Null Error In Browser Link Clicking Code
Sep 16, 2011
I'm trying to click a link in an embedded browser based on the link ID. However, I keep getting a NullReferenceException error. I have not declased anything from the code. Just dropped it in from another website. Any ideas?
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
For Each link As HtmlElement In WebBrowser1.Document.Links
If link.Id = "ctl00_mainContentArea_submissionFileListTable_ctl02_documentHyperLink" Then
WebBrowser1.Navigate(link.GetAttribute("href"))
[Code]...
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Feb 8, 2012
I have a link here that works perfect for calling the postback close that I need to happen:
<a href="javascript:parent.__doPostBack('Close','')"><asp:Label ID="Label5" runat="server" Text="Close Me"></asp:Label></a>
However, I would like to be able to call the *javascript:parent.__doPostBack('Close','')* method from the code-behind file rather than the user clicking the link. I.e., when I have completed my tasks in the application code, call parent.doPostBack as my last function call, which closes the window in question.
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Nov 12, 2010
I've been able to click buttons normally by [code]But I'm up against this class:button_link within a DIV which is giving me grief. It won't getelementbyId using send_button and it's not in a form.[code]So I'm looking for a way to click a button within the DIV.
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Aug 29, 2009
I'm new to visual basic & have learned many new things in such a short period of time from being on the MSDN forums. I have learned particularly in the subject of automating web browsing control using the getattributes etc., but I have tried everything that I have seen in the forums to auto click the "Settings" link in a created gmail account and then have the browser automate the "Forwarding" to another gmail address. I haven't found a solution anywhere to accomplish this.
So here is an account to try out in which this should only take a few mins to a veteran coder:
[Code]...
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May 31, 2010
Unable to cast object of type 'System.Windows.Forms.ToolStripButton' to type 'System.Windows.Forms.ToolStripMenuItem'.This is the error, when I click on the bookmark(When I add the bookmark, It's a non-clickable menu item; the next time i debug it, it becomes a clickable url(button)
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
...
Call minginimi()
End Sub
[code]....
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Jun 12, 2009
When a button is clicked i am creating HTML that will be displayed in the WebBrowser1 control. With this HTML are several links to other pages. Is it possible that when one of these links is clicked, that WebBrowser2 navigates to the page instead of WebBrowser1?
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Apr 26, 2010
I used the following code to click mouse on the specific co-ordinates on an open windows application
Private Declare Sub mouse_event Lib "user32" (ByVal dwFlags As Long, ByVal dx As Long, ByVal dy As Long, ByVal cButtons As Long, ByVal dwExtraInfo As Long)
Private Const MOUSEEVENTF_LEFTDOWN = &H2
[code].....
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Mar 4, 2012
I have link that uses a pop up window that I need to click. I can click the link to get the pop up window to be visible but in this pop-up window there is a link that I cannot figure out how to click automatically.This is what I get when I inspect the element in Firefox using the Firebug plug-in
<span id="modal-show-picture-trigger">
or your
<a onclick="$('#modal-show-picture').removeClass('hidden').hide().slideDown(); $('#modal-
[code]....
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Oct 19, 2009
The code below is used to check if the application setting, an arraylist is populated or not via the count method.
When running the program fails with error "NullReferenceException was unhandled" as initially the setting (arraylist) will contain no values.In similar circumstances I would declare a new instance of the object or set value to string.empty or check if DBNull.
I know application settings have a save method but to reference/load them one is not needed.I also left the value field in the projects -> settings to be empty.[code]...
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Apr 22, 2010
i've been trying and trying to click this link use vb 2008 but cant figure it out!
Heres the HTML/Javascript
<a onclick="add_friend('ImTrollin'); return false;" href="#">Add as Friend</a>
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Aug 14, 2010
I want to create a program that when the user clicks button1 it will press a button on a specific webpage.I've done what I want it to do but I have a problem. Before it can get to the page I want a button to be clicked on it has to Agree to some rules, I want to create some code that will click this button when button2 on my form is clicked.I can't seem to find the button ID since there is none so am not sure on what to do.
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Feb 28, 2012
i am trying to click the following link but its not working
<a class="defaultTableButton" id="ADRS_MENU" href="javascript:wsMenu_jumpUrl('../../address/adrsList.cgi',000)" style="text-decoration: none;">Address Book</a>
also
<img id="loginBtn" align="absmiddle" width="27" height="20" border="0" title="" alt="" src="/images/headerBtnLogOn.gif" name="loginBtn">
<span class
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Jan 14, 2011
I need to click on link in a table whose id is generated dynamically. I want to click on a link based on a text in some other column in the same row. Tried the following code but unsuccessful
selenium.GetValue("//table[@id=TableID]/tbody/tr[td/a/text()='Testing']")
Also trying with the following code
Selenium.click("xpath=id(TableID)/tbody/tr[td/text()='Testing']//input [@value='Delete']")
[code].....
