The application xsd.exe, which is included with Visual Studio, can generate strongly-typed classes from XML files. The purpose of the sample XML file is to provide examples of all the node types that you want your application to deal with. You can also run your application on any other files that use the same node types. In the hand-written code, you can use these classes to navigate the XML file. In this example project, a template reads a sample XML file, and generates classes that correspond to each type of node. It is therefore very easy to make programming mistakes such as expecting the wrong type of child node, or the wrong attributes. Unfortunately, all the nodes have the same type, XmlNode. The System.Xml namespace provides comprehensive tools for loading an XML document and then navigating it freely in memory. This walkthrough demonstrates this benefit.
#Code on time generate code
Contrast this with the alternative technique of writing a completely generic program that accepts a configuration file, which is more flexible, but results in code that is neither so easy to read and change, nor has such good performance.
Code generation allows you to produce program code that is strongly typed, and yet can be easily changed when the source model changes.
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