Forms :: Javascript Callback To Webbrowser Control
Sep 15, 2009
I know how to InvokeScript so my VB form can call a javascript function in the Webbrowser document, but does anyoe know how to do it the other way round - ie javascript calling a vb function in the containing form? Why do I want to do this? Well I've got a table of telephone conversations. Some conversations are longer than others and they look silly in a grid with fixed row height. So I put them in an html document and display them in the webbrowser control. There's a hyperlink on each subject title, and I'd like the hyperlink to open an 'edit conversation' dialog box in my app.
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Sep 25, 2009
How to disable javascript in webbrowser control? How to do this in vb.net? Any registry should be changed?
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Jan 23, 2010
I am developing an Outlook 2007 VSTO application that works with a commercial website.Almost all of the app's interactions with the website are done using HttpRequest objects.One user scenario does require the app to open a browser to a specific page on the site, and that page requires a Post string to provide the results of a form submit.I am using the version of the WebBrowser control that ships with VS 2008, and specifically VB.Net.My code successfully goes to the first page, after which it navigates to the actual target page (once the first page is loaded).That works, too, but if I click on the desired link on the target page, a JavaScript error pops up, stating "'j.parentNode' is not an object", with a Code of 0.I do not have access t the commerical site's internals. The page and links in question, when accessed via IE or Firefox, work correctly without the JavaScript error. The page containing the link is using Flex.Is this a problem with the nWebBrowser control?
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Aug 24, 2010
i was able to set the name on the form on the page using.[code]ive found lots of ways to use the ID to select but nothing that will work with this javascript(i think it is)as there are no IDs, ive tried everything i could find.just to be clear, the is a webpage im loading into a vb.net 2010 app via the webbrowser control. im trying to change the selected index of the combobox in the webbrowser control to match what i have selected in a combobox control in the same application.
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Nov 27, 2010
An action that I'm trying to automatically complete on a web page requires me to click "Yes" on a JavaScript alert box. Obviously the entire process cannot be automated unless the program clicks "Yes" or "No" for the user. Is there any way that I can capture this alert box and click "Yes" programmatically?
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Jun 5, 2009
I am using a Webbrowser control to access the elements in an HTML page which contains a JavaScript link which when clicked, adds extra content to the page. This works fine in IE 7 and Firefox.I then want to access this extra content in my program. Having found the HTML element containing the link, I tried element.InvokeMember("click"). I have used this successfully with a submit-type link to login to the web site, but cannot get it to work with the JavaScript link. I also tried setting the focus to the link element and using SendKeys to send the ENTER key, but all to no avail. Nothing seems to happen. I don't see the extra content produced by the JavaScript, nor do I get an error.Here is an extract from the HTML, showing the relevant (I hope) code:
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Oct 21, 2009
If I use IE I can visit the website I want and click the 'Next' button and life is good. If I open that same website using the webBrowser control and click the 'Next button I get a javascript error message.I'm not doing anything in the code to manipulate the website. My goal, eventually, is to have some level of automation; but at this point, I get the javascript error and a pop-up and it screws everything else.
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Aug 2, 2010
The website loads the javascript file with <script src="url.js" type="text/javascript"></script> How would I be able to execute the functions I want?
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Jul 23, 2010
My VB.NET code is supposed to execute third party Javascript code in an attempt to fill in and submit a form. This process consists of five steps, and I have been able to submit the form when all the steps are kept separate (i.e. behind 5 separate consecutive button clicks). Now, what I'd like to have is one button to handle all the five steps.
The problem is that the form originally only appears after calling "webbrowser.Navigate" command, which apparently modifies the page's HTML code. I seem to be unable to detect when Javascript has finished loading the new HTML in order to fill and submit the form. I have tried a timer control to wait for a certain HTML element ID to appear, but in vain. [URL]
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Mar 1, 2010
I have a sample application, in which I am trying to load a text file in WebBrowser control. I have a html file through which I am calling Javascript function to open text file. But it is showing me error like; Cannot find 'file:///C:/temp/test%2520page.txt'. Make sure the path or Internet address is correct. File exist at this location and its name is; test page.txt. I am not getting what is happening.
