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 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]...
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.
I'm pullling HTML data off a internal webpage using the .downloadstring method. Here is the code i'm using:
[Code]...
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 trying to make a program where when you click a button it will retrieve each value of certain things on a webpage. I.E; [URL] On that webpage it shows Clan,Kills,Etc. I want to make it to where a Label will Say "Kills:" And another label next to it will have the value of kills retrieved from that webpage, and each time the button is clicked the stats will update if they are changed..I think it's simple to do, but I don't know how..
View 2 Repliesok so I am trying to grab a bunch of phone numbers from my html page. I have successfully grabed the first one but I dont know how to get it to loop around and grab the next one and list them out into a listbox. here is the code I have for getting the first value, but how can I make it go in a loop. I have been searching for hours and trying tons of different kinds of loop code but get errors every time.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
WebBrowser1.Navigate("my html page")End SubPrivate Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click TextBox1.Text = WebBrowser1.Document.Body.InnerHtml()End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[Code]...
I'm currently grabbing HTML from my site using webrequest and storing it in a string. I'm looking to take this string, and scrape all of the prices in order to calculate this against my cost price (for a consistent profit spreadsheet). What is the most feasible way to do this? Would using a webbrowser control be a better idea?
View 1 RepliesI'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 use a downloadstring (instance.downloadstring) with instance as the'System.Net.WebClient'.
View 1 RepliesI'm working on adding a de-captcha into one of my programs but I can't seem to be able to grab the captcha from the web browser.I don't think I can just parse the URL and use webrequest to download it as it'll be a different string once it's reloaded.
View 1 RepliesI am trying to grab a small piece of information from imdb. Using Toy Story 3 at this link: [URL] It currently has a rating of 9.4. Now what I am trying to do is grab that 9.4/10. It is within the following html code.
[Code]...
I have a combo box with 20 items in it, i was wondering if it was possible to grab an item at random and display it, i'm not sure what code i would need
View 2 RepliesI have set my webBrowser a URL and I have searched for examples but they didn't work and just return a blank screen.[code]And others and I know how to get a screenshot but not a webBrowser screenshot.
View 2 RepliesI'm currently using the following to code to grab the installed programs and list them in a ListView:
vb.net
Dim SoftwareKey As String = "SOFTWAREMicrosoftWindowsCurrentVersionInstallerUserDataS-1-5-18Products"
Using rk As RegistryKey = Registry.LocalMachine.OpenSubKey(SoftwareKey)
For Each skName In rk.GetSubKeyNames
[Code] .....
What I don't understand is when I run the code, I get a NullReferenceException was Handled on this line:
vb.net
If name.ToString <> "" Then
I haven't been able to find much on the error. It seems like it is a pretty generic one and can fit into a lot of different scenarios.
okay so in webbrowser1 is there any way to grab text from it's textbox like say i go to google and type something in the textbox hit send can i grab the text from that textbox ?
View 5 RepliesI am writing my first application in Visual Basic Express 2008 and the program conistently hangs (Not responding in the Task Manager) midway through execution. The operating system is Windows XP Professional SP3 running on a 1.20 GHz Intel Core Duo CPU with 2 GB of RAM.
The application has very deep layers of subroutines and functions, all of which are using lots of math routines. There are no recursive routines anywhere in the program. The program creates and destroys quite a few class elements, and I have written dispose methods for all of them using IDisposable, setting all the properties to Nothing. I also use GC.Collect() to force garbide collection, and GC.WaitForPendingFinalizers(). As a result, I don't think there are any memory leaks.
I think the depth of sub and function calls are causing a stack overflow, but I'm not certain. I have tried without success to increase the stack allocation to 2 Mb using Editbin.exe after reading some forums, but nothing changed. I then searched my machine and did not find EDITBIN.EXE.When the program hangs up, the background of the forms on the screen turn to solid white and the controls are no longer visible.It looks like a window pops up but it disappears too quickly to read anything. If I view the task manager while the application is running it hangs immediately. I have not published it, I am still developing and running it out of the VB environment.The more complexity (sub and function calls) I add, the earlier the program hangs.
I'm using the following code to close a form (Inherits System.Windows.Forms.Form) but it sometimes hangs up at the Invoke() ...
Private Delegate Sub closeFormDelegate()
Private Sub closeForm()
If myForm.InvokeRequired Then
[code].....
The VB2K8 Express IDE is hanging intermittantly when I click on the form's Design tab. The tab's work area goes blank and a wait cursor appears. I can't switch tabs or do anything else within the IDE at this point. I have to go to the Task Manager, end the VB taskk, and restart the IDE. VB is at SP 1 with .NET 3.5. I have no third party add-ins or controls except for the Visual Basic Power Packs which aren't being used. At this point it is annoying and I haven't lost anything yet but it is happening more frequently over time.
View 4 RepliesI have detected a problem running my application under Vista 64 bits OS.
My application is developed using VB.NT 2008 and compiled as x86
I have a main form. In this form there is an option to open other form. TThis second form must return a few values to the main form. When the user click on this 2nd form, to return values, this form hangs up (2nd form hangs up)
But for what I could have known, it continues executing the rest of code that exists after to open form. I want to say that the form dialog (2nd form) is not closed (hangs up) but it the code continues being executed, because I have seen that inserts the data in the database.
The application not returns any error and any exception.
frmWaiting (form displayed when call thread)
This forms contains progressbar
main form
Dim ThreadVentas As System.Threading.Thread
[Code].....
I am trying to build my own website and realized that it would be a big help to also create my own vb program to enable me to embed tags with simple clicks of buttons. I am having trouble getting my vb code to be compatible with html code (I keep getting vb syntax errors).
Here is what I've tried:
<strong>'Inside of a button:Textbox1.text = "<html tag example></html tag example>"</strong>
For some reason, the Add New Item command on the Project Menu is hanging VB on my Vista based machine.but now, it hangs. By that I mean the the little circle cursor spins and spins and spins... This happens even when all I do is start VB, start and new project. and then try to add something, eg. another form, a class, anything except "existing item".
View 1 RepliesI 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"))
its 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 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]...
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]....
How 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]....
working 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.
This may sound really stupid but I have to ask cause I'm not finding this answer anywhere.I have an application where the user will need to sign up for a new user account on the website [URL]..However when I am using Firefox's plug-in Firebug to view html I am getting something totally different than when I just right click on the site and view the page source.
What I am trying to do is to get the captcha from the website and display it in a picturebox on the application so the user can view the captcha, solve the captcha and then the app post is back to the service for a response.
Here is the source that I am getting using Firefox's Firebug to inspect the element:
<td>
<input type="hidden" value="Oo3Jo1I8bgzK68agMqo3s79ZZib2OkbK" name="iden">
<img class="capimage" src="/captcha/Oo3Jo1I8bgzK68agMqo3s79ZZib2OkbK.png" alt="i wonder if these things even work">
</td>
[Code]...
Why would the two be showing me two different versions of the HTML?
And how would you be able to grab that source to view in a picturebox using webclient?
