C#对FTP进行上传下载操作

private void bt_ftp_Click(object sender, EventArgs e)
{
try
{

引用WinSCP类

// Setup session options

SessionOptions sessionOptions = new SessionOptions
{
Protocol = Protocol.Ftp,
HostName = "ftp域名",
PortNumber = 21,// SFTP默认端口22
UserName = "用户名",
Password = "密码"
};

using (Session session = new Session())
{

// Connect
session.Open(sessionOptions);

// Upload files
TransferOptions transferOptions = new TransferOptions();
transferOptions.TransferMode = TransferMode.Binary;

// remove:bool，成功后是否删除本地文件，默认false
var transferResult = session.PutFiles(@"D:\123456*", "/", false, transferOptions);//upload
transferResult = session.GetFiles("/*", "D:\123456789\", true, transferOptions);//download

// Throw on any error
transferResult.Check();

// Print results
foreach (TransferEventArgs transfer in transferResult.Failures)
{
Console.WriteLine("DownLoad of {0} Error!", transfer.FileName);
}
MessageBox.Show("FTP信息处理成功！");
}

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