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May 1, 2012
First, let me clarify that the links call on javascript/jquery functions. The href="#" for ALL links and can not/will not be changed (it's not even my website that I'm grabbing it from). There is no name or id for the <a> tags, so I'll be needing to InvokeMember("click") on the link based on the text that is between the <a></a> tags.
For example:
<a staticrndstuff="stone" customrndstuff="waffles" href="#">TextForTheLink</a>
I've tried every method I could find on google and even consulted /g/ to no avail. The 'staticrndstuff' is the same for all links, but the 'customrndstuff' is unique to specific text/links. Usually, for something with an id you can simply use WebBrowser1.document.GetElementById("ElementID").InvokeMember("click"),
But how can I have a vb.net forms application click a link on a webpage based on the text between the <a></a> tags or on the static/customrndstuff?
This is the hardest thing I've encountered, which is a bit sad for me.
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Feb 16, 2010
I have an website that has a datagrid that is pulling information from an SQL database. The user then clicks a link from that grid and is redirected to another page. My question is if a user clicks the first link and is redirected and then a second user clicks the link is there a way to stop that second user from being redirected or sent back to the first page after they click the link? So it would have to somehow detect on the second page that a second user has clicked the same link. Hope this is clear. This is being programmed in VS 2008 vb.net and SQL 2008
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Mar 13, 2010
I want to click on an Email link on This Disposable Email Website Lets say the email's title is "Email 1".How would I get my program to click on it?
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Jan 15, 2011
I can now navigate to pages, fill forms, submit forms, click elements etc.My next big step will be collecting html element ID's which are constantly different each time I navigate to a page.On the webpage I am working on, each page contains 10 of these ID's.
ill_btn_20234518
ill_btn_20534538
ill_btn_20174048
Now I am just looking to click on one of them at random for right now. It doesn't matter which one. Or perhaps the first one to appear on the webpage.Here is the code that I tried first........it works fine for clicking static buttons (without the random id #'s at the end)
Dim ill As HtmlElement = WebBrowser1.Document.GetElementById("ill_btn_")
ill.InvokeMember("click")
End Sub
I guess what I am looking for here is some sort of partial id tag, to let it know to search for the first ID that begins with ill_btn_ ?
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Nov 29, 2011
I am developing a small software to load an excel file to a website and then create a .kmz file. I have coded up to the file creating point.Now I need some help with the file downloading.The file is something like this "1322559442-10125-61.245.172.28.kmz"And the href value is "/display/1322559442-10125-61.245.172.28.kmz"This is for one file.The next time you upload an excel file to the program you get a different href value.So I want to create a code which can download the first href with the extension
[Code]...
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May 25, 2012
How can i click button in : [URL] the button that creates an account, tried almost everything :S also the button does not seem to have an ID
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Jan 24, 2012
How can i click button the button that creates an account, tried almost everything :Salso the button does not seem to have an ID
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Mar 6, 2012
I want to open the url in new tab when clicking on the link button that is generated dynamically in grid view.
I am using VB.response.redirect(url as string) opens the url in same window. what should i write in on click event?
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Jun 9, 2010
i keep getting this error in my project for my webrowsers im making for my sister but i cant find anything that works with it
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Jun 22, 2011
like this code: WebBrowser1.Document.GetElementById("ID").InvokeMember("click")
[Code]...
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Dec 1, 2009
How to make your VB program run by a browser link
like steam(steam://) and tsvn(tsvn
Also I want to get some parameters from the link.
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Mar 7, 2012
What code can I use for displaying the current link (string) of a web browser in a text box when I click a button?
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Dec 6, 2011
I have made a tabbed web browser in vs 2008 using vb.net. My problem is when i click on a link to open it in a new tab, the option "open link in a new tab comes disabled"
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May 30, 2009
How do I detect when a link is clicked in my browser, and then if it has a .wmv ending, execute a command to play it with my built in Media Player?The only code I need is to find when a link is clicked, and what the target url of the link is.
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Mar 19, 2010
I have a working Visual Basic application. I wish to have a html page that displays how to use it. How do I link it into a web browser control? This will be published and can't be just typing in the directory name as it may not exist on the client computer. How do I get it to look for the file in my solution explorer? I am using WPF in visual basic 2008 EXPRESS.
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Jul 31, 2009
I'm trying to make a web browser that will open up a link similar to this:
http://someweirdwebsite.com/LRHIT.asp?SNAM=x1namex&GNAM=x2namex&DT1=&DT2=&submit=Inquire&FMT=PDF&FLAGS=NJ%2C&INQ=LOL&PRD=1995+FORWARD
Here is a pic of the browser:
http://i31.tinypic.com/2my3qzq.jpg
My problem is this: As you can see from the image, Those two boxes will be where the user will enter in a first and last name, and that will be added into the address where x1namex and x2namex are. How can I make Visual Basic make the url and then immediately show it on the web browser (shown to the right of the two input boxes.)?
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Nov 30, 2009
Does someone know how to make your VB program run by a browser link[url]....
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