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C# ftp 上传、下载、删除

  1  public class FtpHelper
  2     {
  3         public static readonly FtpHelper Instance = new FtpHelper();
  4 
  5         /// <summary>
  6         /// 取得文件名
  7         /// </summary>
  8         /// <param name="ftpPath">ftp路径</param>
  9         /// <returns></returns>
 10         public string[] GetFilePath(string userId, string pwd, string ftpPath)
 11         {
 12             string[] downloadFiles;
 13             StringBuilder result = new StringBuilder();
 14             FtpWebRequest reqFTP;
 15             try
 16             {
 17                 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath));
 18                 reqFTP.UseBinary = true;
 19                 reqFTP.Credentials = new NetworkCredential(userId, pwd);
 20                 reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
 21                 reqFTP.UsePassive = false;
 22                 WebResponse response = reqFTP.GetResponse();
 23                 StreamReader reader = new StreamReader(response.GetResponseStream());
 24                 string line = reader.ReadLine();
 25                 while (line != null)
 26                 {
 27                     result.Append(line);
 28                     result.Append("
");
 29                     line = reader.ReadLine();
 30                 }
 31                 result.Remove(result.ToString().LastIndexOf('
'), 1);
 32                 reader.Close();
 33                 response.Close();
 34                 return result.ToString().Split('
');
 35             }
 36             catch (Exception ex)
 37             {
 38                 downloadFiles = null;
 39                 return downloadFiles;
 40             }
 41         }
 42 
 43         //ftp的上传功能
 44         public void Upload(string userId, string pwd, string filename, string ftpPath)
 45         {
 46             FileInfo fileInf = new FileInfo(filename);
 47             FtpWebRequest reqFTP;
 48             // 根据uri创建FtpWebRequest对象 
 49             reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath + fileInf.Name));
 50             // ftp用户名和密码
 51             reqFTP.Credentials = new NetworkCredential(userId, pwd);
 52 
 53             reqFTP.UsePassive = false;
 54             // 默认为true，连接不会被关闭
 55             // 在一个命令之后被执行
 56             reqFTP.KeepAlive = false;
 57             // 指定执行什么命令
 58             reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
 59             // 指定数据传输类型
 60             reqFTP.UseBinary = true;
 61             // 上传文件时通知服务器文件的大小
 62             reqFTP.ContentLength = fileInf.Length;
 63             // 缓冲大小设置为2kb
 64             int buffLength = 2048;
 65             byte[] buff = new byte[buffLength];
 66             int contentLen;
 67             // 打开一个文件流 (System.IO.FileStream) 去读上传的文件
 68             FileStream fs = fileInf.OpenRead();
 69             try
 70             {
 71                 // 把上传的文件写入流
 72                 Stream strm = reqFTP.GetRequestStream();
 73                 // 每次读文件流的2kb
 74                 contentLen = fs.Read(buff, 0, buffLength);
 75                 // 流内容没有结束
 76                 while (contentLen != 0)
 77                 {
 78                     // 把内容从file stream 写入 upload stream
 79                     strm.Write(buff, 0, contentLen);
 80                     contentLen = fs.Read(buff, 0, buffLength);
 81                 }
 82                 // 关闭两个流
 83                 strm.Close();
 84                 fs.Close();
 85             }
 86             catch (Exception ex)
 87             {
 88 
 89             }
 90         }
 91 
 92         public void Delete(string userId, string pwd, string ftpPath, string fileName)
 93         {
 94             FtpWebRequest reqFTP;
 95             try
 96             {
 97                 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath + fileName));
 98                 reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
 99                 reqFTP.UseBinary = true;
100                 reqFTP.Credentials = new NetworkCredential(userId, pwd);
101                 reqFTP.UsePassive = false;
102                 FtpWebResponse listResponse = (FtpWebResponse)reqFTP.GetResponse();
103                 string sStatus = listResponse.StatusDescription;
104             }
105             catch (Exception ex)
106             {
107                 throw ex;
108             }
109         }
110 
111         //从ftp服务器上下载文件的功能
112         public void Download(string userId, string pwd, string ftpPath, string filePath, string fileName)
113         {
114             FtpWebRequest reqFTP;
115             try
116             {
117                 FileStream outputStream = new FileStream(filePath + "\" + fileName, FileMode.Create);
118                 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath + fileName));
119                 reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
120                 reqFTP.UseBinary = true;
121                 reqFTP.Credentials = new NetworkCredential(userId, pwd);
122                 reqFTP.UsePassive = false;
123                 FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
124                 Stream ftpStream = response.GetResponseStream();
125                 long cl = response.ContentLength;
126                 int bufferSize = 2048;
127                 int readCount;
128                 byte[] buffer = new byte[bufferSize];
129                 readCount = ftpStream.Read(buffer, 0, bufferSize);
130                 while (readCount > 0)
131                 {
132                     outputStream.Write(buffer, 0, readCount);
133                     readCount = ftpStream.Read(buffer, 0, bufferSize);
134                 }
135                 ftpStream.Close();
136                 outputStream.Close();
137                 response.Close();
138 
139 
140             }
141             catch (Exception ex)
142             {
143                 throw ex;
144             }
145         }
146 
147     }

