As you can see in the title it could be a little difficult to answer this question but i really need help Darussalam books in urdu free download.
this is how i been doing the download of a file from a ftp server but i realize that what i do is wrong because the filename changes every 10 minutes that is why i need save the filename into access to make later a comparation and discard the files that are checked in my access table
i don´t know how can i save the filename from the ftp server to use as a variable or read all the filenames in the ftp server of course that i don´t want all the solution but a good start or advice will be great !!!
1 Answer
the only way that can i find was this i hope it could be helpful for someone
basically what i do is make a listdirectory and then pass the information into a listbox and then select the last item to save the filename finally i use as a variable for the download process this is not the best solution but it fit very well in my needs
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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.
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!
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,
Ftp Directory Listing
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
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! :-)
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.
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)
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I can't find a tutorial on this. In VB.NET I want to do a command such as:
I know this is probably not going to be that simple, but can anyone point me to a tutorial or anything?
2 Answers
use this free library http://netftp.codeplex.com/
of course I'm assuming that www.example.com is a FTP server.
AN IMPORTANT NOTE: The library requires the complete Framework 4.0
. You should go to the Build Page of your Project Properties
, click on the Advanced Options
and select Framework 4.0
instead of Framework 4.0 Client Profile
The following method will work for framework 3.5
and higher, I know this question is 3 years old but I ran 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.
Not the answer you're looking for? Browse other questions tagged vb.netftp or ask your own question.
I searched all over the internet about my question but I found answer for C# only, but none for VB.NET.
Vb Net Ftp
I want to download all the files and sub-directories of a directory on my FTP server.
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!
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:
Resident evil 7 free download. 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
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! :-)
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.
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)