asp.Net FTP上传类

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　　using System;using System.Collections.Generic;using System.Text;using System.Net;using System.IO;using System.Globalization;using System.Text.RegularExpressions;namespace WebBaseLib{/// <summary>/// FTP处理操作类/// 功能：/// 下载文件/// 上传文件/// 上传文件的进度信息/// 下载文件的进度信息/// 删除文件/// 列出文件/// 列出目录/// 进入子目录/// 退出当前目录返回上一层目录/// 判断远程文件是否存在/// 判断远程文件是否存在/// 删除远程文件   /// 建立目录/// 删除目录/// 文件（目录）改名/// </summary>/// <remarks>/// 创建人：南疯/// 创建时间：2007年4月28日/// </remarks>#region 文件信息结构public struct FileStruct{public string Flags;public string Owner;public string Group;public bool IsDirectory;public DateTime CreateTime;public string Name;}public enum FileListStyle{UnixStyle,WindowsStyle,Unknown}#endregionpublic class NewFtp{#region 属性信息/// <summary>/// FTP请求对象/// </summary>FtpWebRequest Request = null;/// <summary>/// FTP响应对象/// </summary>FtpWebResponse Response = null;/// <summary>/// FTP服务器地址/// </summary>private Uri _Uri;/// <summary>/// FTP服务器地址/// </summary>public Uri Uri{get{if( _DirectoryPath == "/" ){return _Uri;}else{string strUri = _Uri.ToString();if( strUri.EndsWith( "/" ) ){strUri = strUri.Substring( 0, strUri.Length - 1 );}return new Uri( strUri + this.DirectoryPath );}}set{if( value.Scheme != Uri.UriSchemeFtp ){throw new Exception( "Ftp 地址格式错误!" );}_Uri = new Uri( value.GetLeftPart( UriPartial.Authority ) );_DirectoryPath = value.AbsolutePath;if( !_DirectoryPath.EndsWith( "/" ) ){_DirectoryPath += "/";}}}/// <summary>/// 当前工作目录/// </summary>private string _DirectoryPath;/// <summary>/// 当前工作目录/// </summary>public string DirectoryPath{get{return _DirectoryPath;}set{_DirectoryPath = value;}}/// <summary>/// FTP登录用户/// </summary>private string _UserName;/// <summary>/// FTP登录用户/// </summary>public string UserName{get{return _UserName;}set{_UserName = value;}}/// <summary>/// 错误信息/// </summary>private string _ErrorMsg;/// <summary>/// 错误信息/// </summary>public string ErrorMsg{get{return _ErrorMsg;}set{_ErrorMsg = value;}}/// <summary>/// FTP登录密码/// </summary>private string _Password;/// <summary>/// FTP登录密码/// </summary>public string Password{get{return _Password;}set{_Password = value;}}/// <summary>/// 连接FTP服务器的代理服务/// </summary>private WebProxy _Proxy = null;/// <summary>/// 连接FTP服务器的代理服务/// </summary>public WebProxy Proxy{get{return _Proxy;}set{_Proxy = value;}}/// <summary>/// 是否需要删除临时文件/// </summary>private bool _isDeleteTempFile = false;/// <summary>/// 异步上传所临时生成的文件/// </summary>private string _UploadTempFile = "";#endregion#region 事件public delegate void De_DownloadProgressChanged( object sender, DownloadProgressChangedEventArgs e );public delegate void De_DownloadDataCompleted( object sender, System.ComponentModel.AsyncCompletedEventArgs e );public delegate void De_UploadProgressChanged( object sender, UploadProgressChangedEventArgs e );public delegate void De_UploadFileCompleted( object sender, UploadFileCompletedEventArgs e );/// <summary>/// 异步下载进度发生改变触发的事件/// </summary>public event De_DownloadProgressChanged DownloadProgressChanged;/// <summary>/// 异步下载文件完成之后触发的事件/// </summary>public event De_DownloadDataCompleted DownloadDataCompleted;/// <summary>/// 异步上传进度发生改变触发的事件/// </summary>public event De_UploadProgressChanged UploadProgressChanged;/// <summary>/// 异步上传文件完成之后触发的事件/// </summary>public event De_UploadFileCompleted UploadFileCompleted;#endregion#region 构造析构函数/// <summary>/// 构造函数/// </summary>/// <param name="FtpUri">FTP地址</param>/// <param name="strUserName">登录用户名</param>/// <param name="strPassword">登录密码</param>public NewFtp( Uri FtpUri, string strUserName, string strPassword ){this._Uri = new Uri( FtpUri.GetLeftPart( UriPartial.Authority ) );_DirectoryPath = FtpUri.AbsolutePath;if( !