http://blog.csdn.net/csethcrm/article/details/8139744

========================================

因公司要求，整理公司资源，把现有的资源上传的一个电脑上（在一个同事的电脑上腾出了空间，把所有的资源上传的此电脑上），我在这个电脑上装了SQL2008+serv_u+IIS7,我用的是c# winform+webservice，数据库操作通过webservice进行，上传文件用ftp批量上传，上传整个文件夹，一下是文件夹目录

文件夹总大小100MB以上，有时候单独一个文件也有10-100mb左右，
一下是ftp上传代码

public void Upload(string filename,string foldername)
        {
 
            try
            {
                FileInfo fileInf = new FileInfo(filename);
 
                string uri = "ftp://" + ftpServerIP + "/" + foldername + "/" + fileInf.Name;
 
                Connect(uri);//连接
 
                // 默认为true，连接不会被关闭
                // 在一个命令之后被执行
                reqFTP.KeepAlive = false;
 
                // 指定执行什么命令
 
                reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
 
                // 上传文件时通知服务器文件的大小
 
                reqFTP.ContentLength = fileInf.Length;
 
                // 缓冲大小设置为kb 
 
                int buffLength = 2048;
 
                byte[] buff = new byte[buffLength];
 
                int contentLen;
 
                // 打开一个文件流(System.IO.FileStream) 去读上传的文件
 
                FileStream fs = fileInf.OpenRead();
 
                try
                {
 
                    // 把上传的文件写入流
                    Stream strm = reqFTP.GetRequestStream();
 
                    // 每次读文件流的kb
                    contentLen = fs.Read(buff, 0, buffLength);
 
                    // 流内容没有结束
                    while (contentLen != 0)
                    {
                        // 把内容从file stream 写入upload stream 
                        strm.Write(buff, 0, contentLen);
                        contentLen = fs.Read(buff, 0, buffLength);
                    }
 
                    // 关闭两个流
                    strm.Close();
                    fs.Close();
 
                }
 
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "Upload Error");
 
                }
            }
            catch
            { }
        }

可以通过遍历批量上传文件，但是上传速度很慢，很慢。上传一个文件夹都要花上半天，我想问有没有办法提高上传速度，或者要用别的上传方法。（用别的方法也可以，因为ftp上传我第一次接触，不太熟悉）请各位给个意见，小弟感激不尽！还有上传的时候要加上进度条。请各位大侠高手们帮忙。

private void Form1_Load(object sender, EventArgs e)
        {
            ftpServerIP = "192.168.239.83";
            ftpUserID = "ftptest";
            ftpPassword = "test";
        }
 
        private void btnUpload_Click(object sender, EventArgs e)
        {
            OpenFileDialog opFilDlg = new OpenFileDialog();
            if (opFilDlg.ShowDialog() == DialogResult.OK)
            {
                Upload(opFilDlg.FileName);
            }
        }
 
