Read HTML Element In .NET 2008?
Feb 11, 2009
I'm trying to read an innerHTML string from an element on a webpage. I've loaded the page using the webbrowser browser class.
Here's the code in full
Imports System.Net
Imports System.IO
Imports System.Diagnostics
[Code]...
When I click button 1 for the first time I recieve the error "Object reference not set to an instance of an object." but when I click it the second time it returns the elements text perfectly.
I thought the wb.document element might not be instantiated so I've tried navigating to a page (google's homepage) before loading the page I want put with no success.
I also thought that maybe it wasn't giving the page time to load so I added the sub to deal with the documentCompleted event but this also returns nothing (though wb.document.url is set correctly to the webpage I want)
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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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Feb 5, 2011
HTML
<input type="text" id="id1" name="id1" value="myvalue" title="id1" >
How would I get "myvalue"? I've tried using .InnerText/.InnerHTML, but neither work. Instead of "myvalue" it will return "".
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May 17, 2009
I was looking at a previous post and the poster was talking about htmlelement, so what I want to know is if you can use this function to find a html element on a wb page.I'm trying to make a program that will find the img src url for an image on a website and then return that url to the imagelocation of a picturebox.
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May 18, 2010
Been searching all forums for an answer to this problems for several days now without success.I am trying to Cast/Bind to an HTML Element in an open Internet Explorer 8.0 browser.I need to Cast/Bind to a Frame with a name of "mainFrame".I can get to the Frameset ok but cannot get any further.[code]Can anybody shed any light on how to get HTMLDOC to bind the name part "mainFrame"
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Sep 8, 2010
How do I check if an HTML element exists? This element will only "show" on a certain event. ex: numbers in a non-number textbox or something. I tried
If WebBrowser1.Document.GetElementsByName("ElementName")
But that won't work, because the element "is in" the HTML, even though the page doesn't show it yet.
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Jul 10, 2011
i want to drag this html element when i click button [code]
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Sep 13, 2009
I need to know how to find the HTML element the mouse if hovering over such as a link so that I can open the link in a new tab, what would be an easy way of doing this?
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Mar 10, 2010
I'm looking for a way to do this check the currect html that in (webbrowser1) for this text
by <a href="/text/text" if it found then continue loop or do nothing if there is no match to do something
I'm not looking to find a href i need it to have find the same thing with "by" before the href
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Nov 20, 2009
[code]...
But there was no message. How would I get the value of an HTML element inside my webbrowser?
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Apr 12, 2012
HTML i have a program that gets google links (and there html code)how could i get all elements inside of that and take each one out so i can format them in a specific way.
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Oct 15, 2011
I need to click this button in vb. like click a button in webbrowser1 <input type="submit" name="ok" value="send" class="btn sbold slarger">I've scoured through the internet, but alas, i failed to look
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Sep 21, 2011
How would I generate a list of html element names from a website/document that is being displayed in WebBrowser1?
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May 1, 2011
I need a HTML element location (X and Y) in WebBrowser... Not the OffsetRectangle.Location one where you get a location coordinates inside parent element. I need a location coordinates inside the webbrowser...
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Jan 18, 2011
1. Some buttons have a site that I want to run them through my program (with button 1) through the following command:WebBrowser1.Document.GetElementById("ID").InvokeMember("click")I look at source code of the sites and see the button, the problem is I did not see the ID is always his, or it finds the Id, but does nothing, what's the problem with this?
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Aug 4, 2011
I want my webbrowser to scroll down to a html element called "submit"?
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Feb 13, 2010
I have a problem.I know how to do something with this:
Dim theElementCollection As HtmlElementCollection = WebBrowser1.Document.GetElementsByTagName("Input")
For Each curElement As HtmlEle
[code].....
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Jun 8, 2011
I am trying to figure out a way to to make a webbrowser scroll to an html element and center the element.
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Apr 3, 2008
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.
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Jun 7, 2012
auto click button in webbrowser this code
dy><tr>
<td class="t10L"><a href="javascript:apex.submit('GO');"><img src="/i/themes/theme_10_ar/button_left.gif" alt="" width="4" height="24"></a></td>
<td class="t10C"><a href="javascript:apex.submit('GO');">اضافة مادة</a></td>
<td class="t10R"><a href="javascript:apex.submit('GO');"><img src="/i/themes/theme_10_ar/button_right.gif" alt="" width="4" height="24"></a></td>
</tr>
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Jun 11, 2009
WHen we click on site whether left click or right....Control goes to IEDoc_MouseDown event,I just want to ask is that possible to know taht which element is clicked..Suppose we right click on link,is that possible to know it that link is clicked.[code]
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May 1, 2011
My students did a tutorial in HTML Help Workshop to add Help files to a VB 2008 Windows application. They zipped the files and uploaded them to our class web site.
