回答
FtpWebRequest提供刪除操作。 下面是一段代碼來實現這一目標:
FtpWebRequest reqFTP = FtpWebRequest.Create(uri);
// Credentials and login handling...
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
string result = string.Empty;
FtpWebResponse response = reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
應該對文件和目錄。的確,請檢查您是否擁有正確的權限。
此外,您不能刪除文件夾,而他們不是空的。您必須遞歸遍歷它們才能刪除內容。
由於拋到正確的權限問題並不總是很清楚的例外...
當使用`WebRequestMethods.Ftp.DeleteFile`選項來嘗試刪除FTP服務器上的文件夾時,我得到'文件未找到'錯誤。當使用`WebRequestMethods.Ftp.RemoveDirectory`選項時,該目錄已成功刪除。 – Sheridan 2013-02-27 11:28:00
即使空文件夾沒有刪除文件夾 – 2014-03-25 00:21:19
我找到工作的唯一方法是依靠「WebRequestMethods.Ftp.DeleteFile」,它會給一個異常櫃面與文件的文件夾或文件夾,所以我創建了一個新interenal方法deletedirectory遞歸 這裏是代碼
public void delete(string deleteFile)
{
try
{
/* Create an FTP Request */
ftpRequest = (FtpWebRequest)WebRequest.Create(host + "/" + deleteFile);
/* 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.DeleteFile;
/* Establish Return Communication with the FTP Server */
ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
/* Resource Cleanup */
ftpResponse.Close();
ftpRequest = null;
}
catch (Exception ex) {
//Console.WriteLine(ex.ToString());
try
{
deleteDirectory(deleteFile);
}
catch { }
}
return;
}
和目錄刪除
/* Delete Directory*/
private void deleteDirectory(string directoryName)
{
try
{
//Check files inside
var direcotryChildren = directoryListSimple(directoryName);
if (direcotryChildren.Any() && (!string.IsNullOrWhiteSpace(direcotryChildren[0])))
{
foreach (var child in direcotryChildren)
{
delete(directoryName + "/" + child);
}
}
/* Create an FTP Request */
ftpRequest = (FtpWebRequest)WebRequest.Create(host + "/" + directoryName);
/* 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.RemoveDirectory;
/* Establish Return Communication with the FTP Server */
ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
/* Resource Cleanup */
ftpResponse.Close();
ftpRequest = null;
}
catch (Exception ex) { Console.WriteLine(ex.ToString()); }
return;
}
列表Direcotry孩子
/* List Directory Contents File/Folder Name Only */
public string[] directoryListSimple(string directory)
{
try
{
/* Create an FTP Request */
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/" + directory);
/* 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.ListDirectory;
/* 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 directoryRaw = null;
/* Read Each Line of the Response and Append a Pipe to Each Line for Easy Parsing */
try { while (ftpReader.Peek() != -1) { directoryRaw += ftpReader.ReadLine() + "|"; } }
catch (Exception ex) { Console.WriteLine(ex.ToString()); }
/* Resource Cleanup */
ftpReader.Close();
ftpStream.Close();
ftpResponse.Close();
ftpRequest = null;
/* Return the Directory Listing as a string Array by Parsing 'directoryRaw' with the Delimiter you Append (I use | in This Example) */
try { string[] directoryList = directoryRaw.Split("|".ToCharArray()); return directoryList; }
catch (Exception ex) { Console.WriteLine(ex.ToString()); }
}
catch (Exception ex) { Console.WriteLine(ex.ToString()); }
/* Return an Empty string Array if an Exception Occurs */
return new string[] { "" };
}
/* List Directory Contents in Detail (Name, Size, Created, etc.) */
public string[] directoryListDetailed(string directory)
{
try
{
/* Create an FTP Request */
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/" + directory);
/* 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.ListDirectoryDetails;
/* 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 directoryRaw = null;
/* Read Each Line of the Response and Append a Pipe to Each Line for Easy Parsing */
try { while (ftpReader.Peek() != -1) { directoryRaw += ftpReader.ReadLine() + "|"; } }
catch (Exception ex) { Console.WriteLine(ex.ToString()); }
/* Resource Cleanup */
ftpReader.Close();
ftpStream.Close();
ftpResponse.Close();
ftpRequest = null;
/* Return the Directory Listing as a string Array by Parsing 'directoryRaw' with the Delimiter you Append (I use | in This Example) */
try { string[] directoryList = directoryRaw.Split("|".ToCharArray()); return directoryList; }
catch (Exception ex) { Console.WriteLine(ex.ToString()); }
}
catch (Exception ex) { Console.WriteLine(ex.ToString()); }
