Communications :: File Corrupted After FTP Transfer With FtpWebRequest?
Sep 3, 2008
It's working kinda, but at the end when transfer is finished the file on the ftp is corrupted. I found about 3 ecamples online with this class and they all give me the same corruption
Code:
Imports System.Net
Imports System.IO
[code].....
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Nov 29, 2008
I am currently using the below code to upload a file and display progress. It works fine except there are a few things I would like to do differently.
I am using the main FTP account for my website which has access to all of my files. I set up a different FTP login to use that only has access to a specific folder, but when I try to use it I get: Error 550 No such file or directory or access denied.
This FTP account allows access to: mywebsite.com/upload/users/ only If strFTPAddress = mywebsite.com/upload/users/ I get error 550, I've tried a few other things too and it's told me that it's an invalid URI
Basically what I want to know is if and how I might be able to connect using my second FTP account so that I only have access to the upload/users/ directory.
Code:
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Jan 8, 2009
I got a CRC checksum now and I get a Message in this Format SOH, Length Of Incoming Message, Message, CRC Checksum So I have a nice little look to processes the message and everything, Now I have questions on two events, While this loop is running it awaits for Data on the wire to come through and Checks for the SOH, I always get that but what are the chances of NOT getting a SOH, and if I don't what should I do with the Buffer Dump everything Till I come to another SOH? And on another scenario If two Packets are clashed together in one buffer should I always try to Peek and see if the Next byte after the CRC is a SOH to see if there is more Bytes and an whole another command to start Parsing and then take action?
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Jul 31, 2008
I would like to know how is it possible to send data over the network using VB 2005 .... ! It must be capable of being the type of sending short text over the network just like chatting
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Feb 9, 2011
I have a barcode scanner that beside scanning the barcode it also snaps an image. I wrote a simple application that searching all ports locating in which one the scanner is connected and opening the port.
I can easily read any barcode and the send command to the scanner to pass me the image taken on the port, but i have a problem re-constructing the image from the bytes i read.
Code:
sendCommand()
Dim img(SP.BytesToRead) As Byte
SP.Read(img, 0, img.Length)
[Code]....
I can get the image from the scanner in any format needed (jpg,bmp etc) so no need to provide a precise solution just a general idea.
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Mar 27, 2012
I need to transfer Recorded WAV Files betwenn computers. Now I want to transfer C:/Rec/Record.wav from Client to Server, then back, without the client that sent it take it. I know how to do that, the only problem is sending it. How do I do file transfer in winsock vb 10-11?
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Sep 27, 2010
i'm using the code below to display a tutorial about my application, the problem is that when it display it seems to corrupt certain letters. i have attached an image for you to have a better understanding. I'm creating the manual in MSWord2007 and saving it as "Single File Web Page". The file get corrupted on the second 'Using'.
[Code]...
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Aug 20, 2009
I am putting together a simple app and I have it working for uploading, downloading, deleting files using FtpWebRequest. But I cannot find how to move a file using FtpWebRequest. What is the simplest way to move a file from one dir to another without using another external dependancy?
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Mar 21, 2011
I write text to a file using StreamWriter as shown below several times a second. The problem I have is that sometimes these files are left blank after my program has crashed or the computer has crashed. I've done several searches on the internet without any results other then writing to a second file, copying over the file and then deleting the extra file when done. If this method doesn't have any error modes it still appears to be less then a beautiful solution. (What happens if the computer crashes when writing over the original file?)Is there a more secure method for writing the text file that doesn't leave it vulnerable? This happens way too often. I never find errors related to file writing. I really want this code to be reliable enough that I could just pull the plug on the computer
Try
Dim mSW As IO.StreamWriter = New IO.StreamWriter(countFile, False)
mSW.WriteLine(CStr(totalCount))
[code].....
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May 13, 2010
I'm working in this piece of code to transfer a text file from the C: drive to a ftp location. Below is the
Dim clsRequest As System.Net.FtpWebRequest = _
DirectCast(System.Net.WebRequest.Create("ftp://10.0.0.221/sample.txt"), System.Net.FtpWebRequest)
clsRequest.Credentials = New System.Net.NetworkCredential("anonymous", "edge")
clsRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile
' read in file.
[Code]...
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Oct 14, 2009
I am working on an application in vb.net to move files back and forth between a client and a ftp server. We will be creating, deleting, and renaming temporary files during our update process.I want to check for the existence of a temp file before I begin an upload process to keep different users from trying to update the same file at the same time. I have a method (below) to check if the FTP file exists (using ContentLength), but I want to be able to pass in a string with a wildcard such as:
FileServer.FtpFileExists("MyTestFile.*.txt") Can I use a wild card with a FtpWebRequest object? What about a regular expression? Or should I pull down the directory(between 200-500 files) and iterate through that list on the client side trying to match with a regex/widcard? 'Find if File exists from FTP Server for File specified Private Function FtpFileExists(ByVal RemotePath
[code]....
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Jun 27, 2011
I have a vb.net window application to upload text file by using ftpwebrequest to a server. my question is: should I add a server response to the client application to make sure the server actually got the file. what I got now is only client side (to upload file to a folder in the server PC), but I havnt got a server side application to send response. If yes, how to create the server side application
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Dec 27, 2010
I just published this simple console application that is supposed to show a textbox with the value of a setting called "userID" with value 1001. This works like a charm. Now what I need is to change this value outside the editor, from notepad etc. When I open the application a lot in there is non-sence etc. but with a quick (ctrl + F) I found the value 1001, and changed this to some other integer.