I downloaded them at home, unzipped, and tried to check, but every one shows Table of Contents or Index and cannot find the .htm documents for the topic. The same thing happened in my office. However, these projects work correctly in our classroom
lab and do display the .htm files.
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Jun 11, 2011
How to add an html element like id="" to inside current html source created by webbrowser1.
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May 3, 2011
I have the following on my interface / webform: <div id="mydiv" class="forceHeight" runat="server" />
now I have a dondition in my code behind where if a certain situation is true I need to remove the forceHeight class from this control. I know in C# you can use:
mydiv.CssClass.Replace("forceHeight", ""); I'm not so sure how you do this using VB? Intellisense doesn't offer me this option?
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Nov 13, 2010
1. How do I exclude a string that is matched?
I have something like this:
You answered question 1 correctly. You have been awarded
<a href="url"> 1 point</a> .
You answered question 2 correctly. You have been awarded
<a href="url"> 1 point</a> .
You answered question 3 correctly. You have been awarded
<a href="url"> 1 point</a> .
You answered all 3 questions correctly! You have been awarded a total of
<a href="url"> 3 points</a> .
So basically I want to filter out all those in bold, it should look like this when printed to a textbox:
You answered question 1 correctly. You have been awarded 1 point.
You answered question 2 correctly. You have been awarded 1 point .
You answered question 3 correctly. You have been awarded 1 point.
You answered all 3 questions correctly! You have been awarded a total of 3 points.
2. How do I get a value of HTML span element? (I'm not sure how to phrase this but I think you will get it if I show a example..)
It goes something like this...
<span class="quiz1">Question 1:</span>
<span id="q1">Question Here </span>
I want text in bold to be displayed in a label. Do I use getAttributeByID here? How do I use it in VB.net?
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May 19, 2009
How can you find a specific HTML element in a webbrowser.document? I'm making a program that will go to a specified address on the internet and find a html element and get the src link from the element then return the src to the imagelocation of a picturebox. Is this at least possible?
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Jun 11, 2009
WHen we click on site whether left click or right....Control goes to IEDoc_MouseDown event,I just want to ask is that possible to know taht which element is clicked..Suppose we right click on link,is that possible to know it that link is clicked.
Public Class Form2
Dim WithEvents IEDoc As System.Windows.Forms.HtmlDocument
Private Sub Form2_Load(ByVal sender As Object, ByVal e As System.EventArgs)
[Code].....
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Dec 25, 2010
I'm using HtmlAgilityPack to parse HTML. I want to check if an element has a specific attribute. I want to check whether an <a> tag has the href attribute.
Dim doc As HtmlDocument = New HtmlDocument()
doc.Load(New StringReader(content))
Dim root As HtmlNode = doc.DocumentNode
Dim anchorTags As New List(Of String)
For Each link As HtmlNode In root.SelectNodes("//a")
If link.HasAttributes("href") Then doSomething() 'this doesn't work because hasAttributes only checks whether an element has attributes or not
Next
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Sep 12, 2010
I need to app to go through all the elements <div class="address"> and check the length of the text inside it. if its less than or equal to 2, then it needs to skip the following line and check the next <div class="address">Here is my code:
Dim content As String = ""
Dim web As New HtmlAgilityPack.HtmlWeb
Dim doc As New HtmlAgilityPack.HtmlDocument()
doc.Load(WebBrowser1.DocumentStream)
'this is where I need to check if text inside divclass="address" is <= 2
Dim hnc As HtmlAgilityPack.HtmlNodeCollection = doc.DocumentNode.SelectNodes("//div[@class='address']/preceding-sibling::h3[@class='listingTitleLine']")
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May 7, 2009
WHen we click on site whether left click or right....Control goes to IEDoc_MouseDown event,I just want to ask is that possible to know taht which element is clicked..Suppose we right click on link,is that possible to know it that link is clicked.
Public Class Form2
Dim WithEvents IEDoc As System.Windows.Forms.HtmlDocument
Private Sub Form2_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[code]....
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