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Oct 8, 2010
I have written a web usercontrol (ascx). Inside, there is a Panel that I want to show/hide on click of a hyperlink inside the usercontrol. Normally, this is easy just by doing something like this (the onclick attribute is added to the hyperlink on prerender):
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Mar 23, 2011
Situation: i've created several forms with a datagrid:formwithdatagrid1formwithdatagrid2formwithdatagrid3.... These datagrid can be filled manually or with a selection list. I've written this selection list a a new form (frmSelectionList), witch is called with a SQL instruction, now this selectionlist calls a funtion in formwithdatagrid1 to return the selected value. Question:How can the same selectionform being used for all datagridforms?
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Feb 1, 2010
I have a class with a mthod which does a a time consuming task. I know how to start the method in a separate thread using the Threading.Thread class. What I want to do is use callback so as to have the method report its result to another method when completed. I chose to use the asynchronous Begin/End call pattern.
My thoughts are:
Private Function BeginConnect(ByVal URl As String, ByVal callback As AsyncCallback, ByVal state As Object) As IAsyncResult
'Some Code
[Code].....
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Dec 29, 2010
I am writing a program that will search the hard drive for particular files. Once it's done, I'd like the results to display like a folder. For example: If I looked for log files in c: and c:Windows, I would want to put those files in a 'virtual directory' and be able to manipulate them -- as you would in Windows Explorer.
The only thing I can think of that is similar is the search companion, but this software must be compatible with Windows 7.
I know it is possible to display a real folder (i.e. c:windows) in the webbrowser control, but can you have your own virtual directory and only view files that you want in it?
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Sep 20, 2011
I am having one heck of an issue with a webbrowser control I am using. As part of my job, I am working on creating a tool to automate an older system that we still use. The part that is being automated is web-based, and the group running the automation does not have access to any automation tools like QTP. In order to give them something they can use, the idea was to build an application just for them. In this application, I have everything working perfectly, with the exception of the most important part: the entry of a policy number. The policy number goes into a textbox, and then the user presses a button. A part of the automation sequence involves the use of a timer.
If I manually navigate to the appropriate page and put the .SetAttribute statement in a button action on my form, it works perfectly fine. However, if I put the .SetAttribute statement anywhere that is being controlled by the timer ticking, it does not work.So, this works:
Private Sub btnTest_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnTest.Click
Me.wbPrestige.Document.Window.Frames("WORKSPACE").Document.GetElementById("policynumber").SetAttribute("value", "1234567")
End Sub
but this does not:
Private Sub timerLoad_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles timerLoad.Tick
Select Case currentStatus
Case Status.wait_for_retrieving
[code]....
As a note, I do not have the Select statement in the Tick action; I have it in its own little sub. However, since it functions the same way no matter where it is, and to save space, I combined everything here. Also, at the time of the timer firing and setting things into motion to enter the policy number, the page is already fully loaded, so I don't think it is an issue with that, though I could be wrong.
It does not throw an error. The "1234567" above is passed in as a string, and doing a watch on it at run-time does show that the value is actually in there. It just seems like the .SetAttribute is not registering on the textbox. I have tried a few things ranging from "what-if" all the way to "that-is-so-dumb-it-just-might-work." Nothing seems to do the trick. I have tried sleeping everything for a few seconds just to see if there was an issue there. I have tried issuing the .SetAttribute command a few times in a row thinking it just wasn't taking the first time. Since setting .Focus() didn't seem to work for it, I even went so far as using SendKeys to move focus to the textbox on one attempt and API calls for mouse clicks (to click inside of the textbox) on another attempt. As a last crazy attempt, I had the Select statement doing a .PerformClick on btnTest (which works if I navigate to the page manually).
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Jan 26, 2009
But why can't I figure out how to get one of any number of created WebBrowser controls to navigate to a website?I have a FORM a BUTTON and TWO TEXTBOX controls at design time. I run the program and it creates a random number of WEBBROWSER controls named WebBrowser1 to WebBrowser whatever.textbox1.text = a number, 1 - max number of created webbrowsers, determined in whatever way it is. but what if textbox1.text could equal 35, or 1, or whatever. HOW DO I REFERENCE IT'S ASSOCIATED WEBBROWSER CONTROL?!?!?I've spent a few hours researching this and I find page after page on creating controls, but I can't change the data of a control determined at run time, and I can't find how to anywhere.
