C#实现自定义FTP操作封装类实例

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。