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 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]...
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 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].....
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]...
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.
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 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 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]...
I 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 RepliesI 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 RepliesI have took a little research for the method to grab the html tag and input the textbox strings into the html page by using system.net.webclient and httpwebrequest, but I couldn't find the answer.o get the the method for system.net.webclient and httpwebrequest to grab the html page and input the strings into the php form?
View 4 RepliesWhen I use this code:
Dim dloadurl As Uri
Dim saveto As String
Public Sub dodownload()
Try
[code]....
I am scraping title of webpage. i am using webclient class to get its html source. the true title of webpage is this which apprear on browser "La rvolution" but when i extract it from html source using webclient class i get following string. "La rvolution du sourire juste"
I think its something related to string conversion. how to convert this "La rvolution du sourire juste" to "La rvolution"?
Following info on webpage might give you some clue which is content type. " <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />"
Need to connect & retrieve from SQL DB in aspx page using vbscript server side. I have an html page which I want to edit by adding information from a SQL database & display results on and in the html page (code below). Initially thought of using server side javascript but unsuccessful, can this be done using vbscript?
View 1 RepliesI would like to ask a question with SchDocVW Internet explorer control.I added the reference "Microsoft Internet Controls" forum. [code]Could anyone give a known-good working example of how SHDocVW can be used to retrieve HTML contents reliably using VB?
View 4 RepliesIn VB.NET 2005, what is the best way to retrieve and parse HTML data from a URL, a bit like a search engine crawler?I am building an app, where I need to parse a website, and collate data from it (the website uses some tags that I could pull out to get the appropriate bits of data). I want to be able to do this in a thread, and just update a DB with the data, and give the client app a status update of the progress.
View 6 RepliesHow would I generate a list of html element names from a website/document that is being displayed in WebBrowser1?
View 1 RepliesHow can I retrieve info from a HTML table like this :
[Code]...
I'm using the following code to retrieve a URL and then parse the HTML from the page:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStart.Click
Dim Temp As String, searchstr As String
[Code]....
I think my problem is that I don't exactly understand how I am supposed to start and end the parsing. I know that in my above code, the "meta" tag is the start and the chr(34), double quotes, is the ending.
When I modify my code, I have price line, which in th html ends with another character, the ">" sign. In the first code, the "content" tag doesn't end with another character, it just continues the line, which is easy and it works.
I've a HTML page and i need to pass some value to my aspx page.
Since the url got a maximum length 256, i need to use <param /> tag to help me pass values and also get values from aspx.
(the numbers of param is not fix)
I've been searching days for the example how to get this done.
Here is my problem: I need to store HTML in a MySQL database. Afterwards, I need to be able to retrieve the HTML and have it be valid HTML that a browser can render.
How can I store HTML in a MySQL database using .Net? How do I retrieve it afterwards? As this is the design phase, I can create the database any way that is needed.
I need to create a VB.net app that automatically reads a html table. It should connect to a web address (eg "[URL]") and read it. I'll be happy if I could just get the full HTML. I was able to use this code to get the HTML of a regular website:
Dim strReply As String = "NULL"
Dim objHttpRequest As HttpWebRequest
Dim objHttpResponse As HttpWebResponse
objHttpRequest = HttpWebRequest.Create("[URL]")
objHttpResponse = objHttpRequest.GetResponse
Dim objStrmReader As New StreamReader(objHttpResponse.GetResponseStream)
strReply = objStrmReader.ReadToEnd()
This code sample will give me the HTML for the website [URL]. However it will not work with the website I want (eg "[URL]"), because when you access it via regular browser it will popup a browser dialog asking for credentials (user / pass). So when I run the code above for it, I'll get the exception:
The remote server returned an error: (407) Proxy Authentication Required.
How do I set this up to use the credentials, before retrieving the HTML? This is actually my first web-related app.
How to retrieve the absolute coordinates of an HTML or CSS element from the webbrowser control using Visual Basic? I am using VB 2008 Express Edition. I would like to be able to display the control in my application and then using the HTML Document Object Model (I guess?!) get the X and Y coordinates (top, left, bottom, right) of a DIV or other HTML tag.
View 2 RepliesWhat I would like to do is to find a way to get the results from a HTML/Javascript script in a string, using VB 2010.To make it clean on a practical case, I would like to get, in my VB application, the results provided by the run of the following external script:The resulting string should be something like this :
"document.write('<'+'style type='text/css'>#TCGPHiLoContainer {width: 300px;font-family: Arial;}#TCGPHiLoTable {width: 300px;margin-bottom: 3px;}.TCGPHiLoHeader {font-size: 8pt;text-align: center;}.TCGPHiLoHigh {background-color: #D9FCD1;color: Black;font-weight:
[code].....
