public static string GenerateRandomFileName(
	string fileextension = "txt"
)

Public Shared Function GenerateRandomFileName ( 
	Optional fileextension As String = "txt"
) As String

public:
static String^ GenerateRandomFileName(
	String^ fileextension = L"txt"
)

static member GenerateRandomFileName : 
        ?fileextension : string 
(* Defaults:
        let _fileextension = defaultArg fileextension "txt"
*)
-> string