      
 
        private void Upload(string filename)
        {
            FileInfo fileInf = new FileInfo(filename);
            string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;
            FtpWebRequest reqFTP;
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + fileInf.Name));
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            reqFTP.KeepAlive = false;
            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
            reqFTP.UseBinary = true;
            reqFTP.ContentLength = fileInf.Length;
            int buffLength = 2048;
            byte[] buff = new byte[buffLength];
            int contentLen;
            FileStream fs = fileInf.OpenRead();
            try
            {
                Stream strm = reqFTP.GetRequestStream();
                contentLen = fs.Read(buff, 0, buffLength);
                while (contentLen != 0)
                {
                    strm.Write(buff, 0, contentLen);
                    contentLen = fs.Read(buff, 0, buffLength);
                }
                strm.Close();
                fs.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "上传出错");
                return;
            }
            MessageBox.Show("上传成功!");
        }

参考以上代码。

http://bbs.csdn.net/topics/391033851

=============================================================

net,C#,Ftp各种操作,上传,下载,删除文件,创建目录,删除目录,获得文件列表等

using System;

using System.Collections.Generic;

using System.Text;

using System.Net;

using System.IO;

using System.Windows.Forms;

namespace ConvertData

{

class FtpUpDown

{

string ftpServerIP;

string ftpUserID;

string ftpPassword;

FtpWebRequest reqFTP;

private void Connect(String path)//连接ftp

{

// 根据uri创建FtpWebRequest对象

reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));

// 指定数据传输类型

reqFTP.UseBinary = true;

// ftp用户名和密码

reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);

}

public FtpUpDown(string ftpServerIP, string ftpUserID, string ftpPassword)

{ this.ftpServerIP = ftpServerIP;

this.ftpUserID = ftpUserID;

this.ftpPassword = ftpPassword; }

//都调用这个

private string[] GetFileList(string path, string WRMethods)//上面的代码示例了如何从ftp服务器上获得文件列表

{ string[] downloadFiles; StringBuilder result = new StringBuilder(); try

{ Connect(path);

reqFTP.Method = WRMethods;

WebResponse response = reqFTP.GetResponse();

StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.Default);//中文文件名

string line = reader.ReadLine();

while (line != null)

{

result.Append(line);

result.Append(" ");

line = reader.ReadLine();

}

// to remove the trailing ' '

result.Remove(result.ToString().LastIndexOf(' '), 1);

reader.Close();

response.Close();

return result.ToString().Split(' ');

}

catch (Exception ex)

{ System.Windows.Forms.MessageBox.Show(ex.Message);

downloadFiles = null;

return downloadFiles; } }

public string[] GetFileList(string path)//上面的代码示例了如何从ftp服务器上获得文件列表

{ return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectory); } public string[] GetFileList()//上面的代码示例了如何从ftp服务器上获得文件列表

{ return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectory); }

public void Upload(string filename) //上面的代码实现了从ftp服务器上载文件的功能

{ FileInfo fileInf = new FileInfo(filename);

string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

Connect(uri);//连接

// 默认为true，连接不会被关闭

// 在一个命令之后被执行

reqFTP.KeepAlive = false;

// 指定执行什么命令

reqFTP.Method = WebRequestMethods.Ftp.UploadFile;

// 上传文件时通知服务器文件的大小

reqFTP.ContentLength = fileInf.Length; // 缓冲大小设置为kb int buffLength = 2048; byte[] buff = new byte[buffLength];

int contentLen;

// 打开一个文件流(System.IO.FileStream) 去读上传的文件

FileStream fs = fileInf.OpenRead();

try

{

// 把上传的文件写入流

Stream strm = reqFTP.GetRequestStream();

