Explain how to read the contents of an XML document using XMLTextReader.
- There are two methods for reading XML that is XmlDocument class and the XmlReader class.
- Both the XmlReader and XmlDocument classes can read XML from a remote URL just as well as from a local file.
1.
XmlDocument: - It reads the entire XML document into memory and then lets you navigate back and forward to it as you please or even query the document using the XPath technology.
2.
XmlReader:- It is faster and less memory-consuming alternative.
- XmlReader lets you run through the XML document one element at a time, while allowing you to look at the value and then moves to the next element.
- It consumes very little memory because it holds the current element.
- You will only get the relevant elements because you manually checking the values.
Example:XmlTextReader xmlReader = new XmlTextReader(@"c:\abc.xml");
while(xmlReader.Read())
{
Console.Writeln(xmlReader.Value);
}
