Summary

In this chapter you learned about Extensible Markup Language (XML), a text format for storing and retrieving data. We looked at the rules we need to obey to ensure that XML documents are well-formed, and you saw how to validate them against XSD and XDR schemas.

After learning about the basics of XML you saw how XML can be utilized through code using C# and Visual Studio, and finally you saw how to use XPath to make queries in the XML.

The topics we covered were:

• How to read and write Extensible Markup Language (XML)

• The rules that apply to well-formed XML

• How to validate your XML documents against two types of Schema: XSD and XDR

• How to use .NET to use XML in your programs

• How to search through XML documents using XPath queries

In the next chapter you will learn how to access databases in .Net using ADO.Net. Before you move on you should try the exercises below.