// 每次读文件流的kb

contentLen = fs.Read(buff, 0, buffLength);

// 流内容没有结束

while (contentLen != 0)

{ // 把内容从file stream 写入upload stream strm.Write(buff, 0, contentLen); contentLen = fs.Read(buff, 0, buffLength);

}

// 关闭两个流

strm.Close();

fs.Close();

}

catch (Exception ex)

{

MessageBox.Show(ex.Message, "Upload Error");

}

public bool Download(string filePath, string fileName, out string errorinfo)////上面的代码实现了从ftp服务器下载文件的功能

{ try

{ String onlyFileName = Path.GetFileName(fileName);

string newFileName = filePath + "\" + onlyFileName;

if (File.Exists(newFileName))

{

errorinfo = string.Format("本地文件{0}已存在,无法下载", newFileName); return false; } string url = "ftp://" + ftpServerIP + "/" + fileName; Connect(url);//连接 reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); Stream ftpStream = response.GetResponseStream(); long cl = response.ContentLength; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize);

FileStream outputStream = new FileStream(newFileName, FileMode.Create); while (readCount > 0)

{ outputStream.Write(buffer, 0, readCount); readCount = ftpStream.Read(buffer, 0, bufferSize); } ftpStream.Close(); outputStream.Close(); response.Close();

errorinfo = "";

return true;

}

catch (Exception ex)

{ errorinfo = string.Format("因{0},无法下载", ex.Message);

return false;

}

//删除文件

public void DeleteFileName(string fileName)

{ try

{ FileInfo fileInf = new FileInfo(fileName);

string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

Connect(uri);//连接

// 默认为true，连接不会被关闭

// 在一个命令之后被执行

reqFTP.KeepAlive = false;

// 指定执行什么命令

reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); response.Close();

}

catch (Exception ex)

{

MessageBox.Show(ex.Message, "删除错误");

}

//创建目录

public void MakeDir(string dirName)

{ try

{ string uri = "ftp://" + ftpServerIP + "/" + dirName;

Connect(uri);//连接

reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

response.Close();

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

//删除目录

public void delDir(string dirName)

{ try

{ string uri = "ftp://" + ftpServerIP + "/" + dirName;

Connect(uri);//连接

reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

response.Close();

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

//获得文件大小

public long GetFileSize(string filename)

{

long fileSize = 0;

try

{

FileInfo fileInf = new FileInfo(filename);

string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

Connect(uri);//连接

reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

fileSize = response.ContentLength;

response.Close();

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

return fileSize;

}

//文件改名

public void Rename(string currentFilename, string newFilename)

{ try

{ FileInfo fileInf = new FileInfo(currentFilename);

string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

Connect(uri);//连接

reqFTP.Method = WebRequestMethods.Ftp.Rename;

reqFTP.RenameTo = newFilename;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

//Stream ftpStream = response.GetResponseStream();

//ftpStream.Close();

response.Close();

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

//获得文件明晰

public string[] GetFilesDetailList()

{

return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails);

}

//获得文件明晰

public string[] GetFilesDetailList(string path)

{

return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectoryDetails);

}

} }

-----------------------

测试

//获得文件列表

private void button1_Click(object sender, EventArgs e)

{

FtpUpDown ftpUpDown = new FtpUpDown(ConvertData.Properties.Settings.Default.ftpServerIP, ConvertData.Properties.Settings.Default.ftpUserID, ConvertData.Properties.Settings.Default.ftpPassword);

string[] str = ftpUpDown.GetFileList("2005");

richTextBox1.Lines = str;

}

//下载

private void button2_Click(object sender, EventArgs e)

{

FtpUpDown ftpUpDown = new FtpUpDown(ConvertData.Properties.Settings.Default.ftpServerIP, ConvertData.Properties.Settings.Default.ftpUserID, ConvertData.Properties.Settings.Default.ftpPassword);

ftpUpDown.Download("c:\", "2007/11/01/57070.pdf");

