Application in .NET with source code to create and manipulate xml file

Question

Hi all,

I want a web application in ASP.NET(any version below VS 2010) with source code ready to use in which i can create a xml file and edit its node and enter values and save that modified xml. 

Somewhat similar to the tool found at below link:

http://www.finaldownload.com/components_libraries_xml_viewer-23601-download.html