I ran the application again, and it failed, didn't even give any userful error-message. At a point I tried just opening a newly published non-corrupted version of the application, didn't change anything, then saved from notepad, and it were also corrupted. It seems like notepad can't open some characters or something. Do I need to publish the application in some specific text-unicode language or something? I use vb.net for this
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Sep 29, 2009
I'm using the System.IO.Packaging namespace to compress a file. I'm getting an error that says 'file contains corrupted data'. So i tried using a txt file with just a few characters, and I got the same error. I read where someone said to make sure you have all streams closed and I checked this and do so I'm not sure what to try now. Here is my code.
[Code]...
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Apr 29, 2012
i have written a small app that:-Periodically captures a portion of a screen to jpeg file-Uploads this file to ftp serverAt first i used My.Computer.Network.UploadFileand it worked like a charm. Then i wanted to move to FtpWebRequest async. The reason was because i implemented a global keyboard hook and locking the main thread for upload, disabled my keyboard.I copied the example in MSDN regarding FtpWebRequest. the problem i have is that it seems that the file that is being uploaded is locke
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Jun 29, 2010
I need to upload a file to an ftp site. Can I use a simple webclient or do I need to use ftpwebrequest? What are the differences?
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Oct 11, 2011
I created a new cursor (it works properly, I tried it in windows 7) but is not working for me in the program.I took the Windows cursor (aero_helpsel_xl, from C:WindowsCursors) and it appears to me the same error.i use with this code:
Me.Cursor = New Cursor("Patch..")
The problem say:: "{"Image format is not valid. Image file may be corrupted.
Parameter name: stream "}"
edit: I realized what the problem ... It can read only cur files with 24-bit color and lower - but it shows only two colors: black and white.
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Jan 11, 2011
Using vb.net 2005 - FtpWebRequest for ListDirectory always gets 550 error The remote server returned an error: (550) File unavailable (e.g., file not found, no access).
On both FTPListDirRequest.Method = System.Net.WebRequestMethods.Ftp.ListDirectory
FTPListDirRequest.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails
[Code]...
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Mar 20, 2012
I will use the Background Intelligent Transfer Service (BITS) to transfer files from a client (laptop) to a shared folder on a server within our local network.The problem is a very slow network bandwith, if we transfer a file, the other clients canīt work, all requests to other clients (application) or viewing internet pages needs a long time.My idea is to use BITS in my tool to copy/transfer a file from client to server, also I hope to get more performance for the internet requests.
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Jan 26, 2009
I am using VB2008 Express and am curious how to send a command via RS232 communications. The string that I need to send is 02h PON 03h. The start and end bits are 02h and 03h.
How can I convert 02h and 03h to its ascii form. In hyperterminal, I use the sequence {(hold)ALT 0 0 2} on the number pad to send the start bit.
I am using this code currently without the start and end bits
Code:
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Apr 11, 2011
I have an excel file i want to copy all the row of that excel file into a .txt file.In the txt file the separator is comma.
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Aug 21, 2008
Code:
Private Function web_scan(ByVal code As String) As String
Dim myReg As Net.HttpWebRequest = _
DirectCast(Net.WebRequest.Create(ServerSelect.Text & "/scanner.php?code=" & code), _
[Code]....
I need to give a variable to php file via GET and recive responce. HttpWebResponse dosen't work on my PocketPC so I need n alternative.
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Aug 22, 2011
I simply want to be able to delete a file via ftp. What irritates me is, it is so easy to upload a file but so much harder to delete a file.
way to delete a file over FTP using visual basic
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Jun 11, 2009
I'm trying to upload a file via an IP address using the System.Network.UploadFile method. I have the IP address like this:xxx.xxx.x.x
At runtime, it says that it isn't a valid remote address because a valid address should include a protocol, a path and a file name.
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Feb 23, 2012
am writing the pgm using vb.net to get the file from reomte machine & store it on local machine using FTP . but am always getting an error like "remote machine returned an error :(550) file un avaliable (e.g , file not found, no access)
Dim reqFTP As FtpWebRequest
Dim filepath As String
Dim filename As String
Dim filename1 As String
[code]....
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May 8, 2010
I want to read a file and write it into another file.
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Apr 26, 2010
I wrote some code to share files throughout my network. The thing is that i don't understand how to determine how much the client has sent already and how much is left. I have posted my code below so you guys can see what I'm talking about.[code]...
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Mar 15, 2011
I need to transfer files from one server to multiple cients (using the internet) in the fastest possible way in .NET . What are the different types of transfer protocols which can be used in .NET or VB.NET so that the files are sent in a very short time ? I have tried using FTP, but that is slow because it requires authentication, handshaking etc. What i want to know is the options which we have in .NET for sending files in the fastest possible way between a server and multiple clients.
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Jun 22, 2010
I wrote a code to send file as below:
Dim objXMLDoc As New XmlDocument
objXMLDoc.Load("C:InetpubwwwrootXMLSchema_TestXML1773777.xml")
Dim blnResponse As Boolean
[code].....
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Mar 21, 2011
I am writing a program in vb.net 2008 and need to be able to send and receive files using Zmodem through the a comport. I have search the net and have not found much to do with Zmodem in VB.net. I am already using the System.IO.Ports.SerialPort to send and receive commands through the comport but how to send or receive a file using the Zmodem protocol.
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