C# FTP文件上传类

//调用方法
FtpUploadFile("192.168.1.60", "zcy", "123",@"c:\1.txt");

#region FTP上传文件

/// <summary>
/// FTP上传文件
/// </summary>
/// <param name="ftpServerIp">FTP服务器IP</param>
/// <param name="ftpUserId">FTP登录帐号</param>
/// <param name="ftpPassword">FTP登录密码</param>
/// <param name="filename">上文件文件名（绝对路径）</param>
private static void FtpUploadFile(string ftpServerIp, string ftpUserId, string ftpPassword, string filename)
{
//上传文件流
FileStream uploadFileStream = null;
//FTP流
Stream ftpStream = null;
try
{
//获取上传文件
var uploadFile = new FileInfo(filename);

//创建FtpWebRequest对象
var ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIp + "/" + uploadFile.Name));

//FTP登录
ftpRequest.Credentials = new NetworkCredential(ftpUserId, ftpPassword);

// 默认为true，连接不会被关闭
// 在一个命令之后被执行
ftpRequest.KeepAlive = false;

//FTP请求执行方法
ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;

// 指定数据传输类型
ftpRequest.UseBinary = true;

// 上传文件时通知服务器文件的大小
ftpRequest.ContentLength = uploadFile.Length;

// 缓冲大小设置为2kb
const int buffLength = 2048;

var buff = new byte[buffLength];

// 打开一个文件流读上传的文件
uploadFileStream = uploadFile.OpenRead();

// 把上传的文件写入流
ftpStream = ftpRequest.GetRequestStream();

// 每次读文件流的2kb
var contentLen = uploadFileStream.Read(buff, 0, buffLength);

// 流内容没有结束
while (contentLen != 0)
{
// 把内容从file stream 写入 upload stream
ftpStream.Write(buff, 0, contentLen);
contentLen = uploadFileStream.Read(buff, 0, buffLength);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (uploadFileStream != null)
{
uploadFileStream.Close();
}
if (ftpStream != null)
{
ftpStream.Close();
}
}
}
#endregion