}

//上传

private void button3_Click(object sender, EventArgs e)

{

FtpUpDown ftpUpDown = new FtpUpDown(ConvertData.Properties.Settings.Default.ftpServerIP, ConvertData.Properties.Settings.Default.ftpUserID, ConvertData.Properties.Settings.Default.ftpPassword);

ftpUpDown.Upload("c:\57070.pdf");

}

=================================================

C# ftp检测服务器是否存在目录，不存在就创建

using System.Net;
using System.Net.Sockets;

        /// <summary>
        /// 检测目录是否存在
        /// </summary>
        /// <param name="ServerIP"></param>
        /// <param name="pFtpUserID"></param>
        /// <param name="pFtpPW"></param>
        /// <param name="FileSource"></param>
        /// <param name="FileCategory"></param>
        /// <returns></returns>
        public static bool checkDirectory(string ServerIP, string pFtpUserID, string pFtpPW, string FileSource, string FileCategory)
        {
            //检测目录是否存在
            Uri uri = new Uri("ftp://" + ServerIP + "/" + FileSource + "/");
            if (!DirectoryIsExist(uri, pFtpUserID, pFtpPW))
            {
                //创建目录
                uri = new Uri("ftp://" + ServerIP + "/" + FileSource);
                if (CreateDirectory(uri, pFtpUserID, pFtpPW))
                {
                    //检测下一级目录是否存在
                    uri = new Uri("ftp://" + ServerIP + "/" + FileSource + "/" + FileCategory + "/");
                    if (!DirectoryIsExist(uri, pFtpUserID, pFtpPW))
                    {
                        //创建目录
                        uri = new Uri("ftp://" + ServerIP + "/" + FileSource + "/" + FileCategory);
                        if (CreateDirectory(uri, pFtpUserID, pFtpPW))
                        {
                            return true;
                        }
                        else { XtraMessageBox.Show("创建目录：{0}失败", FileCategory); return false; }
                    }
                    else
                    {
                        return true;
                    }
                }
                else { XtraMessageBox.Show("创建目录：{0}失败", FileSource); return false; }
            }
            else
            {
                //检测下一级目录是否存在
                uri = new Uri("ftp://" + ServerIP + "/" + FileSource + "/" + FileCategory + "/");
                if (!DirectoryIsExist(uri, pFtpUserID, pFtpPW))
                {
                    //创建目录
                    uri = new Uri("ftp://" + ServerIP + "/" + FileSource + "/" + FileCategory);
                    if (CreateDirectory(uri, pFtpUserID, pFtpPW))
                    {
                        return true;
                    }
                    else { XtraMessageBox.Show("创建目录：{0}失败", FileCategory); return false; }
                }
                else
                {
                    return true;
                }
            }
        }
        /// <summary>
        /// ftp创建目录(创建文件夹)
        /// </summary>
        /// <param name="IP">IP服务地址</param>
        /// <param name="UserName">登陆账号</param>
        /// <param name="UserPass">密码</param>
        /// <param name="FileSource"></param>
        /// <param name="FileCategory"></param>
        /// <returns></returns>
        public static bool CreateDirectory(Uri IP, string UserName, string UserPass)
        {
            try
            {
                FtpWebRequest FTP = (FtpWebRequest)FtpWebRequest.Create(IP);
                FTP.Credentials = new NetworkCredential(UserName, UserPass);
                FTP.Proxy = null;
                FTP.KeepAlive = false;
                FTP.Method = WebRequestMethods.Ftp.MakeDirectory;
                FTP.UseBinary = true;
                FtpWebResponse response = FTP.GetResponse() as FtpWebResponse;
                response.Close();
                return true;
            }
            catch
            {
                return false;
            }
        }
        /// <summary>
        /// 检测目录是否存在
        /// </summary>
        /// <param name="pFtpServerIP"></param>
        /// <param name="pFtpUserID"></param>
        /// <param name="pFtpPW"></param>
        /// <returns>false不存在，true存在</returns>
        public static bool DirectoryIsExist(Uri pFtpServerIP, string pFtpUserID, string pFtpPW)
        {
            string[] value = GetFileList(pFtpServerIP, pFtpUserID, pFtpPW);
            if (value == null)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        public static string[] GetFileList(Uri pFtpServerIP, string pFtpUserID, string pFtpPW)
        {
            StringBuilder result = new StringBuilder();
            try
            {
                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(pFtpServerIP);
                reqFTP.UseBinary = true;
                reqFTP.Credentials = new NetworkCredential(pFtpUserID, pFtpPW);
                reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;

