String Convertion - Using Webclient Class To Get Its Html Source
Jul 8, 2009
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" />"
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Jul 8, 2009
i am scraping title of webpage. i am using webclient class to get its html source. the true title of webpage is this which appear on browser:
"La r�volution"
but when i extract it from html source using webclient class i get following string.
"La révolution du sourire juste"
i think its something related to string conversion. so any one help me how to convert this "La révolution du sourire juste" to "La r�volution"?
following info on webpage might give you some clue which is content type.
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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Nov 13, 2011
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.
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Nov 11, 2010
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]...
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Mar 1, 2009
i can parse html source code and regex a few things, but i know the exact phrase i'm looking for do i still need a regex if i know what i'm looking for?
if (string = logged) then
do the code if 'logged' is found in the html source
else
[code]....
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Jan 10, 2012
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?
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May 17, 2010
Trying to split a giant string that is the source of an HTML document after performing an httpget and read the lines into an array while removing empty lines. The following code does not work for me just puts the same string into the array at position (0) without splitting it.[code]...
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Aug 4, 2011
CDate("22/07/2010")
Conversion from string "26/07/2010" to type 'Date' is not valid.
What is wrong on this
It was working fine on older versions...!
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Dec 26, 2009
I have a problem of getting the string from the html class. When I debugged the project and I clicked the button, httprequest was connecting to the site then reading the pattern string from html class to get string, but it filled as a blank text.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Create a request for the URL.
Dim request As WebRequest = WebRequest.Create("[URL]")
' If required by the server, set the credentials.
[Code] .....
I an trying to work regards with the pattern string as "showChannel", which it doesn't filled the string from the html class. I want the pattern string to get the string from the html class such as like this:
<p class="showChannel">Name of program - Saturday 26th December, 22:30</p>
I want to get the time at the end of the pattern string which I want to fill time like this 22:30.
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Jan 6, 2011
Way to space out the source code of a web page, having each tag on one line, without having to search for each tag ending and then making a new line after.
My code for obtaining the source code is:
CODE:
Also if anyone knows a way to colour the tags.
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Dec 30, 2009
I am writing the code as on if statement that if the html class has strings called "<a id=""rowTitle1""(.*?)</a>" then do something. In what property that come after pattern that I could check the string whether if it valid or not??
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Feb 16, 2011
I am trying save a value from an input tag in some HTML source code. The tag looks like so:
<input name="user_status" value="3" />
I have the page source in a variable (pageSourceCode), and need to work out some regex to get the value (3 in this example). I have this so far: [Code] Which works fine most of the time, however this code is used to process source code from multiple sites (that use the same platform), and sometimes there are other attributes included in the input tag, or they are in a different order, eg:
<input class="someclass" type="hidden" value="3" name="user_status" />
I just dont understand regex enough to cope with these situations.
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Mar 12, 2012
i would like to know how i can get a page source code using vb.net webclient for windows phone 7.I found a C# example but i need a vb.net example.
C# (The code i found on internet)
public void GetFeed()
{
WebClient client = new WebClient();
[code]....
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Sep 26, 2010
I 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?
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Mar 13, 2011
When I use this code:
Dim dloadurl As Uri
Dim saveto As String
Public Sub dodownload()
Try
[code]....
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Oct 20, 2010
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.
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Jun 2, 2007
I'm writing an application in vb.net to download files from a remote server by ftp using WebClient Class
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Feb 9, 2009
I am writing a Windows Service to act as an internal Web image collector. I can thumbnail Web navigated to webpages using a webBrowser Control. But since a Service will not support a UI based Control like a WebBrowser control I have switched gears using the wrapper WebClient from system.net. So I am looking for a way to capture and thumbnail a Webpage.I can use the following to grab images off a web pager using webClient but cannot figure out how to thumbnail the entire page.
