Webclient Not Working?
Jul 12, 2010well its werid it worked once but then it just randomly stop i do havenamespace
Imports System.net
Imports System.IO
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Check If Webclient.DownloadData Is Working?
Feb 12, 2010How do you check if webclient.downloaddata is working? I mean what if the site you are trying to access suddenly turns down. How do you avoid getting an error? Below is an example
Dim webclient As New WebClient
Dim eIP As String
eIP =
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Webclient Not Working - Msgbox Is Not Showing Anything?
Dec 29, 2009[Code]...
i am not getting any errors either i am using Imports System.Net
WebClient.DownloadFile Not Working Consistently?
May 23, 2012I am trying to write a program to download an image at certain time intervals from a website based on a start time, end time and the time interval. I am trying to use 3 timers to accomplish this. I want to be able to kick the program off and leave it running until I stop it. My code seems to work fine if I set the time interval for something like 2 minutes, etc. and sit and watch it, but if I set it for an hour and leave it alone, it gives me almost sporadic results.
I set it to start at 10 pm last night and end at 5 am this morning with an interval of 1 hour. It downloaded an image at 10 pm, 11 pm, 12 am, 1 am, 2 am, and 3 am and then there were no images for 4 and 5 am. I have tried this multiple times with different time spans, and seem to get sporadic results. Any insight would be greatly appreciated. Here is my current code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If TextBox1.Text.Length = 0 Or cmbStartTime.Text.Length = 0 Or cmbEndTime.Text.Length = 0 Or TextBox2.Text.Length = 0 Then
MsgBox("You must select an image destination, start time and time increment.")
Else
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C# - WebClient.UploadFileAsync Not Working With Large File Uploads?
Apr 29, 2011I am uploading a file from a C# application to an ASP.Net website, both written by me so I have access to the code.But, it is working for a text file (1KB) but not for a MOV file (77MB).
In both cases, I am using UploadProgressChanged to get the progress. The TXT file goes to 100% while the MOV file goes only till 50%. When done, I only find the TXT file saved on the server but not the MOV file.
Why is this happening? How can I get it to work?
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WEBCLIENT Not Working - Not Get Text File From PHP/MYSQL Server - Invalid Username/Password Or No List Download Permission
Jun 1, 2012I do the same thing with URLdownloadtoFile: IT WORKS.Wih the WEBCLIENT part I just DO NOT GET the Text file from the PHP/MYSQL server: I only get message "Invalid Username/Password or no list download permission: ||"
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim urlStr1, urlStr2 As String
Dim fileToStoreStr, fileToStoreStr1, fileToStoreStr2 As String
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Get The WebClient To Use Cookies?
May 13, 2010I would like the VB.net WebClient to remember cookies.
I have searched and tried numerous overloads classes.
I want to login to a website via POST, then POST to another page and get its contents whilst still retaining my session.
Is this possible with VB.net without using WebBrowser control ?
I tried Chilkat.HTTP and it works, but I want to use .Net libraries.
Set Time Out For WebClient?
Mar 5, 2011I use
wb as webclient
wb.downloadstring(url)
Say 40 seconds have passed. I want wb to just give up. How to do so?
Webclient.DownloadStringAsync?
Jun 20, 2012as per usual i am a little confused. I know DownloadStringAsync runs on a threaded pool with a default min and max threads limit, but what confuses is how would i call DownloadStringAsync say for example ten times.Example.I have an array with 10 URLS. Surely i would not use a for each loop of the array index to pass the url address while each time calling DownloadStringAsync(New Uri("someArray(index)") surely we can pass say a range of items from the array and let DownloadStringAsync decide on the threaded pool how many to process each time?
View 6 RepliesCancelling Upload With WebClient?
Apr 4, 2012Using the following VB.Net simple code to upload files in FTP, a call to WebClient.CancelAsync() doesn't actually cancel the upload.Does someone know why, and what can be done about this?
Private Sub UploadProgressChanged(ByVal sender As Object, ByVal e As System.Net.UploadProgressChangedEventArgs)
'TO-DO: Why is pbar empty?
ProgressBar1.Value = e.ProgressPercentage
Label1.Text = e.BytesSent & " bytes sent"
End Sub
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Differences Between HttpWebRequest And WebClient?
Jun 9, 2010differences between HttpWebRequest and WebClient and why I should use either.
View 1 RepliesDownload Zip File From Web Using Webclient?
Nov 23, 2010I am trying to use system.net to download a zip from a website.I am using the following code .[code].....I am doing something wrong here.The zip file is getting downloaded but the size is not correct.How to know the size of the file I download and assign to my buffer .
View 1 RepliesDownloadFileCompleted (Webclient) Called Twice?
Sep 21, 2011I use webclient to download a file Async. Defined in the Globals.
Public WithEvents wbclient As New WebClient
Downloading File Using WebClient?
Aug 15, 2011I am trying to use WebClient to download a .zip file from my server. In debugging mode the code works perfectly, but when I deploy my software the file does not even begin to download.After my program checks to see if an update is available, it should download the .zip file from my web server via the following
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Error In Using WebClient.DownloadString In Asp.net
Mar 4, 2012I am using WebClient.DownloadString method in vb.netto convert asp.net page to string after that I send this string by email. by I got this error from the server The remote server returned an error: (500) Internal Server Error. Unfortunately, no more details about the error. what is the possible problem ? edit: error in the following line of code :
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Get Status Code From Webclient?