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Jan 3, 2012
I am trying to access a browser control in one of my forms from a module but keep getting an error. I attached a screen capture showing the code and the error balloon. The subroutine is public, and I am addressing the browser correctly. If I copy that same code into the "Main" form, and it works perfectly.
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Mar 26, 2010
I need to automatically fill forms in a WebBrowser Control. There are TextBoxes and CheckBoxes. How can I automatically set their value programatically? Language: VB 2008?
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Jul 2, 2009
If a "web page" is more of a "Web App", meaning it is more of an "application" in a web browser, is it still possible to fill forms and stuff? I have come across a pretty huge hurdle in my fight for automation and it involves filling in a "service ticket" submission thing that is browser-based. I can view the source code of the page, but it doesn't look like normal HTML and the first screen of it has a username and password box, but there is no mention of either in the page's source code.
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Nov 26, 2009
I have a webbrowser control on a form and try to navigate to one specific site. It seems to me that the remote detects that call is from a desktop program and redirect it. Is it possible? and if it is how I can hide it.
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Nov 11, 2009
I cannot seem to successfully send the Enter key to a webbrowser control using .net. I can succesfully send postmessage Tab key and it tabs through the links and controls, but it does not click on the link when I send Enter key.The website I am opening has frames, and due to the cross frame scripting policies microsoft forced into the IE control , I cannot retrieve the links from the IFRAMES on the page. So my alternative thinking is to use Tab keys to get to the link and then press Enter.
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Mar 31, 2011
I am attempting to fill the zip code through on Target Mobile Find in Store and click the GO button. However the button does not have an ID when I look at the HTML. I am able to fill the zipcode text box using:
WebBrowser1.Document.GetElementById("zipcode").Inn erText = txtZip.Text
but I cannot figure out how to click the button. I've tried using sendkeys.send("{enter}") but that doesnt seem to do anything.How can I either send the enter key after filling the zipcode or click the button?
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May 17, 2010
I know the code to find the input boxes in question.. basically the html is like so HTML <input type="text" name="username" class="inputbox"> i know enough to use WebBrowser1.Document.Forms.GetElementsByName("username") to find the text box...but I need to know how to send the contents of say TextBox1.text to the form on the web page...i can't figure it out for crap...I just assume give up and use sendkeys to tab to the textbox even thought its 80% unreliable....
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Aug 31, 2009
I have tried function like htmldocment.setAttribute() and webbrowser.document.body.style="font-size:34px"
it's not always working, why?
for example
Dim a As HtmlElement
a = wb.Document.GetElementById("tableID")
a.SetAttribute("border", "3px")
[Code]....
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Nov 27, 2011
I have created a VB.NET project that includes WebBrowser control. The web browser control navigates to html page that embedes a flash movie. Everything works fine except that when I want to exit the fullscreen mode of the video by pressing (Esc) key, it doesn't exit. If I view the html page with any other browser (Internet Explorer, Firefox, ...) it works perfectly. You can download the project from the link below. The files are in the Debug folder.
Download Link: FlashinWebBrowser.rar - 4shared.com - online file sharing and storage - download
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Jan 17, 2011
When a WebBrowser controls loads and navigates to a page it strips out everything after the '?'
how to overcome this and pass the query string to the page?
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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)
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Apr 14, 2012
I can't seem to find a way to use the IE9 rendering engine in the WebBrowser control, instead of the IE7 rendering engine, using Visual Studio 2010 and Windows Forms.
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Nov 26, 2009
XP WEBBROWSER-CONTROL: brings up PDF embedded in webbrowser control, as desired.XP IE7: Behaves the same if you manually navigate to URL, as desired.VISTA WEBBROWSER-CONTROL: brings up PDF by separately launching Acrobat, won't embed in webbrowser control. Not desired.Vista IE7: embeds PDF properly if you navigate to same URL, as desired.I am using Acrobat 9, where there is a preference setting under Internet to bring up PDF embedded in browser -- works fine directly in IE7, but not in webbrowser control.
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Mar 13, 2010
I'm working on a pretty simple project, just a WebBrowser app which is tailored for Webmail. I'm working on an OWA portion, and OWA normally doesn't allow the textfields on the Login page to be auto-filled. Is there a way I can force this? Search through the OWA login page code, find the fields, then fill in the fields with preset/saved data?
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