Active9 months ago
- How To Ftp A Directory
- Download All Files Ftp Directory Vb Net Removed
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- Ftp Directory Command
- Download All Files Ftp Directory Vb Net Remove Record From Datatable
I searched all over the internet about my question but I found answer for C# only, but none for VB.NET.
I want to download all the files and sub-directories of a directory on my FTP server.
How to list directory contents of an FTP connection. Ask Question 4. I can't find a tutorial on this. Into a situation where I need to list FTP directories in a framework 3.5 project So I wrote following code by referring How to: List Directory Contents with FTP. Imports System.Net Dim Dirlist As New List(Of String) 'I prefer List() instead. Get FTP Directory Listing as XML FTP Connect, Examine Server Certificate, and then Authenticate FTP Set Remote File Date/Time Equal to Local File's Last-Modified Date/Time. C#.NET - download entire directory from ftp - Asked By goldy gupta on 04-May-11 06:38 AM. For being able to download all files from a FTP directory to a local folder, you will have to list all files in the remote directory and then download them one by one. // to remove the trailing ' n' result.Remove(result.ToString().LastIndexOf.
I am currently doing it by downloading a ZIP file from my FTP server and extracting it but this is not a good method.
Thanks!
Martin Prikryl101k2727 gold badges212212 silver badges442442 bronze badges
MatrixCow08MatrixCow08
2 Answers
I KNOW YOU MIGHT BE LAZY TO READ ALL THAT, BUT THIS IS THE ANSWER!!! THE CODE IS AT THE END :D
Hello,
It is very simple to do using the WinSCP library which is available for C# and VB.NET - here is the full answer:
Firsly, install the WinSCP library to your project, see here: https://winscp.net/eng/docs/library#downloading_and_installing_the_assembly
Or if you are lazy to do it, then just download the library and add the DLL file as a reference in your project.
And now let's download the whole directory including its files and its sub-directories to the local storage.
You have 2 options:
- Session.GetFiles to download even if the files & directories are already downloaded.
- Session.SynchronizeDirectories to download the files & directories if they does not exists, and also will download the the modified files which already exists. (BEST and better than the first option).
I used the second option of course because it is the best one ever. However, if you want to use the Session.GetFiles method... you can see the VB.NET example here: https://winscp.net/eng/docs/library_session_getfiles#vbnet
![Download All Files Ftp Directory Vb Net Remove Download All Files Ftp Directory Vb Net Remove](/uploads/1/3/3/9/133900790/739272167.gif)
And here is how I used the second option: https://winscp.net/eng/docs/faq_script_modified_files
As you can see, everything is explained great!
Basically use
synchronize local
instead of get
and synchronize remote
instead of put
.With WinSCP .NET assembly that means, use Session.SynchronizeDirectories, with argument mode set to SynchronizationMode.Remote or SynchronizationMode.Local instead of Session.GetFiles or Session.PutFiles respectively.
And as I wanted to download the files from the FTP Server to my local PC, then here is what I used (SynchronizeDirectories):
- So yes! Of course
Imports WinSCP
first :-) - Use this code, because the code on https://winscp.net/eng/docs/library_session_synchronizedirectories#vbnet is for SFTP (port 22) and not FTP (port 21) ... and also it uses
SynchronizeMode.Remote
which uploads from your PC to the FTP server , so in the code below I replaced.Remote
with.Local
Don't forget to replace the credentials and the paths..
One more thing? Good luck on your project! :-)
MatrixCow08MatrixCow08
Translating my answer to C# Download all files and subdirectories through FTP to VB.NET:
The
FtpWebRequest
does not have any explicit support for recursive file operations (including downloads). You have to implement the recursion yourself:- List the remote directory
- Iterate the entries, downloading files and recursing into subdirectories (listing them again, etc.)
Tricky part is to identify files from subdirectories. There's no way to do that in a portable way with the
FtpWebRequest
. The FtpWebRequest
unfortunately does not support the MLSD
command, which is the only portable way to retrieve directory listing with file attributes in FTP protocol. See also Checking if object on FTP server is file or directory.Your options are:
- Do an operation on a file name that is certain to fail for file and succeeds for directories (or vice versa). I.e. you can try to download the 'name'. If that succeeds, it's a file, if that fails, it's a directory.
