Upload File via FTP (VB.NET 2005)

this code will let you upload a file on an ftp server. working on vb.net 2005
i hope it will help u

Upload via FTP Code:

' set up request...
        Dim clsRequest As System.Net.FtpWebRequest = _
            DirectCast(System.Net.WebRequest.Create("ftp://ftp.myserver.com/test.txt"), System.Net.FtpWebRequest)
        clsRequest.Credentials = New System.Net.NetworkCredential("myusername", "mypassword")
        clsRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile
 
        ' read in file...
        Dim bFile() As Byte = System.IO.File.ReadAllBytes("C:\Temp\test.txt")
 
        ' upload file...
        Dim clsStream As System.IO.Stream = _
            clsRequest.GetRequestStream()
        clsStream.Write(bFile, 0, bFile.Length)
        clsStream.Close()
        clsStream.Dispose()

Enjoy

:wave: :wave:
how do i create a new directory on the server and then upload a file?
thanks

Thank you very much, i was suprised how it worked!
Is there anyway to DOWNLOAD a file from the Ftp? that would be awesome.

This is JUST what I needed for my application! it works perfect! Thankyou very much

But is it secure?

Quote:

---

Originally Posted by kake_fisk

But is it secure?

---

FTP is, by default, not encrypted. So no.

Okay :\
But can't you just put in clsrequest.sslenabled = true ?

"The requested URI is invalid for this FTP command."

@ line ->

Code:

---

Dim clsStream As System.IO.Stream = clsRequest.GetRequestStream()

---

If you could help, be great - thank you.

How are you creating 'clsRequest'?

Code:

---

Imports System.Net
Module Module1

    Sub Main()
        Dim clsRequest As System.Net.FtpWebRequest = _
            DirectCast(System.Net.WebRequest.Create("ftp://ftp.interstudios.co.uk"), System.Net.FtpWebRequest)
        clsRequest.Credentials = New System.Net.NetworkCredential("uploadusr", "uploadpw")
        clsRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile

        ' read in file...
        Dim bFile() As Byte = System.IO.File.ReadAllBytes("C:\test.txt")

        ' upload file...
        Dim clsStream As System.IO.Stream = clsRequest.GetRequestStream()
        clsStream.Write(bFile, 0, bFile.Length)
        clsStream.Close()
        clsStream.Dispose()
    End Sub

End Module

---

I haven't really changed anything as of yet.

hi, thx for hint

i was so confused :mad: :confused:

However, what if the server has a proxy that blocks!!!

I keep getting an error message on the first line which says: "Unable to cast object of type 'System.Net.FileWebRequest' to type 'System.Net.FtpWebRequest'." Does anyone have any idea what's causing this? Thanks!

make sureyou have this code at the top of all codes

vb Code:

Imports System.Net

Yes, I have that at the top. I also tried using fully qualified names such as:

Dim clsRequest As System.Net.FtpWebRequest = DirectCast(System.Net.WebRequest.Create("xxxxxxxxxx"), System.Net.FtpWebRequest)

Still, no luck. But I've seen the original code that was posted on multiple websites, so it must work. I'm using VB.Net 2008, and I've tried it using the 2.0 and 3.5 Framework. I'm out of ideas at this point.

The code given in the first post works perfectly fine when running locally:

Dim clsRequest As System.Net.FtpWebRequest = DirectCast(System.Net.WebRequest.Create("ftp://ftp.website.com/Newsletters/" & DateTime.Now.ToString("MMMM-yyyy") & " Newsletter.doc"), System.Net.FtpWebRequest)
clsRequest.Credentials = New System.Net.NetworkCredential("user", "password")
clsRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile
'read in file...

Dim bFile() As Byte = System.IO.File.ReadAllBytes(upControl.PostedFile.FileName)

'upload the file
Dim clsStream As System.IO.Stream = clsRequest.GetRequestStream()
clsStream.Write(bFile, 0, bFile.Length)
clsStream.Close()
clsStream.Dispose()

======


However when I upload my .aspx pages and test the uploading of word documents live (domain hosted by go daddy), the file never gets posted to my Newsletters directory....