                WebResponse response = reqFTP.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream());
                string line = reader.ReadLine();
                while (line != null)
                {
                    result.Append(line);
                    result.Append(" ");
                    line = reader.ReadLine();
                }
                reader.Close();
                response.Close();
                return result.ToString().Split(' ');
            }
            catch
            {
                return null;
            }
        }

==========================================================

C#对FTP的操作（上传，下载，重命名文件，删除文件，文件存在检查）

http://blog.csdn.net/hejialin666/article/details/3522815

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Data;
using System.IO;
using System.ComponentModel;
namespace Common
{
public class FTPClient
{
private string ftpServerIP = String.Empty;
private string ftpUser = String.Empty;
private string ftpPassword = String.Empty;
private string ftpRootURL = String.Empty;
public FTPClient(string url, string userid,string password)
{
this.ftpServerIP = ftp的IP地址;
this.ftpUser = 用户名;
this.ftpPassword = 密码;
this.ftpRootURL = "ftp://" + url + "/";
}
/// <summary>
/// 上传
/// </summary>
/// <param name="localFile">本地文件绝对路径</param>
/// <param name="ftpPath">上传到ftp的路径</param>
/// <param name="ftpFileName">上传到ftp的文件名</param>
public bool fileUpload(FileInfo localFile, string ftpPath, string ftpFileName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
FileStream localFileStream = null;
Stream requestStream = null;
try
{
string uri = ftpRootURL + ftpPath + ftpFileName;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.UseBinary = true;
ftpWebRequest.KeepAlive = false;
ftpWebRequest.Method = WebRequestMethods.Ftp.UploadFile;
ftpWebRequest.ContentLength = localFile.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
localFileStream = localFile.OpenRead();
requestStream = ftpWebRequest.GetRequestStream();
contentLen = localFileStream.Read(buff, 0, buffLength);
while (contentLen != 0)
{
requestStream.Write(buff, 0, contentLen);
contentLen = localFileStream.Read(buff, 0, buffLength);
}
success = true;
}
catch (Exception)
{
success = false;
}
finally
{
if (requestStream != null)
{
requestStream.Close();
}
if (localFileStream != null)
{
localFileStream.Close();
}
}
return success;
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="localPath">本地文件地址(没有文件名)</param>
/// <param name="localFileName">本地文件名</param>
/// <param name="ftpPath">上传到ftp的路径</param>
/// <param name="ftpFileName">上传到ftp的文件名</param>
public bool fileUpload(string localPath, string localFileName, string ftpPath, string ftpFileName)
{
bool success = false;
try
{
FileInfo localFile = new FileInfo(localPath + localFileName);
if (localFile.Exists)
{
success = fileUpload(localFile, ftpPath, ftpFileName);
}
else
{
success = false;
}
}
catch (Exception)
{
success = false;
}
return success;
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="localPath">本地文件地址(没有文件名)</param>
/// <param name="localFileName">本地文件名</param>
/// <param name="ftpPath">下载的ftp的路径</param>
/// <param name="ftpFileName">下载的ftp的文件名</param>
public bool fileDownload(string localPath, string localFileName, string ftpPath, string ftpFileName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
FtpWebResponse ftpWebResponse = null;
Stream ftpResponseStream = null;
FileStream outputStream = null;
try
{
outputStream = new FileStream(localPath + localFileName, FileMode.Create);
string uri = ftpRootURL + ftpPath + ftpFileName;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.UseBinary = true;
