Quicktextviewer Files

QuickTextViewer is a application shows you all the .txt files on the computer.By clicking on 
each file a preview of the contents 
of the file are shown.I have also added a update button so changes can be made to the file.
This application is built in c#.net and the user would need to have the .net framework installed on the computer 
in order for the .exe to run.The first treeview give list of the drectories and the second give a list of text file in those
directories.On clicking each textfile a preview is generated on the right of the contents of that file.