.net 开源 FTP 组件 edtFTPnet

edtFTPnet官方网站：
http://www.enterprisedt.com/products/edtftpnet/

目前最新版本为2.2.3，下载后在bin目录中找到edtFTPnet.dll，在项目中添加引用。
下面为一些用法：

一、FTP服务器根目录为web，在它下面建立以下图示的目录和上传文件
FTPConnection.CommandEncoding = Encoding.GetEncoding("GBK") 指定GBK编码以支持中文文件名
FTPConnection.CreateDirectory() 建立指定目录
FTPConnection.ChangeWorkingDirectory() 切换到指定目录
FTPConnection.UploadFile() 上传文件

web
|-----L11
      |-----L21            
            |-----L31
                  |-----31.htm
            |-----21.htm
      |-----L22
      |-----11.htm
      |-----目录.txt

+ View Code ?

private const string ftpServerIP = "xx.xx.xx.xx" ; private const string ftpRemotePath = "web" ; private const string ftpUserID = "user" ; private const string ftpPassword = "123" ;   private void btnCreateAndUpload_Click( object sender, EventArgs e) {               using ( var conn = new FTPConnection      {          ServerAddress = ftpServerIP,          ServerDirectory = ftpRemotePath,          UserName = ftpUserID,          Password = ftpPassword,          CommandEncoding = Encoding.GetEncoding( "GBK" )      })      {          conn.Connect();                           //建立目录L11          conn.CreateDirectory( "L11" );            //============切换当前工做目录到L11============          conn.ChangeWorkingDirectory( "L11" );          //上行代码也能够用conn.ServerDirectory = "L11";            //上传"文档.txt"          conn.UploadFile( "文档.txt" , "文档.txt" );            //建立子目录L21,L22          conn.CreateDirectory( "L21" );          conn.CreateDirectory( "L22" );            //在当前工做目录L11上传文件"L11.htm"          conn.UploadFile( "11.htm" , "11.htm" );            //============切换当前工做目录到L21============          conn.ChangeWorkingDirectory( "L21" );            //上传文件21.htm          conn.UploadFile( "21.htm" , "21.htm" );          //建立目录L31          conn.CreateDirectory( "L31" );            //============切换当前工做目录到L31============          conn.ChangeWorkingDirectory( "L31" );            //上传文件31.htm          conn.UploadFile( "31.htm" , "31.htm" );      } }

二、获取文件信息
FTPConnection.GetFileInfos() 获取文件和目录详细信息，结果的一个属性Dir为true表示为目录，不然为文件

+ View Code ?

private void btnList_Click( object sender, EventArgs e) {      using ( var conn = new FTPConnection      {          ServerAddress = ftpServerIP,          ServerDirectory = ftpRemotePath,          UserName = ftpUserID,          Password = ftpPassword,          CommandEncoding = Encoding.GetEncoding( "GBK" )      })      {          conn.Connect();          //获取指定目录的全部子目录和文件信息          conn.ChangeWorkingDirectory( "L11/L21" );                        var files1 = conn.GetFileInfos();          ShowFileInfos(files1);          /*结果以下：           File, /web/L11/L21/21.htm, 21.htm, 11.2KB, 2013-9-26 14:51:00           Dir, /web/L11/L21/L31, L31, 0KB, 2013-9-26 14:51:00           */            ////返回上级目录，例子中为web/L11          conn.ChangeWorkingDirectoryUp();          var files2 = conn.GetFileInfosRecursive();          ShowFileInfos(files2);          /*结果以下：          File, /web/L11/11.htm, 11.htm, 59.4KB, 2013-9-26 14:51:00          Dir, /web/L11/L21, L21, 0KB, 2013-9-26 14:51:00          Dir, /web/L11/L22, L22, 0KB, 2013-9-26 14:51:00          File, /web/L11/文档.txt, 文档.txt, 40.8KB, 2013-9-26 14:51:00          File, /web/L11/L21/21.htm, 21.htm, 11.2KB, 2013-9-26 14:51:00          Dir, /web/L11/L21/L31, L31, 0KB, 2013-9-26 14:51:00          File, /web/L11/L21/L31/31.htm, 31.htm, 5.6KB, 2013-9-26 14:51:00           */      } }      void ShowFileInfos(FTPFile[] files) {      foreach ( var file in files)      {          string info = string .Format( "{0}, {1}, {2}, {3}KB, {4}" ,              file.Dir ? "Dir" : "File" , file.Path, file.Name, Math.Round(file.Size / 1024.0, 1), file.LastModified);          richTextBox1.AppendText(info + "\r\n" );      }      richTextBox1.AppendText( "\r\n" ); }

其中递归获取指定目录的全部子目录和文件信息的扩展方法GetFileInfosRecursive以下：

+ View Code ?

public static class FtpClientExtensions {      /// <summary>      /// 递归获取目录的全部子目录和文件信息      /// </summary>      public static FTPFile[] GetFileInfosRecursive( this FTPConnection conn)      {          var resultList = new List<FTPFile>();          var fileInfos = conn.GetFileInfos();          resultList.AddRange(fileInfos);          foreach ( var fileInfo in fileInfos)          {              if (fileInfo.Dir)              {                  conn.ServerDirectory = fileInfo.Path;                  resultList.AddRange(conn.GetFileInfosRecursive());              }          }          return resultList.ToArray();      }      /// <summary>      /// 递归删除目录(包括全部子目录和文件信息)      /// </summary>      public static void DeleteDirectoryRecursive( this FTPConnection conn, string directoryName)      {          conn.ChangeWorkingDirectory(directoryName);          var fileInfos = conn.GetFileInfos();          foreach ( var fileInfo in fileInfos)          {              if (fileInfo.Dir)                  conn.DeleteDirectoryRecursive(fileInfo.Name);              else                  conn.DeleteFile(fileInfo.Name);          }          conn.ChangeWorkingDirectoryUp();          conn.DeleteDirectory(directoryName);      } }

三、删除目录及全部子目录和文件
FTPConnection.DeleteDirectory()当删除的目录不为空时，会出错，需递归删除，
递归删除目录扩展方法DeleteDirectoryRecursive见上面类FtpClientExtensions

+ View Code ?

private void btnDelete_Click( object sender, EventArgs e) {      using ( var conn = new FTPConnection      {          ServerAddress = ftpServerIP,          ServerDirectory = ftpRemotePath,          UserName = ftpUserID,          Password = ftpPassword,          CommandEncoding = Encoding.GetEncoding( "GBK" )      })      {          conn.Connect();                       //递归删除目录及全部子目录和文件          conn.DeleteDirectoryRecursive( "L11" );          //若是删除单个文件，路径为当前目录的相对路径          //conn.DeleteFile("L11/11.htm");      } }