I 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 :
[Code]...
I 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 ?
error in the following line of code :
Dim str As String = client.DownloadString(Request.Url.GetLeftPart(UriPartial.Authority) + "/GFOPortalA/isd/ViewForm.aspx?ISD_FRM_NO=" + Session("ISD_ReqId"))
I've been testing using WebClient.DownloadString and sometimes I encounter an error: "The remote server returned an error: (403) Forbidden". It is based upon which url I use. For instance, this works:
Dim wc As New Net.WebClientDim strResult As String = String.Empty
Try
strResult = wc.DownloadString("http:/ Obama pages always fails.
[code].....
I have the following code that I'm trying to retrieve the HTML document. Not sure why it wouldn't work. Here's what I captured from Live HTTP Headers:
[Code]...
How can I integrate a ProgressBar in this code? It takes normally some seconds (9-10), but my program looks like a "crash", for this reason i want use a ProgressBar
[Code]...
I'm working on a project that scrapes data from government websites. I've noticed that whenever I use WebClient it doesn't always get the whole HTML code. Even when I get the robots.txt file it doesn't return everything. For example, http://www.bbc.co.uk/robots.txt has 80 lines but I'm only getting 13 lines.
If an HTML block uses "display: none" in the style I can't get anything between the hidden HTML blocks.Here is the sample code I'm using:[code]...
Well i want to add a listview item to the paramater of a Webclient DownloadString here is what i want
vb
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Dim wClient As New WebClient AddHandler wClient.DownloadProgressChanged, AddressOf DownloadProgressChanged(ListView1.Items(textbox1.text)'HAVE THIS IN HERE' AddHandler wClient.DownloadStringCompleted, AddressOf DownloadStringCompleted(ListView1.Items(textbox1.text)'Have THIS IN
[code]....
I use a downloadstring (instance.downloadstring) with instance as the'System.Net.WebClient'.
View 1 Repliesworking in an intranet sit .downloadString took less than one second,but some times the server is down (maitenance or so on) and the the result took maybe one minute or so.Is there any way to set an lower interval?for example, if the server doesn't respond in 9 seconds return empty string, or so on.
I've read some about async comm but not sure what is the best solution.
why the code below fails to retrieve the html
Dim WebReqeust As WebClient = New WebClient
Dim URL as string = "http://www.professionalorganizervannuys.com"
Dim WebPage As String = WebReqeust.DownloadString(URL)
It fails on this particular URL.
When I go to webcrawler.com and search for something, then look at the source code, a chunk of HTML similar to this displays the search results:
<div id="webResults">
<div class="searchResult webResult">
<a class="resultTitle" data-icl-coi="540" data-icl-cop="results-main" href=[website] target="_blank">[title]</a>
[code]....
But when I use WebClient.DownloadString to read the source code to a textbox, I only get this:
<div id="webResults">
</div>
There's nothing. All of the webresults have been removed.How come I can view the code in my internet browser but not on my application?? I even used an InStr method to confirm that the results weren't contained in the generated code.
I'm getting a string response from a server using a simple call of the Webclient.DownloadString() method, the returned string is something like this:
"snakeu003Cbu003E eyesu003C/bu003E"
how can I convert that in whatever those codes means?
I'm automating downloads. I was getting this error quite a bit using Webbrowser to navigate to a PDF (various PDFs at various websites). In other words the PDF was already on display in the browser when I called WebClient.DownloadToFile. I got a LOT better results when I desisted from WebClient and switched to this API (just pass in the two strings along with zeroes for the other parameters).
[Code]...
And yet Webclient seems oriented for only two entries (username and password). How do you set up the credentials for three entries? I hate to abandon WebClient, but at this point I just don't know how to make it work.
Quote:
System.Exception: Transaction (Process ID xx) was deadlocked on lock resources with another process and has been chosen as the deadlock victim.
I suspect this
Dim webc As New WebClient
webc.DownloadFile(remotexml, targetxml)
webc.Dispose()
Then i am using the targetxml right after that:
Dim xmldoc As New XmlDocument
xmldoc.Load(targetxml)
etc.
It seems that xml file is locked by the first process (WebClient).
I'm trying to download a simple text file from a web server. It's easily accessible from the web browser and I can download it from the web browser. However, whenever I use a WebClient to download the file, I get a 403 Access Forbidden Error! I'm not sure what I'm supposed to do. I haven't come across this kind of error in programming before and I'm not sure what I'm supposed to do to get around it.
View 2 RepliesMy program takes user input, replaces all spaces with "+", then inserts it into a search url for a specified web host. For example, the user enters:"How long is a foot?"
The generated URL (in this case I'm using dogpile.com) is:
"http://www.dogpile.com/info.dogpl/search/web?&q=How+long+is+a+foot"
This method has worked before for me, but now I just get an Internal Server Error every time the code is executed.
I've managed to narrow down my issue to a simple annoyance. I had a Webbrowser control mostly coded to navigate around an Oracle CRM On Demand site to generate metric reports, but then realized when I tried to build in the auto-download part, that the Webbrowser object wasn't going to give me the behind-the-scenes control I wanted. Searching online, it seems the Webclient control might be a better route. However I'm stuck trying to get by the login page so I can use the Download-File method to get my generated xls report. [Code] But every reply from the server has "Sign In Error: Both a user sign in ID and a password must be given." which tells me the form/post data isn't getting where it needs to go (It thinks the form is blank at [Code].
The above username and password are bogus of course, but once I can get a different reply then 'the fields are blank' I can worry about correct logon information. I'm just not sure what I'm not doing correctly or if I need to include something else. Since it's a publicly accessible site and I'm stuck getting something in the form to be 'seen', it should be easy for others to try and test.
I am getting an error with this Dim Web As New WebClient Web.Proxy = "69.196.16.237:62159" It says runtime errors may occur when converting string to System.Net.IWebProxy What does that mean?
View 9 Repliesits been a while since i've posted on the board..Well i got a problem and i stuck and i thought its time to use your knowledge.I want to make a program that its base code will do an automatic login to some of my sites i use and download the page raw source code to work with the results.
View 2 RepliesHow limited time for method InstWebClient.DownloadString(PageAddress)?Sometimes my apps "stop executing" in line where execute InstWebClient.DownloadString method.
IDE: Visual Studio 2010
Language: Visual Basic .Net
Library: .Net Framework 4
Code:
Private Function DownloadPage(ByVal PageAddress As String)
Dim InstWebClient As New WebClient
Dim PageContent As String
[code]....
I'm trying to parse the current song off a shoutcast stream admin page put my app just hangs at that line.
VBCODE
Using wc As New Net.WebClient
MessageBox.Show(wc.DownloadString("http://66.90.121.11:10013"))
[code].....
I'm pullling HTML data off a internal webpage using the .downloadstring method. Here is the code i'm using:
[Code]...
I 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.
I use
wb as webclient
wb.downloadstring(url)
Say 40 seconds have passed. I want wb to just give up. How to do so?
well its werid it worked once but then it just randomly stop i do havenamespace
Imports System.net
Imports System.IO
[code].....
as 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 RepliesUsing 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
[Code]...
differences between HttpWebRequest and WebClient and why I should use either.
View 1 RepliesI 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 RepliesI use webclient to download a file Async. Defined in the Globals.
Public WithEvents wbclient As New WebClient