Does anyone see something I am doing wrong?

Thanks for any help in advance.

well, it works fine with vb.net but i didn't try with asp.net

The reason why you cannot use that in asp.net is because asp.net does not use the same functionality. I recommend using asp.net's FileUpload control. It is a hell of a lot easier.

Just a quick question about this.
Does this send the file over in binary mode?

i think you can adjust that

The asp.net file upload control is fully customizable. If you check MSDN, under FileUpload Control, you will see a full list of Methods and all the class details.

This code works great for me in .Net 2005, thanks.

But is there any way to monitor upload progress?

Simple enough, with the fileupload control, grab the filesize using, I think, fileupload(whatever the name for your control is, if it was for pics, I would 'id' it as 'fileupload_pics'. so use something like:
//
Dim filesize = fileupload_pics.filebytes
//

the .filebytes member of the fileupload control gets the filesize from the selected file. Be sure to input logic to make sure that a file was selected and exists.
From there, you want to monitor how much data is uploaded and compare. I think Javascript has native support for monitoring how much data is being uploaded. .Net does as well, but its server side and you wouldn't want to post back everytime there was an update, even via ajax as its more cumbersome and still does a partial postback regardless. The best way is to use client side code to just update. Have javascript monitor the current amount uploaded after the click event to the full file size by passing the filebytes variable to the Javascript. For the progress bar, a good idea is to create a div with, say a width of 100px and a border. Then use javascript to put in a background. You can even use a gif and use a third div and subtract that one, so you have a nice flowing animation as well, but back on track... Make the script loop through continuously, maybe, at intervals of 25-50ms. Every 1/100th % of the file that is uploaded on comparision, add 1 pixel. You can scale the div to whatever pixel width you need. I was just using a 100px div as an example.

Sound good?

Hi

I did it by altering the "upload file" part of the original code to do the following:

Code:

---

            ' upload file...
            Dim clsStream As System.IO.Stream = clsRequest.GetRequestStream()
            intChunk = bFile.Length / 100
            pbUpload.Maximum = 100
            For I As Integer = 1 To 100
                If intOffset + intChunk > bFile.Length Then intChunk = bFile.Length - intOffset
                clsStream.Write(bFile, intOffset, intChunk)
                intOffset += intChunk
                pbUpload.Value = I
            Next
            clsStream.Close()
            clsStream.Dispose()

---

Which seems to work hundreds for me.

:), please rate if it helped:)

thx

I get this error when I try to run it:

The requested URI is invalid for this FTP command.

any ideas on how to fix it?

Hi,

Can you post ur code please

just used the code u posted

I put this code in my progect but when I did a little pass large files and entered the program as a whole hangs situation is not responding to end the transfer a large file.
It was the Cshapradti the rest of the software to form2.
What should I do?
tnx`

hi,
I'm getting a reply from the server saying that it is entering Passive mode.
the reply is captured as an exception.
Is there a way around it?
Can I ignore the server response? can I change something in the code to make sure the server will not use passive mode? Anything else I can do?

Gil

The code below is quite impressive and worked first time for me (thanks met0555).
I have a simple text file which I can successfully upload to my Web Server. However, on viewing the text either directly on the Web Server, or by viewing the source in a Web Browser, I have a double line break in place of a single one and the page goes on for ever! The server I'm uploading to is: Apache Version:1.3.41 (Unix).

I don't have any issues when I upload with CuteFtp. I've tried other Web Servers and run into the same problem. Any ideas?

