C# XML Reader Program

I want to have a winforms c# program that will parse XML data from a few specific XML files. The program has a listbox containing the name of the file it should open and parse. I have 50 of these XML files but I will be providing four as a sample files for the project. Ideally I would like the project to use the XmlDocument class (System.XML). Below is a c# project of what the end result should be so please use it as a basis if you can. As well as a few screenshots explaining it's usage and what it would look like when it was finished.