本文实例讲述了C#实现自定义FTP操作封装类。分享给大家供大家参考。具体如下：

这个C#类封装了FTP的常用操作，包括连接ftp服务器、列表服务器上的目录和文件，从ftp下载文件，上传文件到ftp服务器等等

using System; using System.Text; using System.IO; namespace DotNet.Utilities { public class FTPOperater { #region 属性 private FTPClient ftp; /// <summary> /// 全局FTP访问变量 /// </summary> public FTPClient Ftp { get { return ftp; } set { ftp = value; } } private string _server; /// <summary> /// Ftp服务器 /// </summary> public string Server { get { return _server; } set { _server = value; } } private string _User; /// <summary> /// Ftp用户 /// </summary> public string User { get { return _User; } set { _User = value; } } private string _Pass; /// <summary> /// Ftp密码 /// </summary> public string Pass { get { return _Pass; } set { _Pass = value; } } private string _FolderZJ; /// <summary> /// Ftp密码 /// </summary> public string FolderZJ { get { return _FolderZJ; } set { _FolderZJ = value; } } private string _FolderWX; /// <summary> /// Ftp密码 /// </summary> public string FolderWX { get { return _FolderWX; } set { _FolderWX = value; } } #endregion /// <summary> /// 得到文件列表 /// </summary> /// <returns></returns> public string[] GetList(string strPath) { if (ftp == null) ftp = this.getFtpClient(); ftp.Connect(); ftp.ChDir(strPath); return ftp.Dir("*"); } /// <summary> /// 下载文件 /// </summary> /// <param name="ftpFolder">ftp目录</param> /// <param name="ftpFileName">ftp文件名</param> /// <param name="localFolder">本地目录</param> /// <param name="localFileName">本地文件名</param> public bool GetFile(string ftpFolder, string ftpFileName, string localFolder, string localFileName) { try { if (ftp == null) ftp = this.getFtpClient(); if (!ftp.Connected) { ftp.Connect(); ftp.ChDir(ftpFolder); } ftp.Get(ftpFileName, localFolder, localFileName); return true; } catch { try { ftp.DisConnect(); ftp = null; } catch { ftp = null; } return false; } } /// <summary> /// 修改文件 /// </summary> /// <param name="ftpFolder">本地目录</param> /// <param name="ftpFileName">本地文件名temp</param> /// <param name="localFolder">本地目录</param> /// <param name="localFileName">本地文件名</param> public bool AddMSCFile(string ftpFolder, string ftpFileName, string localFolder, string localFileName, string BscInfo) { string sLine = ""; string sResult = ""; string path = "获得应用程序所在的完整的路径"; path = path.Substring(0, path.LastIndexOf("")); try { FileStream fsFile = new FileStream(ftpFolder + "" + ftpFileName, FileMode.Open); FileStream fsFileWrite = new FileStream(localFolder + "" + localFileName, FileMode.Create); StreamReader sr = new StreamReader(fsFile); StreamWriter sw = new StreamWriter(fsFileWrite); sr.BaseStream.Seek(0, SeekOrigin.Begin); while (sr.Peek() > -1) { sLine = sr.ReadToEnd(); } string[] arStr = sLine.Split(new string[] { "n" }, StringSplitOptions.RemoveEmptyEntries); for (int i = 0; i < arStr.Length - 1; i++) { sResult += BscInfo + "," + arStr[i].Trim() + "n"; } sr.Close(); byte[] connect = new UTF8Encoding(true).GetBytes(sResult); fsFileWrite.Write(connect, 0, connect.Length); fsFileWrite.Flush(); sw.Close(); fsFile.Close(); fsFileWrite.Close(); return true; } catch (Exception e) { return false; } } /// <summary> /// 删除文件 /// </summary> /// <param name="ftpFolder">ftp目录</param> /// <param name="ftpFileName">ftp文件名</param> public bool DelFile(string ftpFolder, string ftpFileName) { try { if (ftp == null) ftp = this.getFtpClient(); if (!ftp.Connected) { ftp.Connect(); ftp.ChDir(ftpFolder); } ftp.Delete(ftpFileName); return true; } catch { return false; } } /// <summary> /// 上传文件 /// </summary> /// <param name="ftpFolder">ftp目录</param> /// <param name="ftpFileName">ftp文件名</param> public bool PutFile(string ftpFolder, string ftpFileName) { try { if (ftp == null) ftp = this.getFtpClient(); if (!ftp.Connected) { ftp.Connect(); ftp.ChDir(ftpFolder); } ftp.Put(ftpFileName); return true; } catch { return false; } } /// <summary> /// 下载文件 /// </summary> /// <param name="ftpFolder">ftp目录</param> /// <param name="ftpFileName">ftp文件名</param> /// <param name="localFolder">本地目录</param> /// <param name="localFileName">本地文件名</param> public bool GetFileNoBinary(string ftpFolder, string ftpFileName, string localFolder, string localFileName) { try { if (ftp == null) ftp = this.getFtpClient(); if (!ftp.Connected) { ftp.Connect(); ftp.ChDir(ftpFolder); } ftp.GetNoBinary(ftpFileName, localFolder, localFileName); return true; } catch { try { ftp.DisConnect(); ftp = null; } catch { ftp = null; } return false; } } /// <summary> /// 得到FTP上文件信息 /// </summary> /// <param name="ftpFolder">FTP目录</param> /// <param name="ftpFileName">ftp文件名</param> public string GetFileInfo(string ftpFolder, string ftpFileName) { string strResult = ""; try { if (ftp == null) ftp = this.getFtpClient(); if (ftp.Connected) ftp.DisConnect(); ftp.Connect(); ftp.ChDir(ftpFolder); strResult = ftp.GetFileInfo(ftpFileName); return strResult; } catch { return ""; } } /// <summary> /// 测试FTP服务器是否可登陆 /// </summary> public bool CanConnect() { if (ftp == null) ftp = this.getFtpClient(); try { ftp.Connect(); ftp.DisConnect(); return true; } catch { return false; } } /// <summary> /// 得到FTP上文件信息 /// </summary> /// <param name="ftpFolder">FTP目录</param> /// <param name="ftpFileName">ftp文件名</param> public string GetFileInfoConnected(string ftpFolder, string ftpFileName) { string strResult = ""; try { if (ftp == null) ftp = this.getFtpClient(); if (!ftp.Connected) { ftp.Connect(); ftp.ChDir(ftpFolder); } strResult = ftp.GetFileInfo(ftpFileName); return strResult; } catch { return ""; } } /// <summary> /// 得到文件列表 /// </summary> /// <param name="ftpFolder">FTP目录</param> /// <returns>FTP通配符号</returns> public string[] GetFileList(string ftpFolder, string strMask) { string[] strResult; try { if (ftp == null) ftp = this.getFtpClient(); if (!ftp.Connected) { ftp.Connect(); ftp.ChDir(ftpFolder); } strResult = ftp.Dir(strMask); return strResult; } catch { return null; } } /// <summary> ///得到FTP传输对象 /// </summary> public FTPClient getFtpClient() { FTPClient ft = new FTPClient(); ft.RemoteHost = this.Server; ft.RemoteUser = this.User; ft.RemotePass = this.Pass; return ft; } } }

希望本文所述对大家的C#程序设计有所帮助。