using System;
using WinSCP;

class Example
{
    public static int Main()
    {
        try
        {
            // Setup session options
            SessionOptions sessionOptions = new SessionOptions {
                Protocol = Protocol.Sftp,
                HostName = "example.com",
                UserName = "user",
                Password = "mypassword",
                SshHostKeyFingerprint = "ssh-rsa 2048 xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx"
            };

            using (Session session = new Session())
            {
                // Connect
                session.Open(sessionOptions);

                RemoteDirectoryInfo directory = session.ListDirectory("/home/martin/public_html");

                foreach (RemoteFileInfo fileInfo in directory.Files)
                {
                    Console.WriteLine("{0} with size {1}, permissions {2} and last modification at {3}",
                        fileInfo.Name, fileInfo.Length, fileInfo.FilePermissions, fileInfo.LastWriteTime);
                }
            }

            return 0;
        }
        catch (Exception e)
        {
            Console.WriteLine("Error: {0}", e);
            return 1;
        }
    }
}

// Download the file and throw on any error
session.GetFiles(remotePath, localPath).Check();

public class HostSFTP
{
    public List<string> downloadedFiles = new List<string>();

    public void FileSync(string hostName, string userName, string password, bool GiveUpSecurity, string SshHostKeyFingerprint, int port, string local, string remote, string exe, string fileMask)
    {
        SessionOptions sOpt = new SessionOptions
        {
            Protocol = Protocol.Sftp,
            HostName = hostName,
            UserName = userName,
            Password = password,
            GiveUpSecurityAndAcceptAnySshHostKey = GiveUpSecurity, -- You can choose to ignore sshhostupdates.
            SshHostKeyFingerprint = SshHostKeyFingerprint,
            PortNumber = port
        };

        try
        {
            using (Session session = new Session())
            {
                session.ExecutablePath = exe;// @"C:%Program folder%Winscpwinscp.exe";
                session.FileTransferred += FileTransferred;
                session.Open(sOpt);

                //Sync folders
                TransferOptions transferOpt = new TransferOptions();
                transferOpt.TransferMode = TransferMode.Binary;
                transferOpt.FileMask = fileMask;// @"filename.*|*"  includes | excludes

                SynchronizationResult syncResult;
                syncResult =
                    session.SynchronizeDirectories(
                        SynchronizationMode.Local,
                        local,
                        remote,
                        false,
                        false,
                        SynchronizationCriteria.None,
                        transferOpt);

                syncResult.Check();
            }
        }

        catch (Exception e)
        {
            Console.WriteLine("Error : {0}", e);
        }
    }

    public void FileTransferred(object sender, TransferEventArgs e)
    {
        if (e.Error == null)
        {
            Console.WriteLine("Download of {0} succeeded", e.FileName);
            downloadedFiles.Add(e.FileName.Replace(@"/", ""));
        }
        else
        {
            Console.WriteLine("Download of {0} failed: {1}", e.FileName, e.Error);
        }
        if (e.Chmod != null)
        {
            if (e.Chmod.Error == null)
            {
                Console.WriteLine("Permisions of {0} set to {1}", e.Chmod.FileName, e.Chmod.FilePermissions);
            }
            else
            {
                Console.WriteLine("Setting permissions of {0} failed: {1}", e.Chmod.FileName, e.Chmod.Error);
            }
        }
        else
        {
            Console.WriteLine("Permissions of {0} kept with their defaults", e.Destination);
        }

        if (e.Touch != null)
        {
            if (e.Touch.Error == null)
            {
                Console.WriteLine("Timestamp of {0} set to {1}", e.Touch.FileName, e.Touch.LastWriteTime);
            }
            else
            {
                Console.WriteLine("Setting timestamp of {0} failed: {1}", e.Touch.FileName, e.Touch.Error);
            }
        }
        else
        {
            // This should never happen with Session.SynchronizeDirectories
            Console.WriteLine("Timestamp of {0} kept with its default (current time)", e.Destination);
        }
    }
}