_DirectoryPath.EndsWith( "/" ) ){_DirectoryPath += "/";}this._UserName = strUserName;this._Password = strPassword;this._Proxy = null;}/// <summary>/// 构造函数/// </summary>/// <param name="FtpUri">FTP地址</param>/// <param name="strUserName">登录用户名</param>/// <param name="strPassword">登录密码</param>/// <param name="objProxy">连接代理</param>public NewFtp( Uri FtpUri, string strUserName, string strPassword, WebProxy objProxy ){this._Uri = new Uri( FtpUri.GetLeftPart( UriPartial.Authority ) );_DirectoryPath = FtpUri.AbsolutePath;if( !_DirectoryPath.EndsWith( "/" ) ){_DirectoryPath += "/";}this._UserName = strUserName;this._Password = strPassword;this._Proxy = objProxy;}/// <summary>/// 构造函数/// </summary>public NewFtp(){this._UserName = "anonymous";  //匿名用户this._Password = "@anonymous";this._Uri = null;this._Proxy = null;}/// <summary>/// 析构函数/// </summary>~NewFtp(){if( Response != null ){Response.Close();Response = null;}if( Request != null ){Request.Abort();Request = null;}}#endregion#region 建立连接/// <summary>/// 建立FTP链接,返回响应对象/// </summary>/// <param name="uri">FTP地址</param>/// <param name="FtpMathod">操作命令</param>private FtpWebResponse Open( Uri uri, string FtpMathod ){try{Request = ( FtpWebRequest ) WebRequest.Create( uri );Request.Method = FtpMathod;Request.UseBinary = true;Request.Credentials = new NetworkCredential( this.UserName, this.Password );if( this.Proxy != null ){Request.Proxy = this.Proxy;}return ( FtpWebResponse ) Request.GetResponse();}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 建立FTP链接,返回请求对象/// </summary>/// <param name="uri">FTP地址</param>/// <param name="FtpMathod">操作命令</param>private FtpWebRequest OpenRequest( Uri uri, string FtpMathod ){try{Request = ( FtpWebRequest ) WebRequest.Create( uri );Request.Method = FtpMathod;Request.UseBinary = true;Request.Credentials = new NetworkCredential( this.UserName, this.Password );if( this.Proxy != null ){Request.Proxy = this.Proxy;}return Request;}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}#endregion#region 下载文件/// <summary>/// 从FTP服务器下载文件，使用与远程文件同名的文件名来保存文件/// </summary>/// <param name="RemoteFileName">远程文件名</param>/// <param name="LocalPath">本地路径</param>public bool DownloadFile( string RemoteFileName, string LocalPath ){return DownloadFile( RemoteFileName, LocalPath, RemoteFileName );}/// <summary>/// 从FTP服务器下载文件，指定本地路径和本地文件名/// </summary>/// <param name="RemoteFileName">远程文件名</param>/// <param name="LocalPath">本地路径</param>/// <param name="LocalFilePath">保存文件的本地路径,后面带有""</param>/// <param name="LocalFileName">保存本地的文件名</param>public bool DownloadFile( string RemoteFileName, string LocalPath, string LocalFileName ){byte[] bt = null;try{if( !IsValidFileChars( RemoteFileName ) || !IsValidFileChars( LocalFileName ) || !IsValidPathChars( LocalPath ) ){throw new Exception( "非法文件名或目录名!" );}if( !Directory.Exists( LocalPath ) ){throw new Exception( "本地文件路径不存在!" );}string LocalFullPath = Path.Combine( LocalPath, LocalFileName );if( File.Exists( LocalFullPath ) ){throw new Exception( "当前路径下已经存在同名文件！" );}bt = DownloadFile( RemoteFileName );if( bt != null ){FileStream stream = new FileStream( LocalFullPath, FileMode.Create );stream.Write( bt, 0, bt.Length );stream.Flush();stream.Close();return true;}else{return false;}}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 从FTP服务器下载文件，返回文件二进制数据/// </summary>/// <param name="RemoteFileName">远程文件名</param>public byte[] DownloadFile( string RemoteFileName ){try{if( !IsValidFileChars( RemoteFileName ) ){throw new Exception( "非法文件名或目录名!" );}Response = Open( new Uri( this.Uri.ToString() + RemoteFileName ), WebRequestMethods.Ftp.DownloadFile );Stream Reader = Response.GetResponseStream();MemoryStream