/// <summary>
/// Prüft ein FTP-Verzeichnis und gibt Grün wieder, wenn vorhadnen, sonst rot.
/// </summary>
/// <param name="dirPath"></param>
/// <returns></returns>
public static System.Windows.Media.Brush DoesFtpDirectoryExist(string dirPath)
{
try
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(dirPath);
request.Credentials = new NetworkCredential(Var.FtpUsername1, Var.FtpPassword1);
request.Timeout = 4000;
request.Method = WebRequestMethods.Ftp.ListDirectory;
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
return(Brushes.Green);
}
catch (WebException ex)
{
IO.Log(2018061814, "DoesFtpDirectoryExist() | '" + dirPath + "' existiert nicht. | " + ex.Message);
return(Brushes.Red);
}
catch (Exception ex)
{
IO.Log(2018062003, "DoesFtpDirectoryExist() | '" + dirPath + "' existiert nicht. | " + ex.GetType() + " | " + ex.Message);
return(Brushes.Red);
}
}
/* Get the Date/Time a File was Created */
public string GetFileCreatedDateTime(string fileName)
{
try
{
/* Create an FTP Request */
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/" + fileName);
/* Log in to the FTP Server with the User Name and Password Provided */
ftpRequest.Credentials = new NetworkCredential(user, pass);
/* When in doubt, use these options */
ftpRequest.UseBinary = true;
ftpRequest.UsePassive = true;
ftpRequest.KeepAlive = true;
/* Specify the Type of FTP Request */
ftpRequest.Method = WebRequestMethods.Ftp.GetDateTimestamp;
/* Establish Return Communication with the FTP Server */
ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
/* Establish Return Communication with the FTP Server */
ftpStream = ftpResponse.GetResponseStream();
/* Get the FTP Server's Response Stream */
StreamReader ftpReader = new StreamReader(ftpStream);
/* Store the Raw Response */
string fileInfo = null;
/* Read the Full Response Stream */
try { fileInfo = ftpReader.ReadToEnd(); }
catch (Exception ex) { IO.Log(2018061804, "ftp, getFileCreatedDateTime | " + ex.ToString()); }
/* Resource Cleanup */
ftpReader.Close();
ftpStream.Close();
ftpResponse.Close();
ftpRequest = null;
/* Return File Created Date Time */
return(fileInfo);
}
catch (Exception ex) { IO.Log(2018061805, "ftp, getFileCreatedDateTime | " + ex.ToString()); }
/* Return an Empty string Array if an Exception Occurs */
return("");
}
//Calling the method:
//string ftpDirectory = "ftp://ftpserver.com/rootdir/test_if_exist_directory/"; //Note: backslash at the last position of the path.
//bool dirExists = DoesFtpDirectoryExist(ftpDirectory);
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// von http://csharp-blog.de/2015/11/c-asyncawait-fortschritts-benachrichtigung-und-abbruch-moeglichkeit/
public static async Task DownloadFileAsync(Uri ftpSite, string targetPath, IProgress <int> onProgressChanged, CancellationToken token)
{
try
{
//File.Create(Path.Combine(targetPath));
int totalBytes = 0;
long fileSize = 0;
Thread.Sleep(Var.SleepingMilliSec);
FtpWebRequest requestS = (FtpWebRequest)WebRequest.Create(ftpSite);
requestS.Credentials = new NetworkCredential(Var.FtpUsername1, Var.FtpPassword1);
requestS.Method = WebRequestMethods.Ftp.GetFileSize;
using (FtpWebResponse response = (FtpWebResponse)await requestS.GetResponseAsync())
{
fileSize = response.ContentLength;
response.Close();
Thread.Sleep(Var.SleepingMilliSec);
}
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpSite);
request.Credentials = new NetworkCredential(Var.FtpUsername1, Var.FtpPassword1);
request.Method = WebRequestMethods.Ftp.DownloadFile;
using (FtpWebResponse response = (FtpWebResponse)await request.GetResponseAsync())
{
Stream data = response.GetResponseStream();
//Console.WriteLine($"Downloading {ftpSite.AbsoluteUri} to {targetPath}...");
IO.Log(2018061904, $"Starte Download von {ftpSite.AbsoluteUri} nach {targetPath}");
byte[] byteBuffer = new byte[4096];
using (FileStream output = new FileStream(targetPath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite, 4096, useAsync: true))
{
int bytesRead = 1;
while (bytesRead > 0)
{
bytesRead = await data.ReadAsync(byteBuffer, 0, byteBuffer.Length);
if (bytesRead > 0)
{
totalBytes += bytesRead;
// Report progress
int locProgress = Convert.ToInt32(totalBytes * 100 / fileSize);
onProgressChanged?.Report(locProgress);
// Upload
await output.WriteAsync(byteBuffer, 0, bytesRead, token);
}
}
}
//Console.WriteLine($"Downloaded {ftpSite.AbsoluteUri} to {targetPath}");
IO.Log(2018061905, $"Download von {ftpSite.AbsoluteUri} nach {targetPath} war erfolgreich.");
}
}
catch (OperationCanceledException)
{
//Console.Write("Download cancelled!");
IO.Log(2018061906, "Download abgebrochen.");
}
catch (WebException e)
{
//Console.WriteLine($"Failed to download {ftpSite.AbsoluteUri} to {targetPath}");
//Console.WriteLine(e);
IO.Log(2018061907, $"Download fehlgeschlagen: {ftpSite.AbsoluteUri} nach {targetPath} : " + e.Message);
throw;
}
}