Dim imgBuffer() As Byte Using wclient As New WebClient() imgBuffer = wclient.DownloadData("http:// Webpage/Image") End Using
Using mem As New IO.MemoryStream(imgBuffer) Using img As Image = Image.FromStream(mem) Me.PictureBox1.Image = img.GetThumbnailImage(100, 100, Nothing, IntPtr.Zero) End Using End Using
End Sub
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Aug 7, 2009
I'm here again asking stupid questions. I don't have really get this but i ask again but i try explain all better. Here is a website link and i want catch string from here. Look page's source code and find first what starts <td> someword </td> I use this code for catch word from page. Visual Basic Express 2008
[Code]...
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Nov 10, 2010
I have two user controls that need to add a class atribute to the body tag of my page, however they currently over write one another if I just use Body.Attributes.Add("class","value") So I need to check if the class attribute exsists and if it already contains the value Im going to add.
If Not Body.Attributes("class").Contains("value") Then Body.Attributes.add("class", Body.Attributes("class") + " " + "value") End If
EDIT: The contain constraint doesnt return the expected value, resulting the the class not been concatinated, Example: add class "dog" then I a different instance of the same control tries to add "dog" but the contains("dog") returns false
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Nov 2, 2009
After four attempts, it needs to login to a legitimate account - and it can then logout and carry on searching for other sources.[code]...
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Nov 20, 2011
Using the Visual basic browser I would simply, at least for the input of information.
If WebBrowser1.Document.GetElementById("Input") Is Nothing Then
Else
Dim txt As HtmlElement = WebBrowser1.Document.GetElementById("Input")[code]....
But in the case of WebClient class, How do I do this ?As I have been told this is so much faster.
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Apr 16, 2011
How can I get the html source code of an open Internet Explorer web page?
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Oct 15, 2008
Basicly I'm downloading XML files with the Webclient class for processing and caching in a local database. There are three different categories of data, each contains 1 to n numbers of XML files. To retrieve the XML file I ask the server with following parameters in the URL:
[Code]...
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Mar 25, 2012
I have the below srtucture of html page
<video controls="controls" width="480" height="208" id="video1">
<source src="http://devfiles.myopera.com/articles/2642/sintel-trailer.ogv" type='video/ogg; codecs="theora, vorbis"'>
<source src="http://devfiles.myopera.com/articles/2642/sintel-trailer.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
</video>
Now I want to load video using OpenfileDialog and replace the filename with it's extension in place of src="http://"
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Oct 22, 2010
<div style="color: #000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size:12px; background-image: initial; background-attachment: initial; background-origin:
initial; background-clip: initial; background-color: #ffffff; margin: 8px;" mce_style="color:
#000000; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; background-
[code].....
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May 4, 2012
I am developing a program that gets the html source code of a certain webpages in a website.
I already developed one program that does so here's the code
Dim request As System.Net.HttpWebRequest = System.Net.HttpWebRequest.Create(TextBox2.Text)
Dim response As System.Net.HttpWebResponse = request.GetResponse()
[Code]....
Recently, I found out that I could do the same using Sockets. This time I want to parse HTML of those web pages SIMULTANEOUSLY. I tried parsing simultaneously on my previous program using multithreading but my bandwidth keeps decreasing as threads increase so, to make my questions short,
How can I parse many web pages' source SIMULTANEOUSLY without decreasing my Bandwidth? Does using Sockets in multi threading decrease Bandwidth? (If anyone tried)
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Jan 25, 2010
How do i get the full! HTML source of a web page, after it has run some JavaScript code which has made manipulations to the HTML source.
I'm using the WebbrowserControl of VB.Net, i'd like to create an extra function of my custom webbrowsercontrol which receives the full HTML source.
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May 22, 2011
How I can get a page source code with AxWebbrowser?
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Oct 24, 2009
How to get source/HTML code of the web page that is shown in WebBrowser1 when I click a button? I would like it to be written in Notepad or eventually in new form..
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