/* Return an Empty string Array if an Exception Occurs */
return new string[] { "" };
}
`UseBinary`和`UsePassive`對`RemoveDirectory`和`DeleteFile`沒有任何影響,所以在設置它時會令人困惑。無論如何,它們都默認爲`true`(對於`KeepAlive`也是一樣的)。 – 2016-09-09 13:17:43
public void Deletedir(string remoteFolder)
{
try
{
/* Create an FTP Request */
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/"+ remoteFolder);
/* 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;***strong text***
ftpRequest.UsePassive = true;
ftpRequest.KeepAlive = true;
/* Specify the Type of FTP Request */
ftpRequest.Method = WebRequestMethods.Ftp.RemoveDirectory;
/* Establish Return Communication with the FTP Server */
ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
/* Get the FTP Server's Response Stream */
ftpStream = ftpResponse.GetResponseStream();
/* Open a File Stream to Write the Downloaded File */
}
catch { }
}
這就是你可以使用的代碼。 這裏是你如何使用它,例如,點擊按鈕。
private void button5_Click(object sender, EventArgs e)
{
ftp ftpClient = new ftp(@"SERVICE PROVIDER", "USERNAME", "PASSWORD");
ftpClient.Deletedir("DIRECTORY U WANT TO DELETE");
}
只要記住您的文件夾應該是空的。
要刪除空目錄,使用FtpWebRequest
的RemoveDirectory
「方法」:
void DeleteFtpDirectory(string url, NetworkCredential credentials)
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(url);
request.Method = WebRequestMethods.Ftp.RemoveDirectory;
request.Credentials = credentials;
request.GetResponse().Close();
}
這樣使用它:
string url = "ftp://ftp.example.com/directory/todelete";
NetworkCredential credentials = new NetworkCredential("username", "password");
DeleteFtpDirectory(url, credentials);
雖然它獲得的方式更加複雜,如果你需要刪除一個非空的目錄。 FtpWebRequest
類(或.NET框架中的任何其他FTP實現)不支持遞歸操作。你必須執行遞歸自己:
- 列出遠程目錄
- 迭代的條目,刪除文件,並在遞歸到子目錄(再次列出這些,等)
棘手的部分是從子目錄中識別文件。 FtpWebRequest
無法通過便攜式方式執行此操作。 FtpWebRequest
不幸地不支持MLSD
命令,這是在FTP協議中使用文件屬性檢索目錄列表的唯一便攜方式。另請參閱Checking if object on FTP server is file or directory。
的選項有:
- 上那是一定要失敗的文件,併成功爲目錄(反之亦然)的文件名再做一次手術。即你可以嘗試下載「名稱」。如果成功,它就是一個文件,如果失敗了,它就是一個目錄。但是,如果您有大量條目,這可能會成爲性能問題。
- 你可能是幸運的,在特定情況下,可以通過文件名告訴從目錄中的文件(即所有文件的擴展名,而子目錄不)
- 您使用長的目錄列表(
LIST
命令=ListDirectoryDetails
方法)並嘗試解析服務器特定的列表。許多FTP服務器使用* nix風格的列表,其中您在入口最開始處用d
標識目錄。但是許多服務器使用不同的格式。以下示例使用此方法(假定爲* nix格式)。 - 在這種特定情況下,您可以嘗試將條目作爲文件刪除。如果刪除失敗,請嘗試將該條目列爲目錄。如果列表成功,您會認爲它是一個文件夾並據此進行操作。不幸的是,當您嘗試列出文件時,某些服務器不會出錯。他們只會爲文件返回一個包含單個條目的列表。
static void DeleteFtpDirectory(string url, NetworkCredential credentials)
{
FtpWebRequest listRequest = (FtpWebRequest)WebRequest.Create(url);
listRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
listRequest.Credentials = credentials;
List<string> lines = new List<string>();
using (FtpWebResponse listResponse = (FtpWebResponse)listRequest.GetResponse())
using (Stream listStream = listResponse.GetResponseStream())
using (StreamReader listReader = new StreamReader(listStream))
{
while (!listReader.EndOfStream)
{
lines.Add(listReader.ReadLine());
}
}
foreach (string line in lines)
{
string[] tokens =
line.Split(new[] { ' ' }, 9, StringSplitOptions.RemoveEmptyEntries);
string name = tokens[8];
string permissions = tokens[0];
string fileUrl = url + name;
if (permissions[0] == 'd')
{
DeleteFtpDirectory(fileUrl + "/", credentials);
}
else
{
FtpWebRequest deleteRequest = (FtpWebRequest)WebRequest.Create(fileUrl);
deleteRequest.Method = WebRequestMethods.Ftp.DeleteFile;
deleteRequest.Credentials = credentials;
deleteRequest.GetResponse();
}
}
FtpWebRequest removeRequest = (FtpWebRequest)WebRequest.Create(url);
removeRequest.Method = WebRequestMethods.Ftp.RemoveDirectory;
removeRequest.Credentials = credentials;
removeRequest.GetResponse();
}
使用它的方式與以前的(平面)實現相同。
或者使用支持遞歸操作的第三方庫。
例如與WinSCP .NET assembly就可以刪除與單個調用整個目錄到Session.RemoveFiles
:
// Setup session options
SessionOptions sessionOptions = new SessionOptions
{
Protocol = Protocol.Ftp,
HostName = "example.com",
UserName = "user",
Password = "mypassword",
};
using (Session session = new Session())
{
// Connect
session.Open(sessionOptions);
// Delete folder
session.RemoveFiles("/directory/todelete").Check();
}
內部,WinSCP賦予使用MLSD
命令,如果服務器支持。如果不是,則使用LIST
命令並支持數十種不同的列表格式。
(我的WinSCP的作者)
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您登錄時所需要的用戶能夠擁有正確的權限 - 如果他們這樣做,然後他們可以刪除目錄,你會文件 - 如果你沒有,那麼你將有0權限 – stack72 2011-01-25 19:54:32