Objective
In this article, I will give explanation on XAttribute class. This class is used to construct Attributes in XML Elements.
What is Attribute in XML?
XML Attribute is a Name/Value pair associated with XML elements. XAttribute class represents XML Attributes.
XAttribute class
XAttribute Class is defined as below in namespace System.Xml.Linq. And it inherits the class XObject
| using System;using System.Collections.Generic;using System.Xml;
namespace System.Xml.Linq { public class XAttribute : XObject |
5 Facts
- XElement contains a list of attribute for that element.
- Attributes must have unique name for that particular element.
- Attributes are not node they are Key/value pair associated with an element.
- Attributes are maintained in XML tree in order they are added to the element.
- When attributes are returned from element they are not sorted.
Constructor of XAttribute
If you see above definition of XAttribute class; there are two constructors. Usually we use the second constructor
public XAttribute(XName name, object value);
name: It is unique name of Attribute in XML Element. It is of type XName.
value: It is value of the attribute. It is of type object.
Example
In below example; I am constructing a XElment called xmltree. This root element is having many nested XElement,
- XElement
Data1 is having one XAttribute. Name of the Attribute is “name” and value of attribute is “dj“.
- XElement
Data2 is having two XAttribute. They are ID and DEPT with values U18949 and MIT respectively.
| XElement xmltree = new XElement(“Root”,new XElement(“Data1”, newXAttribute(“name”, “Dj”), 1), new XElement(“Data2”, new XAttribute(“ID”, “U18949”), new XAttribute(“DEPT”,“MIT”),2), new XElement(“Data3”, “3”), new XElement(“Data4”, “4”) ); Console.WriteLine(xmltree); |
Output
Conclusion
In this article; I explained about XAttribute class. In next article, I will explain about XElement class. Thanks for reading.
Dhananjay Kumar 
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