mem = new MemoryStream( 1024 * 500 );byte[] buffer = new byte[ 1024 ];int bytesRead = 0;int TotalByteRead = 0;while( true ){bytesRead = Reader.Read( buffer, 0, buffer.Length );TotalByteRead += bytesRead;if( bytesRead == 0 )break;mem.Write( buffer, 0, bytesRead );}if( mem.Length > 0 ){return mem.ToArray();}else{return null;}}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}#endregion#region 异步下载文件/// <summary>/// 从FTP服务器异步下载文件，指定本地路径和本地文件名/// </summary>/// <param name="RemoteFileName">远程文件名</param>       /// <param name="LocalPath">保存文件的本地路径,后面带有""</param>/// <param name="LocalFileName">保存本地的文件名</param>public void DownloadFileAsync( string RemoteFileName, string LocalPath, string LocalFileName ){byte[] bt = null;try{if( !IsValidFileChars( RemoteFileName ) || !IsValidFileChars( LocalFileName ) || !IsValidPathChars( LocalPath ) ){throw new Exception( "非法文件名或目录名!" );}if( !Directory.Exists( LocalPath ) ){throw new Exception( "本地文件路径不存在!" );}string LocalFullPath = Path.Combine( LocalPath, LocalFileName );if( File.Exists( LocalFullPath ) ){throw new Exception( "当前路径下已经存在同名文件！" );}DownloadFileAsync( RemoteFileName, LocalFullPath );}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 从FTP服务器异步下载文件，指定本地完整路径文件名/// </summary>/// <param name="RemoteFileName">远程文件名</param>/// <param name="LocalFullPath">本地完整路径文件名</param>public void DownloadFileAsync( string RemoteFileName, string LocalFullPath ){try{if( !IsValidFileChars( RemoteFileName ) ){throw new Exception( "非法文件名或目录名!" );}if( File.Exists( LocalFullPath ) ){throw new Exception( "当前路径下已经存在同名文件！" );}MyWebClient client = new MyWebClient();client.DownloadProgressChanged += new DownloadProgressChangedEventHandler( client_DownloadProgressChanged );client.DownloadFileCompleted += new System.ComponentModel.AsyncCompletedEventHandler( client_DownloadFileCompleted );client.Credentials = new NetworkCredential( this.UserName, this.Password );if( this.Proxy != null ){client.Proxy = this.Proxy;}client.DownloadFileAsync( new Uri( this.Uri.ToString() + RemoteFileName ), LocalFullPath );}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 异步下载文件完成之后触发的事件/// </summary>/// <param name="sender">下载对象</param>/// <param name="e">数据信息对象</param>void client_DownloadFileCompleted( object sender, System.ComponentModel.AsyncCompletedEventArgs e ){if( DownloadDataCompleted != null ){DownloadDataCompleted( sender, e );}}/// <summary>/// 异步下载进度发生改变触发的事件/// </summary>/// <param name="sender">下载对象</param>/// <param name="e">进度信息对象</param>void client_DownloadProgressChanged( object sender, DownloadProgressChangedEventArgs e ){if( DownloadProgressChanged != null ){DownloadProgressChanged( sender, e );}}#endregion#region 上传文件/// <summary>/// 上传文件到FTP服务器/// </summary>/// <param name="LocalFullPath">本地带有完整路径的文件名</param>public bool UploadFile( string LocalFullPath ){return UploadFile( LocalFullPath, Path.GetFileName( LocalFullPath ), false );}/// <summary>/// 上传文件到FTP服务器/// </summary>/// <param name="LocalFullPath">本地带有完整路径的文件</param>/// <param name="OverWriteRemoteFile">是否覆盖远程服务器上面同名的文件</param>public bool UploadFile( string LocalFullPath, bool OverWriteRemoteFile ){return UploadFile( LocalFullPath, Path.GetFileName( LocalFullPath ), OverWriteRemoteFile );}/// <summary>/// 上传文件到FTP服务器/// </summary>/// <param name="LocalFullPath">本地带有完整路径的文件</param>/// <param name="RemoteFileName">要在FTP服务器上面保存文件名</param>public bool UploadFile( string LocalFullPath, string RemoteFileName ){return UploadFile( LocalFullPath, RemoteFileName, false );}/// <summary>/// 上传文件到FTP服务器/// </summary>/// <param name="LocalFullPath">本地带有完整路径的文件名</param>/// <param name="RemoteFileName">要在FTP服务器上面保存文件名</param>/// <param