>Is there a function that will return a unique name? I am looking for something like VFP's SYS(2015) function. I want to generate a unique/random name so I can use it for creating a temporary file used to capture some output.

Try this:

   ' Return a random file name
   Public Shared Function GenerateFileName() As String
      Dim lcGuid As String
      lcGuid = Guid.NewGuid.ToString()
      Return lcGuid
   End Function