(Mono C#) Get Number of FIles in Directory, not including sub-directories

Mono C# example demonstrating how to get the number of files in a directory not including sub-directories.

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// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Ftp2 ftp = new Chilkat.Ftp2();

ftp.Hostname = "ftp.example.com";
ftp.Username = "login";
ftp.Password = "password";

// Connect and login to the FTP server.
bool success = ftp.Connect();
if (success != true) {
    Debug.WriteLine(ftp.LastErrorText);
    return;
}

// The ListPattern property is our directory listing filter.
// The default value is "*", which includes everything.
Debug.WriteLine(ftp.ListPattern);

// Fetch the current remote directory contents by
// calling GetDirCount
int i;
int n;
n = ftp.GetDirCount();
if (n < 0) {
    Debug.WriteLine(ftp.LastErrorText);
    return;
}

if (n > 0) {
    // Loop over the directory contents, incrementing the count
    // each time it is NOT a directory.
    int fileCount = 0;
    for (i = 0; i <= n - 1; i++) {

        // Is this NOT a sub-directory?
        if (ftp.GetIsDirectory(i) != true) {
            fileCount = fileCount + 1;
            // Display the filename
            Debug.WriteLine(ftp.GetFilename(i));
        }

    }

    Debug.WriteLine("Total number of files = " + Convert.ToString(fileCount));
}

success = ftp.Disconnect();