Aug 26, 2010I am using webclient class to post some data to a web form. I would like to get the response status code of the form submission. So far I've found out how to get the status code if there is a exception[code]...
Is there some way to get the status code when there is no exceptions thrown?[url]...
How To Retrieve A PDF Using WebBrowser Or WebClient
Nov 23, 2010I am trying to automate the daily retrieving of a web file using .NET.The file is a PDF located at an address similar to: url...and these are the headers of HTTP request registered for debug using IE.[code]Can you please suggest me a way to get it and save it locally using WebClient, WebBrowser or other VB.NET (Framework 4.0) components?
View 1 RepliesHTTP POST Using Webclient
Feb 3, 2010I have donsome programmng in the past but am just getting back into it.I am trying to post to the following webpage. I need to fill in the "upfile" box and submit.[code]I keep getting 501 not implimented errors. I have asked my mate Google and cant find anything.
View 3 RepliesMake DOM Objects And Webclient?
Feb 3, 2011I usually used dom object from mshtml library for stuff manipulation when I use webbrowser control.How would I do the same for webclient control. Can I? Can we create a dom object from a raw html string?
View 1 RepliesRetrieve Raw XML From URL Then WebClient Or HttpWebRequest?
May 26, 2010I am working on a Geocoding app where I put the address in the URL and retreive the XML. I need the complete XML response for this project. Is there any other class for downloading the XML from a website that may be faster than using WebClient or HttpWebRequest? Can the XMLReader be used to get the full XML without string manipulation and would that be faster and/or more efficient?
View 2 RepliesThreaded Webclient Still Slow?
Nov 24, 2008Here is my webclient class that I am using to check multiple web sites at the same time. I am threading the class so each thread is creating a new getHtml Class. It seems that it still is waiting on something, because it only returns about 2 pages per second, which is great, but I think it should return faster if they are truly running on separate threads.When i made a similar perl script it would return 50 pages in about 10 seconds so it was much faster than this webclient method, unfortunately I don't want a cli. Let me know what you think. I have tried setting the proxy to null, but that didn't do anything.
Class getHtml
Friend result
Public Sub GetPage(ByVal URL As String)
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Using The UploadFile Webclient Method?
Jun 3, 2010I am trying to use the UploadFile WebClient method to a HTTP server which is operating on a device, however when I do this from my code at the client end (a PC), the server crashes. If I upload the same file from my browser on the PC to the same device running the same server, it works just fine. When I track the code on the web server there appears to be a difference in the header which is sent to the server. It is a 'Post', however the filename doesn't seem to be there. Is there anyway of reading the data that the UploadFile method sends?
View 2 RepliesVS 2008 : Proxy In A WebClient?
Jun 4, 2009I am making a little program witch get information from the web. Now i got some complains from people who are behind proxys. So my question is: Is there a way to get the proxy settings from IE, and let the WebClient use them?
View 1 RepliesVS 2008 WebClient And Loop?
May 8, 2009I need help to optimize this
For x As Integer = 1 To Me.dtsCustomers.Tables(0).Rows.Count Try
'I SEND VALUES: NAME CUSTOMER AND HIS AMOUNT
Dim client As WebClient = New WebClient<br/>
client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)")
client.QueryString.Add("customer", Me.dtsCustomers.Tables(0).Rows (x).item("customer"))
client.QueryString.Add("amount", Me.dtsCustomers.Tables(0).Rows(x).item("amount"))
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VS 2010 Get The Innerhtml With Webclient?
Dec 8, 2009i got the function, but it only can get the outer html, any method or suggestion to get the innerhtml with webclient?
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WebClient Download / How To Detech Bad URL
Feb 27, 2012We recently started playing with a vb.net 2008 WebClient on a Windows 7/64 workstation to download files from a web site to the local machine.It works except that we cannot detect if the URL is invalid. It doesn't throw an error. If we use Async it does trigger the Download Complete event but there was no file since the URL was incorrect.Is there a way to detect an incorrect URL?I also noticed that the events does not give you either the URL or the file?
View 1 RepliesWebclient Pause/resume?
Apr 1, 2011ausing then resuming a webclient download in process?
View 1 RepliesWebClient Timed Out After 10 Minutes?
Mar 22, 2011I run a program with 20 threads getting data from web.
After about 10 minutes I keep getting operation timed out exception.
If I restart the program it works again for 10 minutes.
Looks like there is a memory leak or something.
Some says that webclient uses webrequest object somewhere. I do not see it in watch though.
WebClient.DownloadFile In Application?
Dec 21, 2011I have one problem with WebClient.DownloadFile
On asp.net server I have page with this code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
If Not String.IsNullOrEmpty(Me.Request.QueryString("Tool")) Then
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Webclient.DownloadFileAsync Not Downloading?
Dec 11, 2011I am trying to make a download manager for my program. But when I run this code it gives me the message box say "Download Started" but that is it. I do not get any file downloaded or progress bar change? Does anyone know why?Public Class frmDownloader
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
WebClient1.DownloadFileAsync(New Uri("https://s3.amazonaws.com/MinecraftDownload/launcher/Minecraft_Server.exe"), "C:hi.exe")
MsgBox("download started")
End Sub
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