c#操作ftp类分享

class ftp
{
    private string host = null;
    private string user = null;
    private string pass = null;
    private ftpwebrequest ftprequest = null;
    private ftpwebresponse ftpresponse = null;
    private stream ftpstream = null;
    private int buffersize = 2048;

    public ftp(string hostip, string username, string password) { host = hostip; user = username; pass = password; }

    public void download(string remotefile, string localfile)
    {
        try
        {
            ftprequest = (ftpwebrequest)ftpwebrequest.create(host + "/" + remotefile);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.downloadfile;
            ftpresponse = (ftpwebresponse)ftprequest.getresponse();
            ftpstream = ftpresponse.getresponsestream();
            filestream localfilestream = new filestream(localfile, filemode.create);
            byte[] bytebuffer = new byte[buffersize];
            int bytesread = ftpstream.read(bytebuffer, 0, buffersize);
            try
            {
                while (bytesread > 0)
                {
                    localfilestream.write(bytebuffer, 0, bytesread);
                    bytesread = ftpstream.read(bytebuffer, 0, buffersize);
                }
            }
            catch (exception ex) { console.writeline(ex.tostring()); }
            localfilestream.close();
            ftpstream.close();
            ftpresponse.close();
            ftprequest = null;
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return;
    }

    public void upload(string remotefile, string localfile)
    {
        try
        {
            ftprequest = (ftpwebrequest)ftpwebrequest.create(host + "/" + remotefile);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.uploadfile;
            ftpstream = ftprequest.getrequeststream();
            filestream localfilestream = new filestream(localfile, filemode.create);
            byte[] bytebuffer = new byte[buffersize];
            int bytessent = localfilestream.read(bytebuffer, 0, buffersize);
            try
            {
                while (bytessent != 0)
                {
                    ftpstream.write(bytebuffer, 0, bytessent);
                    bytessent = localfilestream.read(bytebuffer, 0, buffersize);
                }
            }
            catch (exception ex) { console.writeline(ex.tostring()); }
            localfilestream.close();
            ftpstream.close();
            ftprequest = null;
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return;
    }

    public void delete(string deletefile)
    {
        try
        {
            ftprequest = (ftpwebrequest)webrequest.create(host + "/" + deletefile);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.deletefile;
            ftpresponse = (ftpwebresponse)ftprequest.getresponse();
            ftpresponse.close();
            ftprequest = null;
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return;
    }

    public void rename(string currentfilenameandpath, string newfilename)
    {
        try
        {
            ftprequest = (ftpwebrequest)webrequest.create(host + "/" + currentfilenameandpath);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.rename;
            ftprequest.renameto = newfilename;
            ftpresponse = (ftpwebresponse)ftprequest.getresponse();
            ftpresponse.close();
            ftprequest = null;
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return;
    }

    public void createdirectory(string newdirectory)
    {
        try
        {
            ftprequest = (ftpwebrequest)webrequest.create(host + "/" + newdirectory);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.makedirectory;
            ftpresponse = (ftpwebresponse)ftprequest.getresponse();
            ftpresponse.close();
            ftprequest = null;
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return;
    }

    public string getfilecreateddatetime(string filename)
    {
        try
        {
            ftprequest = (ftpwebrequest)ftpwebrequest.create(host + "/" + filename);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.getdatetimestamp;
            ftpresponse = (ftpwebresponse)ftprequest.getresponse();
            ftpstream = ftpresponse.getresponsestream();
            streamreader ftpreader = new streamreader(ftpstream);
            string fileinfo = null;
            try { fileinfo = ftpreader.readtoend(); }
            catch (exception ex) { console.writeline(ex.tostring()); }
            ftpreader.close();
            ftpstream.close();
            ftpresponse.close();
            ftprequest = null;
            return fileinfo;
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return "";
    }

    public string getfilesize(string filename)
    {
        try
        {
            ftprequest = (ftpwebrequest)ftpwebrequest.create(host + "/" + filename);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.getfilesize;
            ftpresponse = (ftpwebresponse)ftprequest.getresponse();
            ftpstream = ftpresponse.getresponsestream();
            streamreader ftpreader = new streamreader(ftpstream);
            string fileinfo = null;
            try { while (ftpreader.peek() != -1) { fileinfo = ftpreader.readtoend(); } }
            catch (exception ex) { console.writeline(ex.tostring()); }
            ftpreader.close();
            ftpstream.close();
            ftpresponse.close();
            ftprequest = null;
            return fileinfo;
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return "";
    }

    public string[] directorylistsimple(string directory)
    {
        try
        {
            ftprequest = (ftpwebrequest)ftpwebrequest.create(host + "/" + directory);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.listdirectory;
            ftpresponse = (ftpwebresponse)ftprequest.getresponse();
            ftpstream = ftpresponse.getresponsestream();
            streamreader ftpreader = new streamreader(ftpstream);
            string directoryraw = null;
            try { while (ftpreader.peek() != -1) { directoryraw += ftpreader.readline() + "|"; } }
            catch (exception ex) { console.writeline(ex.tostring()); }
            ftpreader.close();
            ftpstream.close();
            ftpresponse.close();
            ftprequest = null;
            try { string[] directorylist = directoryraw.split("|".tochararray()); return directorylist; }
            catch (exception ex) { console.writeline(ex.tostring()); }
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return new string[] { "" };
    }

    public string[] directorylistdetailed(string directory)
    {
        try
        {
            ftprequest = (ftpwebrequest)ftpwebrequest.create(host + "/" + directory);
            ftprequest.credentials = new networkcredential(user, pass);
            ftprequest.usebinary = true;
            ftprequest.usepassive = true;
            ftprequest.keepalive = true;
            ftprequest.method = webrequestmethods.ftp.listdirectorydetails;
            ftpresponse = (ftpwebresponse)ftprequest.getresponse();
            ftpstream = ftpresponse.getresponsestream();
            streamreader ftpreader = new streamreader(ftpstream);
            string directoryraw = null;
            try { while (ftpreader.peek() != -1) { directoryraw += ftpreader.readline() + "|"; } }
            catch (exception ex) { console.writeline(ex.tostring()); }
            ftpreader.close();
            ftpstream.close();
            ftpresponse.close();
            ftprequest = null;
            try { string[] directorylist = directoryraw.split("|".tochararray()); return directorylist; }
            catch (exception ex) { console.writeline(ex.tostring()); }
        }
        catch (exception ex) { console.writeline(ex.tostring()); }
        return new string[] { "" };
    }
}

ftp ftpclient = new ftp(@"ftp://10.10.10.10/", "user", "password");
ftpclient.upload("etc/test.txt", @"c:\users\metastruct\desktop\test.txt");
ftpclient.download("etc/test.txt", @"c:\users\metastruct\desktop\test.txt");
ftpclient.delete("etc/test.txt");
ftpclient.rename("etc/test.txt", "test2.txt");
ftpclient.createdirectory("etc/test");
string filedatetime = ftpclient.getfilecreateddatetime("etc/test.txt");
console.writeline(filedatetime);
string filesize = ftpclient.getfilesize("etc/test.txt");
console.writeline(filesize);
string[] simpledirectorylisting = ftpclient.directorylistdetailed("/etc");
for (int i = 0; i < simpledirectorylisting.count(); i++) { console.writeline(simpledirectorylisting[i]);
string[] detaildirectorylisting = ftpclient.directorylistdetailed("/etc");
for (int i = 0; i < detaildirectorylisting.count(); i++) { console.writeline(detaildirectorylisting[i]); }
ftpclient = null;