how to get the filename using path in vb.net using c#

I am retrieving the drafts folder file name from c folder.

In c folder file as follows

C:\Drafts\AFF.htm.

for retrieving the filename code as follows in vb.net

Dim strpath As String = "C:\Drafts\"

Foldername = Directory.GetFiles(strpath, "*", SearchOption.TopDirectoryOnly)

When i run and debug in foldername path as follows

C:\Drafts\AFF.htm.

i have one label in that label i want to store the AFF name.

after 2nd backslash AFF is there.

i want to retrieve AFF after 2nd slash AFF is there.

C:\Drafts\AFF.htm

From the above path how to get AFF name after Back Slash.

for that how can i write the code in vb.net.