GetFiles does not return file names, rather it returns either relative or absolute filepaths, depending on the form of the directory specification given. For example, assume the calling process has a working directory of "C:\TEMP" and that "C:\TEMP" contains two files: "A.Dat" and "B.Dat".

GetFiles("C:\\TEMP") will return:

"C:\TEMP\A.Dat"

"C:\TEMP\B.Dat"

GetFiles("C:") will return:

"C:A.Dat"

"C:B.Dat"

GetFiles(".") will return:

".\A.Dat"

".\B.Dat"

If you want just file names not paths you can use Path.GetFileName.

More on Path.GetFileName here
http://msdn.microsoft.com/en-us/library/system.io.path.getfilename.aspx