name="OverWriteRemoteFile">是否覆盖远程服务器上面同名的文件</param>public bool UploadFile( string LocalFullPath, string RemoteFileName, bool OverWriteRemoteFile ){try{if( !IsValidFileChars( RemoteFileName ) || !IsValidFileChars( Path.GetFileName( LocalFullPath ) ) || !IsValidPathChars( Path.GetDirectoryName( LocalFullPath ) ) ){throw new Exception( "非法文件名或目录名!" );}if( File.Exists( LocalFullPath ) ){FileStream Stream = new FileStream( LocalFullPath, FileMode.Open, FileAccess.Read );byte[] bt = new byte[ Stream.Length ];Stream.Read( bt, 0, ( Int32 ) Stream.Length );   //注意，因为Int32的最大限制，最大上传文件只能是大约2G多一点Stream.Close();return UploadFile( bt, RemoteFileName, OverWriteRemoteFile );}else{throw new Exception( "本地文件不存在!" );}}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 上传文件到FTP服务器/// </summary>/// <param name="FileBytes">上传的二进制数据</param>/// <param name="RemoteFileName">要在FTP服务器上面保存文件名</param>public bool UploadFile( byte[] FileBytes, string RemoteFileName ){if( !IsValidFileChars( RemoteFileName ) ){throw new Exception( "非法文件名或目录名!" );}return UploadFile( FileBytes, RemoteFileName, false );}/// <summary>/// 上传文件到FTP服务器/// </summary>/// <param name="FileBytes">文件二进制内容</param>/// <param name="RemoteFileName">要在FTP服务器上面保存文件名</param>/// <param name="OverWriteRemoteFile">是否覆盖远程服务器上面同名的文件</param>public bool UploadFile( byte[] FileBytes, string RemoteFileName, bool OverWriteRemoteFile ){try{if( !IsValidFileChars( RemoteFileName ) ){throw new Exception( "非法文件名！" );}if( !OverWriteRemoteFile && FileExist( RemoteFileName ) ){throw new Exception( "FTP服务上面已经存在同名文件！" );}Response = Open( new Uri( this.Uri.ToString() + RemoteFileName ), WebRequestMethods.Ftp.UploadFile );Stream requestStream = Request.GetRequestStream();MemoryStream mem = new MemoryStream( FileBytes );byte[] buffer = new byte[ 1024 ];int bytesRead = 0;int TotalRead = 0;while( true ){bytesRead = mem.Read( buffer, 0, buffer.Length );if( bytesRead == 0 )break;TotalRead += bytesRead;requestStream.Write( buffer, 0, bytesRead );}requestStream.Close();Response = ( FtpWebResponse ) Request.GetResponse();mem.Close();mem.Dispose();FileBytes = null;return true;}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}#endregion#region 异步上传文件/// <summary>/// 异步上传文件到FTP服务器/// </summary>/// <param name="LocalFullPath">本地带有完整路径的文件名</param>public void UploadFileAsync( string LocalFullPath ){UploadFileAsync( LocalFullPath, Path.GetFileName( LocalFullPath ), false );}/// <summary>/// 异步上传文件到FTP服务器/// </summary>/// <param name="LocalFullPath">本地带有完整路径的文件</param>/// <param name="OverWriteRemoteFile">是否覆盖远程服务器上面同名的文件</param>public void UploadFileAsync( string LocalFullPath, bool OverWriteRemoteFile ){UploadFileAsync( LocalFullPath, Path.GetFileName( LocalFullPath ), OverWriteRemoteFile );}/// <summary>/// 异步上传文件到FTP服务器/// </summary>/// <param name="LocalFullPath">本地带有完整路径的文件</param>/// <param name="RemoteFileName">要在FTP服务器上面保存文件名</param>public void UploadFileAsync( string LocalFullPath, string RemoteFileName ){UploadFileAsync( LocalFullPath, RemoteFileName, false );}/// <summary>/// 异步上传文件到FTP服务器/// </summary>/// <param name="LocalFullPath">本地带有完整路径的文件名</param>/// <param name="RemoteFileName">要在FTP服务器上面保存文件名</param>/// <param name="OverWriteRemoteFile">是否覆盖远程服务器上面同名的文件</param>public void UploadFileAsync( string LocalFullPath, string RemoteFileName, bool OverWriteRemoteFile ){try{if( !IsValidFileChars( RemoteFileName ) || !IsValidFileChars( Path.GetFileName( LocalFullPath ) ) || !IsValidPathChars( Path.GetDirectoryName( LocalFullPath ) ) ){throw new Exception( "非法文件名或目录名!" );}if( !OverWriteRemoteFile && FileExist( RemoteFileName ) ){throw new Exception( "FTP服务上面已经存在同名文件！" );}if( File.Exists( LocalFullPath ) ){MyWebClient