Xml manipulation in ASP.NET using C#

HI guys,
While working with Xml using C# ,yesterday i found it very simple. We can easily create, modify and delete nodes in Xml files. So its not a bif deal to work with it. So i simply give you an example od working with Xml file which is consumed by a web service and displaying records from Xml into a GridView in asp.net page. Following is the sample.