- You may be lucky and in your specific case, you can tell a file from a directory by a file name (i.e. all your files have an extension, while subdirectories do not)
- You use a long directory listing (
LIST
command =ListDirectoryDetails
method) and try to parse a server-specific listing. Many FTP servers use *nix-style listing, where you identify a directory by thed
at the very beginning of the entry. But many servers use a different format. The following example uses this approach (assuming the *nix format)
Use the function like:
If you want to avoid troubles with parsing the server-specific directory listing formats, use a 3rd party library that supports the
MLSD
command and/or parsing various LIST
listing formats; and recursive downloads.How To Ftp A Directory
For example with WinSCP .NET assembly you can download whole directory with a single call to the
Session.GetFiles
:Internally, WinSCP uses the
MLSD
command, if supported by the server. If not, it uses the LIST
command and supports dozens of different listing formats.The
Session.GetFiles
method is recursive by default.(I'm the author of WinSCP)
Martin PrikrylMartin Prikryl101k2727 gold badges212212 silver badges442442 bronze badges
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Active9 months ago
General Info
I'm still in the process of learning C#. To help myself out, I'm trying to create a program that will automatically synchronise all of my local projects with a folder on my FTP server. This so that whether I'm at school or at home, I always have the same projects available to me.
I'm still in the process of learning C#. To help myself out, I'm trying to create a program that will automatically synchronise all of my local projects with a folder on my FTP server. This so that whether I'm at school or at home, I always have the same projects available to me.
I know there are programs like Dropbox that already do this for me, but I figured creating something like that myself will teach me a lot along the way.
The problem
My first step towards my goal was to just download all files, subdirectories and subfiles from my FTP server. I've managed to download all files from a directory with the code below. However, my code only lists the folder names and the files in the main directory. Subfolders and subfiles are never returned and never downloaded. Aside from that, the server returns a 550 error because I'm trying to download the folders as if they are files. I've been on this for 4+ hours now, but I just can't find anything on how to fix these problems and make it work. Therefor I'm hoping you guys will help me out :)
My first step towards my goal was to just download all files, subdirectories and subfiles from my FTP server. I've managed to download all files from a directory with the code below. However, my code only lists the folder names and the files in the main directory. Subfolders and subfiles are never returned and never downloaded. Aside from that, the server returns a 550 error because I'm trying to download the folders as if they are files. I've been on this for 4+ hours now, but I just can't find anything on how to fix these problems and make it work. Therefor I'm hoping you guys will help me out :)
Code
Martin Prikryl101k2727 gold badges212212 silver badges442442 bronze badges
icecubicecub6,08833 gold badges2727 silver badges5454 bronze badges
1 Answer
The
FtpWebRequest
does not have any explicit support for recursive file operations (including downloads). You have to implement the recursion yourself:- List the remote directory
- Iterate the entries, downloading files and recursing into subdirectories (listing them again, etc.)
Tricky part is to identify files from subdirectories. There's no way to do that in a portable way with the
FtpWebRequest
. The FtpWebRequest
unfortunately does not support the MLSD
command, which is the only portable way to retrieve directory listing with file attributes in FTP protocol. See also Checking if object on FTP server is file or directory.Your options are:
Download All Files Ftp Directory Vb Net Removed
- Do an operation on a file name that is certain to fail for file and succeeds for directories (or vice versa). I.e. you can try to download the 'name'. If that succeeds, it's a file, if that fails, it's a directory.
- You may be lucky and in your specific case, you can tell a file from a directory by a file name (i.e. all your files have an extension, while subdirectories do not)
- You use a long directory listing (
LIST
command =ListDirectoryDetails
method) and try to parse a server-specific listing. Many FTP servers use *nix-style listing, where you identify a directory by thed
at the very beginning of the entry. But many servers use a different format. The following example uses this approach (assuming the *nix format)
Use the function like:
Download All Files Ftp Directory Vb Net Remove Authenticator
If you want to avoid troubles with parsing the server-specific directory listing formats, use a 3rd party library that supports the
MLSD
command and/or parsing various LIST
listing formats; and recursive downloads.Ftp Directory Command
For example with WinSCP .NET assembly you can download whole directory with a single call to the
Session.GetFiles
:Internally, WinSCP uses the
MLSD
command, if supported by the server. If not, it uses the LIST
command and supports dozens of different listing formats.The
Session.GetFiles
method is recursive by default.(I'm the author of WinSCP)
Martin PrikrylMartin Prikryl101k2727 gold badges212212 silver badges442442 bronze badges
Download All Files Ftp Directory Vb Net Remove Record From Datatable
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