client = new MyWebClient();client.UploadProgressChanged += new UploadProgressChangedEventHandler( client_UploadProgressChanged );client.UploadFileCompleted += new UploadFileCompletedEventHandler( client_UploadFileCompleted );client.Credentials = new NetworkCredential( this.UserName, this.Password );if( this.Proxy != null ){client.Proxy = this.Proxy;}client.UploadFileAsync( new Uri( this.Uri.ToString() + RemoteFileName ), LocalFullPath );}else{throw new Exception( "本地文件不存在!" );}}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 异步上传文件到FTP服务器/// </summary>/// <param name="FileBytes">上传的二进制数据</param>/// <param name="RemoteFileName">要在FTP服务器上面保存文件名</param>public void UploadFileAsync( byte[] FileBytes, string RemoteFileName ){if( !IsValidFileChars( RemoteFileName ) ){throw new Exception( "非法文件名或目录名!" );}UploadFileAsync( FileBytes, RemoteFileName, false );}/// <summary>/// 异步上传文件到FTP服务器/// </summary>/// <param name="FileBytes">文件二进制内容</param>/// <param name="RemoteFileName">要在FTP服务器上面保存文件名</param>/// <param name="OverWriteRemoteFile">是否覆盖远程服务器上面同名的文件</param>public void UploadFileAsync( byte[] FileBytes, string RemoteFileName, bool OverWriteRemoteFile ){try{if( !IsValidFileChars( RemoteFileName ) ){throw new Exception( "非法文件名！" );}if( !OverWriteRemoteFile && FileExist( RemoteFileName ) ){throw new Exception( "FTP服务上面已经存在同名文件！" );}string TempPath = System.Environment.GetFolderPath( Environment.SpecialFolder.Templates );if( !TempPath.EndsWith( "/" ) ){TempPath += "/";}string TempFile = TempPath + Path.GetRandomFileName();TempFile = Path.ChangeExtension( TempFile, Path.GetExtension( RemoteFileName ) );FileStream Stream = new FileStream( TempFile, FileMode.CreateNew, FileAccess.Write );Stream.Write( FileBytes, 0, FileBytes.Length );   //注意，因为Int32的最大限制，最大上传文件只能是大约2G多一点Stream.Flush();Stream.Close();Stream.Dispose();_isDeleteTempFile = true;_UploadTempFile = TempFile;FileBytes = null;UploadFileAsync( TempFile, RemoteFileName, OverWriteRemoteFile );}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 异步上传文件完成之后触发的事件/// </summary>/// <param name="sender">下载对象</param>/// <param name="e">数据信息对象</param>void client_UploadFileCompleted( object sender, UploadFileCompletedEventArgs e ){if( _isDeleteTempFile ){if( File.Exists( _UploadTempFile ) ){File.SetAttributes( _UploadTempFile, FileAttributes.Normal );File.Delete( _UploadTempFile );}_isDeleteTempFile = false;}if( UploadFileCompleted != null ){UploadFileCompleted( sender, e );}}/// <summary>/// 异步上传进度发生改变触发的事件/// </summary>/// <param name="sender">下载对象</param>/// <param name="e">进度信息对象</param>void client_UploadProgressChanged( object sender, UploadProgressChangedEventArgs e ){if( UploadProgressChanged != null ){UploadProgressChanged( sender, e );}}#endregion#region 列出目录文件信息/// <summary>/// 列出FTP服务器上面当前目录的所有文件和目录/// </summary>public FileStruct[] ListFilesAndDirectories(){Response = Open( this.Uri, WebRequestMethods.Ftp.ListDirectoryDetails );StreamReader stream = new StreamReader( Response.GetResponseStream(), Encoding.Default );string Datastring = stream.ReadToEnd();FileStruct[] list = GetList( Datastring );return list;}/// <summary>/// 列出FTP服务器上面当前目录的所有文件/// </summary>public FileStruct[] ListFiles(){FileStruct[] listAll = ListFilesAndDirectories();List<FileStruct> listFile = new List<FileStruct>();foreach( FileStruct file in listAll ){if( !file.IsDirectory ){listFile.Add( file );}}return listFile.ToArray();}/// <summary>/// 列出FTP服务器上面当前目录的所有的目录/// </summary>public FileStruct[] ListDirectories(){FileStruct[] listAll = ListFilesAndDirectories();List<FileStruct> listDirectory = new List<FileStruct>();foreach( FileStruct file in listAll ){if( file.IsDirectory ){listDirectory.Add( file );}}return listDirectory.ToArray();}/// <summary>/// 获得文件和目录列表/// </summary>/// <param name="datastring">FTP返回的列表字符信息</param>private FileStruct[] GetList( string datastring ){List<FileStruct> myListArray = new List<FileStruct>();string[] dataRecords = datastring.Split( '' );FileListStyle _directoryListStyle = GuessFileListStyle( dataRecords );foreach( string s in dataRecords ){if( _directoryListStyle != FileListStyle.Unknown && s != "" ){FileStruct f = new FileStruct();f.Name = "..";switch( _directoryListStyle ){case FileListStyle.UnixStyle:f = ParseFileStructFromUnixStyleRecord( s );break;case FileListStyle.WindowsStyle:f = ParseFileStructFromWindowsStyleRecord( s );break;}if( !( f.Name == "." || f.Name == ".." ) ){myListArray.Add( f );}}}return myListArray.ToArray();}/// <summary>/// 从Windows格式中返回文件信息/// </summary>/// <param name="Record">文件信息</param>private FileStruct ParseFileStructFromWindowsStyleRecord( string Record ){FileStruct f = new FileStruct();string processstr = Record.Trim();string dateStr = processstr.Substring( 0, 8 );processstr = ( processstr.Substring( 8, processstr.Length - 8 ) ).Trim();string timeStr = processstr.Substring( 0, 7 );processstr = ( processstr.Substring( 7, processstr.Length - 7 ) ).Trim();DateTimeFormatInfo myDTFI = new CultureInfo( "en-US", false ).DateTimeFormat;myDTFI.ShortTimePattern = "t";f.CreateTime = DateTime.Parse( dateStr + " " + timeStr, myDTFI );if( processstr.Substring( 0, 5 ) == "<DIR>" ){f.IsDirectory = true;processstr = ( processstr.Substring( 5, processstr.Length - 5 ) ).Trim();}else{string[] strs = processstr.Split( new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries );   // true);processstr = strs[ 1 ];f.IsDirectory = false;}f.Name = processstr;return f;}/// <summary>/// 判断文件列表的方式Window方式还是Unix方式/// </summary>/// <param name="recordList">文件信息列表</param>private FileListStyle GuessFileListStyle( string[] recordList ){foreach( string s in recordList ){if( s.Length > 10&& Regex.IsMatch( s.Substring( 0, 10 ), "(-|d)(-|r)(-|w)(-|x)(-|r)(-|w)(-|x)(-|r)(-|w)(-|x)" ) ){return FileListStyle.UnixStyle;}else if( s.Length > 8&& Regex.IsMatch( s.Substring( 0, 8 ), "[0-9][0-9]-[0-9][0-9]-[0-9][0-9]" ) ){return FileListStyle.WindowsStyle;}}return FileListStyle.Unknown;}/// <summary>/// 从Unix格式中返回文件信息/// </summary>/// <param name="Record">文件信息</param>private FileStruct ParseFileStructFromUnixStyleRecord( string Record ){FileStruct f = new FileStruct();string processstr = Record.Trim();f.Flags = processstr.Substring( 0, 10 );f.IsDirectory = ( f.Flags[ 0 ] == 'd' );processstr = ( processstr.Substring( 11 ) ).Trim();_cutSubstringFromStringWithTrim( ref processstr, ' ', 0 );   //跳过一部分f.Owner = _cutSubstringFromStringWithTrim( ref processstr, ' ', 0 );f.Group = _cutSubstringFromStringWithTrim( ref processstr, ' ', 0 );_cutSubstringFromStringWithTrim( ref processstr, ' ', 0 );   //跳过一部分string yearOrTime = processstr.Split( new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries )[ 2 ];if( yearOrTime.IndexOf( ":" ) >= 0 )  //time{processstr = processstr.Replace( yearOrTime, DateTime.Now.Year.ToString() );}f.CreateTime = DateTime.Parse( _cutSubstringFromStringWithTrim( ref processstr, ' ', 8 ) );f.Name = processstr;   //最后就是名称return f;}/// <summary>/// 按照一定的规则进行字符串截取/// </summary>/// <param name="s">截取的字符串</param>/// <param name="c">查找的字符</param>/// <param name="startIndex">查找的位置</param>private string _cutSubstringFromStringWithTrim( ref string s, char c, int startIndex ){int pos1 = s.IndexOf( c, startIndex );string retString = s.Substring( 0, pos1 );s = ( s.Substring( pos1 ) ).Trim();return retString;}#endregion#region 目录或文件存在的判断/// <summary>/// 判断当前目录下指定的子目录是否存在/// </summary>/// <param