Quote:

---

Originally Posted by met0555

this code will let you upload a file on an ftp server. working on vb.net 2005
i hope it will help u

Upload via FTP Code:

' set up request...
        Dim clsRequest As System.Net.FtpWebRequest = _
            DirectCast(System.Net.WebRequest.Create("ftp://ftp.myserver.com/test.txt"), System.Net.FtpWebRequest)
        clsRequest.Credentials = New System.Net.NetworkCredential("myusername", "mypassword")
        clsRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile
 
        ' read in file...
        Dim bFile() As Byte = System.IO.File.ReadAllBytes("C:\Temp\test.txt")
 
        ' upload file...
        Dim clsStream As System.IO.Stream = _
            clsRequest.GetRequestStream()
        clsStream.Write(bFile, 0, bFile.Length)
        clsStream.Close()
        clsStream.Dispose()

Enjoy

---

try
clsRequest.UseBinary = false (default is true, False is for text)

Thanks for that, but I solved the problem by creating my text file using chr(10) instead of vbnewline. Must be something to do with ASCII character set.

nice post!! guyss

is there any way to upload image over internet via .net cf thru ftp??

Quote:

---

Originally Posted by eyeconeeyecone

nice post!! guyss

is there any way to upload image over internet via .net cf thru ftp??

---

Download the freeware code at www.aspDotNetSoftware.com for the application called FTP Backup. Within that source code, you can see how to upload files to a remote FTP server with ease. It even shows how to easily do it with multiple threads. You need to create an account before you can download, but it is WELL worth it. Trust me.

- Thanks
- John Johnson
- Sr. Software Engineer

How would you add in or increase buffer size to 2048?

this scripts works perfectly .. but what if i want to upload a second file without opening en closing the FTP connection?

Hello to all,

i used the above code and i am happy to inform you that it works. But i have a problem. I want to make an application that uploads screenshots of my desktop to my server via ftp.

This is the code i use:

Code:

---

Public Class Form1
    Dim SC As New ScreenShot.ScreenCapture
    Dim clsRequest As System.Net.FtpWebRequest = DirectCast(System.Net.WebRequest.Create("*"), System.Net.FtpWebRequest)
    Dim bFile() As Byte
    Dim clsStream As System.IO.Stream

    Public Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        clsRequest.Credentials = New System.Net.NetworkCredential("*", "*")
        clsRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        SC.CaptureScreenToFile("c:\desktop2.jpg", Imaging.ImageFormat.Jpeg)
        bFile = System.IO.File.ReadAllBytes("c:\desktop2.jpg")
        clsStream = clsRequest.GetRequestStream()
        clsStream.Write(bFile, 0, bFile.Length)
        clsStream.Close()
        clsStream.Dispose()
    End Sub
End Class

---

When i run the application and press button1 the image of my desktop is being saved to c:\desktop2.jpg and is being uploaded to the server. But when i click the button for second time (or third, or....) this error is produced at line "clsStream = clsRequest.GetRequestStream()":
"Cannot re-call BeginGetRequestStream/BeginGetResponse while a previous call is still in progress."

So i tried to make a modification and i put "clsStream = clsRequest.GetRequestStream()" out of the button1_Click() and paste it at form1_Load().

When i try to run this, it works for the first button1 click but at the second a new error comes at line "clsStream.Write(bFile, 0, bFile.Length)": Cannot access a disposed object.

So i decided to delete the two lines that close and dispose the object (clsStream.Close(), clsStream.Dispose()). I run this again, first click everything is right, second click no error produced but although the new desktop image is being saved to c:, the file i found to my server is the old one but (almost) double in size. If i press for third time the button, the local image is refreshed but the image on server is the old one but (almost) with triple size of the original.

What's the problem? I think that i want to do an easy job but i can't. Just press the button upload an image via ftp to server. Press again the button, upload an image to server and so on.

Thank in advance,
Thanasis

If trying this locally what gets entered in this part
DirectCast(System.Net.WebRequest.Create("ftp://ftp.myserver.com/test.txt"),

Hello guys,
I already known this feature, but I would like to know if there's any chance of encrypting the password, so if someone try to debug my code after it has been compiled, he cannot see the real FTP password.

Suggestions? :)

i get an error on this line(and I am using the code you posted):

vb Code:

Dim clsStream As System.IO.Stream = clsRequest.GetRequestStream()