot Property


Gets or sets an object that specifies how the XmlSerializer serializes a class as an XML root element.

Namespace:   System.Xml.Serialization
Assembly:  System.Xml (in System.Xml.dll)

public XmlRootAttribute XmlRoot { get; set; }

Property Value

Type: System.Xml.Serialization.XmlRootAttribute

An XmlRootAttribute that overrides a class attributed as an XML root element.

The following example creates an XmlAttributeOverrides object, an XmlAttributes object, and an XmlRootAttribute object. The example assigns the XmlRootAttribute to the XmlRoot property of the XmlAttributes object, and adds the XmlAttributes object to the XmlAttributeOverrides object. Lastly, the example gets the XmlAttributes object by passing the Type of the serialized class to the XmlAttributeOverrides object. (In this example, the Type is Group.)

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

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

public class Test
   public static void Main()
      Test t = new Test();

   // Return an XmlSerializer for overriding attributes.
   public XmlSerializer CreateOverrider()
      // Create the XmlAttributes and XmlAttributeOverrides objects.
      XmlAttributes attrs = new XmlAttributes();
      XmlAttributeOverrides xOver = new XmlAttributeOverrides();

      XmlRootAttribute xRoot = new XmlRootAttribute();

      // Set a new Namespace and ElementName for the root element.
      xRoot.Namespace = "http://www.cpandl.com";
      xRoot.ElementName = "NewGroup";
      attrs.XmlRoot = xRoot;

      /* Add the XmlAttributes object to the XmlAttributeOverrides. 
         No  member name is needed because the whole class is 
         overridden. */
      xOver.Add(typeof(Group), attrs);

      // Get the XmlAttributes object, based on the type.
      XmlAttributes tempAttrs;
      tempAttrs = xOver[typeof(Group)];

      // Print the Namespace and ElementName of the root.

      XmlSerializer xSer = new XmlSerializer(typeof(Group), xOver);
      return xSer;

   public void SerializeObject(string filename)
      // Create the XmlSerializer using the CreateOverrider method.
      XmlSerializer xSer = CreateOverrider();

      // Create the object to serialize.
      Group myGroup = new Group();
      myGroup.GroupName = ".NET";
      myGroup.GroupCode = 123;

      // To write the file, a TextWriter is required.
      TextWriter writer = new StreamWriter(filename);

      // Serialize the object and close the TextWriter.
      xSer.Serialize(writer, myGroup);

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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