name="RemoteDirectoryName">指定的目录名</param>public bool DirectoryExist( string RemoteDirectoryName ){try{if( !IsValidPathChars( RemoteDirectoryName ) ){throw new Exception( "目录名非法！" );}FileStruct[] listDir = ListDirectories();foreach( FileStruct dir in listDir ){if( dir.Name == RemoteDirectoryName ){return true;}}return false;}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 判断一个远程文件是否存在服务器当前目录下面/// </summary>/// <param name="RemoteFileName">远程文件名</param>public bool FileExist( string RemoteFileName ){try{if( !IsValidFileChars( RemoteFileName ) ){throw new Exception( "文件名非法！" );}FileStruct[] listFile = ListFiles();foreach( FileStruct file in listFile ){if( file.Name == RemoteFileName ){return true;}}return false;}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}#endregion#region 删除文件/// <summary>/// 从FTP服务器上面删除一个文件/// </summary>/// <param name="RemoteFileName">远程文件名</param>public void DeleteFile( string RemoteFileName ){try{if( !IsValidFileChars( RemoteFileName ) ){throw new Exception( "文件名非法！" );}Response = Open( new Uri( this.Uri.ToString() + RemoteFileName ), WebRequestMethods.Ftp.DeleteFile );}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}#endregion#region 重命名文件/// <summary>/// 更改一个文件的名称或一个目录的名称/// </summary>/// <param name="RemoteFileName">原始文件或目录名称</param>/// <param name="NewFileName">新的文件或目录的名称</param>public bool ReName( string RemoteFileName, string NewFileName ){try{if( !IsValidFileChars( RemoteFileName ) || !IsValidFileChars( NewFileName ) ){throw new Exception( "文件名非法！" );}if( RemoteFileName == NewFileName ){return true;}if( FileExist( RemoteFileName ) ){Request = OpenRequest( new Uri( this.Uri.ToString() + RemoteFileName ), WebRequestMethods.Ftp.Rename );Request.RenameTo = NewFileName;Response = ( FtpWebResponse ) Request.GetResponse();}else{throw new Exception( "文件在服务器上不存在！" );}return true;}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}#endregion#region 拷贝、移动文件/// <summary>/// 把当前目录下面的一个文件拷贝到服务器上面另外的目录中，注意，拷贝文件之后，当前工作目录还是文件原来所在的目录/// </summary>/// <param name="RemoteFile">当前目录下的文件名</param>/// <param name="DirectoryName">新目录名称。/// 说明：如果新目录是当前目录的子目录，则直接指定子目录。如: SubDirectory1/SubDirectory2 ；/// 如果新目录不是当前目录的子目录，则必须从根目录一级一级的指定。如： ./NewDirectory/SubDirectory1/SubDirectory2/// </param>/// <returns></returns>public bool CopyFileToAnotherDirectory( string RemoteFile, string DirectoryName ){string CurrentWorkDir = this.DirectoryPath;try{byte[] bt = DownloadFile( RemoteFile );GotoDirectory( DirectoryName );bool Success = UploadFile( bt, RemoteFile, false );this.DirectoryPath = CurrentWorkDir;return Success;}catch( Exception ep ){this.DirectoryPath = CurrentWorkDir;ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 把当前目录下面的一个文件移动到服务器上面另外的目录中，注意，移动文件之后，当前工作目录还是文件原来所在的目录/// </summary>/// <param name="RemoteFile">当前目录下的文件名</param>/// <param name="DirectoryName">新目录名称。/// 说明：如果新目录是当前目录的子目录，则直接指定子目录。如: SubDirectory1/SubDirectory2 ；/// 如果新目录不是当前目录的子目录，则必须从根目录一级一级的指定。如： ./NewDirectory/SubDirectory1/SubDirectory2/// </param>/// <returns></returns>public bool MoveFileToAnotherDirectory( string RemoteFile, string DirectoryName ){string CurrentWorkDir = this.DirectoryPath;try{if( DirectoryName == "" )return false;if( !DirectoryName.StartsWith( "/" ) )DirectoryName = "/" + DirectoryName;if( !DirectoryName.EndsWith( "/" ) )DirectoryName += "/";bool Success = ReName( RemoteFile, DirectoryName + RemoteFile );this.DirectoryPath = CurrentWorkDir;return Success;}catch( Exception ep ){this.DirectoryPath = CurrentWorkDir;ErrorMsg = ep.ToString();throw ep;}}#endregion#region 建立、删除子目录/// <summary>/// 在FTP服务器上当前工作目录建立一个子目录/// </summary>/// <param name="DirectoryName">子目录名称</param>public bool