ftpWebRequest.Method = WebRequestMethods.Ftp.DownloadFile;
ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
ftpResponseStream = ftpWebResponse.GetResponseStream();
long contentLength = ftpWebResponse.ContentLength;
int bufferSize = 2048;
byte[] buffer = new byte[bufferSize];
int readCount;
readCount = ftpResponseStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpResponseStream.Read(buffer, 0, bufferSize);
}
success = true;
}
catch (Exception)
{
success = false;
}
finally
{
if (outputStream != null)
{
outputStream.Close();
}
if (ftpResponseStream != null)
{
ftpResponseStream.Close();
}
if (ftpWebResponse != null)
{
ftpWebResponse.Close();
}
}
return success;
}
/// <summary>
/// 重命名
/// </summary>
/// <param name="ftpPath">ftp文件路径</param>
/// <param name="currentFilename"></param>
/// <param name="newFilename"></param>
public bool fileRename(string ftpPath, string currentFileName, string newFileName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
FtpWebResponse ftpWebResponse = null;
Stream ftpResponseStream = null;
try
{
string uri = ftpRootURL + ftpPath + currentFileName;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.UseBinary = true;
ftpWebRequest.Method = WebRequestMethods.Ftp.Rename;
ftpWebRequest.RenameTo = newFileName;
ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
ftpResponseStream = ftpWebResponse.GetResponseStream();
}
catch (Exception)
{
success = false;
}
finally
{
if (ftpResponseStream != null)
{
ftpResponseStream.Close();
}
if (ftpWebResponse != null)
{
ftpWebResponse.Close();
}
}
return success;
}
/// <summary>
/// 消除文件
/// </summary>
/// <param name="filePath"></param>
public bool fileDelete(string ftpPath, string ftpName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
FtpWebResponse ftpWebResponse = null;
Stream ftpResponseStream = null;
StreamReader streamReader = null;
try
{
string uri = ftpRootURL + ftpPath + ftpName;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.KeepAlive = false;
ftpWebRequest.Method = WebRequestMethods.Ftp.DeleteFile;
ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
long size = ftpWebResponse.ContentLength;
ftpResponseStream = ftpWebResponse.GetResponseStream();
streamReader = new StreamReader(ftpResponseStream);
string result = String.Empty;
result = streamReader.ReadToEnd();
success = true;
}
catch (Exception)
{
success = false;
}
finally
{
if (streamReader != null)
{
streamReader.Close();
}
if (ftpResponseStream != null)
{
ftpResponseStream.Close();
}
if (ftpWebResponse != null)
{
ftpWebResponse.Close();
}
}
return success;
}
/// <summary>
/// 文件存在检查
/// </summary>
/// <param name="ftpPath"></param>
/// <param name="ftpName"></param>
/// <returns></returns>
public bool fileCheckExist(string ftpPath, string ftpName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
WebResponse webResponse = null;
StreamReader reader = null;
try
{
string url = ftpRootURL + ftpPath;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.Method = WebRequestMethods.Ftp.ListDirectory;
ftpWebRequest.KeepAlive = false;
webResponse = ftpWebRequest.GetResponse();
reader = new StreamReader(webResponse.GetResponseStream());
string line = reader.ReadLine();
while (line != null)
{
if (line == ftpName)
{
success = true;
break;
}
line = reader.ReadLine();
}
}
catch (Exception)
{
success = false;
}
finally
{
if (reader != null)
{
reader.Close();
}
if (webResponse != null)
{
webResponse.Close();
}
}
return success;
}
}
}

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原文地址：https://www.cnblogs.com/qq260250932/p/4965999.html