MakeDirectory( string DirectoryName ){try{if( !IsValidPathChars( DirectoryName ) ){throw new Exception( "目录名非法！" );}if( DirectoryExist( DirectoryName ) ){throw new Exception( "服务器上面已经存在同名的文件名或目录名！" );}string a = this.Uri.ToString();string b = DirectoryName;Response = Open( new Uri( this.Uri.ToString() + DirectoryName ), WebRequestMethods.Ftp.MakeDirectory );return true;}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 从当前工作目录中删除一个子目录/// </summary>/// <param name="DirectoryName">子目录名称</param>public bool RemoveDirectory( string DirectoryName ){try{if( !IsValidPathChars( DirectoryName ) ){throw new Exception( "目录名非法！" );}if( !DirectoryExist( DirectoryName ) ){throw new Exception( "服务器上面不存在指定的文件名或目录名！" );}Response = Open( new Uri( this.Uri.ToString() + DirectoryName ), WebRequestMethods.Ftp.RemoveDirectory );return true;}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}#endregion#region 文件、目录名称有效性判断/// <summary>/// 判断目录名中字符是否合法/// </summary>/// <param name="DirectoryName">目录名称</param>public bool IsValidPathChars( string DirectoryName ){char[] invalidPathChars = Path.GetInvalidPathChars();char[] DirChar = DirectoryName.ToCharArray();foreach( char C in DirChar ){if( Array.BinarySearch( invalidPathChars, C ) >= 0 ){return false;}}return true;}/// <summary>/// 判断文件名中字符是否合法/// </summary>/// <param name="FileName">文件名称</param>public bool IsValidFileChars( string FileName ){char[] invalidFileChars = Path.GetInvalidFileNameChars();char[] NameChar = FileName.ToCharArray();foreach( char C in NameChar ){if( Array.BinarySearch( invalidFileChars, C ) >= 0 ){return false;}}return true;}#endregion#region 目录切换操作/// <summary>/// 进入一个目录/// </summary>/// <param name="DirectoryName">/// 新目录的名字。/// 说明：如果新目录是当前目录的子目录，则直接指定子目录。如: SubDirectory1/SubDirectory2 ；/// 如果新目录不是当前目录的子目录，则必须从根目录一级一级的指定。如： ./NewDirectory/SubDirectory1/SubDirectory2/// </param>public bool GotoDirectory( string DirectoryName ){string CurrentWorkPath = this.DirectoryPath;try{DirectoryName = DirectoryName.Replace( "/", "/" );string[] DirectoryNames = DirectoryName.Split( new char[] { '/' } );if( DirectoryNames[ 0 ] == "." ){this.DirectoryPath = "/";if( DirectoryNames.Length == 1 ){return true;}Array.Clear( DirectoryNames, 0, 1 );}bool Success = false;foreach( string dir in DirectoryNames ){if( dir != null ){Success = EnterOneSubDirectory( dir );if( !Success ){this.DirectoryPath = CurrentWorkPath;return false;}}}return Success;}catch( Exception ep ){this.DirectoryPath = CurrentWorkPath;ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 从当前工作目录进入一个子目录/// </summary>/// <param name="DirectoryName">子目录名称</param>private bool EnterOneSubDirectory( string DirectoryName ){try{if( DirectoryName.IndexOf( "/" ) >= 0 || !IsValidPathChars( DirectoryName ) ){throw new Exception( "目录名非法!" );}if( DirectoryName.Length > 0 && DirectoryExist( DirectoryName ) ){if( !DirectoryName.EndsWith( "/" ) ){DirectoryName += "/";}_DirectoryPath += DirectoryName;return true;}else{return false;}}catch( Exception ep ){ErrorMsg = ep.ToString();throw ep;}}/// <summary>/// 从当前工作目录往上一级目录/// </summary>public bool ComeoutDirectory(){if( _DirectoryPath == "/" ){ErrorMsg = "当前目录已经是根目录！";throw new Exception( "当前目录已经是根目录！" );}char[] sp = new char[ 1 ] { '/' };string[] strDir = _DirectoryPath.Split( sp, StringSplitOptions.RemoveEmptyEntries );if( strDir.Length == 1 ){_DirectoryPath = "/";}else{_DirectoryPath = String.Join( "/", strDir, 0, strDir.Length - 1 );}return true;}#endregion#region 重载WebClient，支持FTP进度internal class MyWebClient : WebClient{protected override WebRequest GetWebRequest( Uri address ){FtpWebRequest req = ( FtpWebRequest ) base.GetWebRequest( address );req.UsePassive = false;return req;}}#endregion}}