I'm in a trouble trying to fix some problem.. I have a program with Webbrowser control inside it.
It automates crawling process from some website. The problem is that I cannot fix webbrowser after recent website changes.
They have changed page navigation on website. And when I do actions MANUALLY in webbrowser (in my app) it doesn't go to the next/previous page on website. It does nothing... Whereas it works properly in IE 7/8/9 (only scripting errors thrown this time).
So does it mean that Webbrowser is not fully similar to IE??
I'm sorry for not showing source codes here, I think it wouldn't help here. Which way should I go to troubleshoot it? Why page navigation is not working in Webbrowser control?
I tried to simply put Webbrowser on a Window Form in new project and tried to navigate page 2/3/../10 in the website catalog, but it simply changes page number and doesn't navigate to it...
EDIT: Website doesn't work propely even if I do actions manually in webbrowser using mouse clicks.. but works in IE.
EDIT2: I might be not clear in my question. The problem is that I cannot use website even Manually with mouseclicks via my Webbrowser control in app. It changes page number after I click on it, but it doesn't navigate to that page. It stays silent. I'm sure that AllowNavigation property is true. It worked just yesterday and stopped after website changes today... Please tell me which way should I go to troubleshoot it.. I thought that Webbrowser control acts the same way as Internet Explorer.. Any help from you highly appreciated! Thanks
EDIT3: Strange thing... i just loaded Extended Webbrowser and navigated to that website. Page navigation panel doesn't work there also.. Is it a bug on their side or some type of guard from crawlers? What do you think?
(http://www.codeproject.com/KB/cpp/ExtendedWebBrowser.aspx)
I'm sure this isn't the answer your want but using the webbrowser control to scrape websites is very painful to maintain.
Instead use the HttpWebRequest and HttpWebRepsonse objects to recreate the calls to the webserver.
You can use Fiddler (http://www.fiddler2.com/fiddler2) and your browser to record your web sessions and recreate them in code.
You can setup your webbrowser control to disable a number of features including navigation.
I.e. to disable nav in the C# WebBrowser control:
webBrowser1.AllowNavigation = false;
I'd double check that you're not doing anything like this.
I had the same issue with a certain web site that recently changed its format. It has to do with the version of IE used by the control.
Simply force the IE version used to the latest (in my case 9). Setting the appropriate registry item to 9999 for my application worked; see: Webbrowser control behaving different than IE
Related
Before I go down the rabbit hole which is over my head and I would like to avoid for now… Is there a simple way to see if an online .aspx webpage loaded in the web browser control? .html pages work fine using .DocumentCompleted for me but .aspx visually loads fine but never triggers the DocumentCompleted event. I saw some good articles that mention the need of creating separate 3 threads and etc… unlike in those articles I am not interacting with the web application (the user is) I just want to hide a few irrelevant DIV elements on the side off the page.
user9938 Thank you! Unfortunately, I cannot mark your comment as an answer so I will post it for others here.
webview2 worked amazingly. On aspx pages NavigationCompleted still did not work however I was able to achieve this with CoreWebView2_DOMContentLoaded
I am working on a project that involves using a WPF WebBrowser to load a form created using Bootstrap JS framework. However, it appears that parts of the form (specifically drop-down select options buttons) do not function within the WebBrowser, despite working normally in IE11. The form does not retain drop-down selected values (on submit, the default value is recorded) and on change commands (e.g. loading specified data) do not work. I have searched extensively but have not found a solution that works. Drop down menus on non-Bootstrap forms seem to work when loaded, but Bootstrap forms on any site I load in the WebBrowser seem to fail.
Steps I have taken already that have not resolved the issue:
I have changed the FEATURE_BROWSER_EMULATION registry keys (among other keys suggested online) to change the default IE of the WebBrowser to IE11, and I have tested to make sure this is working, but it does not resolve the issue.
I have checked drop down boxes on other websites within the WebBrowser, which seem to be working fine.
I have ensured JavaScript is functional within the WebBrowser interface.
I have checked that the website works in IE11 outside of the WebBrowser interface.
I have tried the WebBrowser in both a Window and within a Form
I appreciate any help!
i have the following URL that doesnt behave in the WPF WebBrowser control as expected. It basically loads only a youtube background image and then stops .. where as firefox/chrome etc. load the youtube view you get on tv-apps.
is there a way to make the WebBrowser load this in the same way?
https://www.youtube.com/tv#/browse-sets?c=UCZGYJFUizSax-yElQaFDp5Q&resume
i tried to parse the same page downloaded with a webclient.. but its also only loading an background page and i dont know how to continue from here.
thanks in advance for any hints
Wpf WebBrowser is a wrapper for IE. If you try to open the link you provided with IE (11 in my case) you can see that it won't work (not supported).
If you change the version of IE that your WebBrowser use (as i described here Script Error in webBrowser control WPF) you can see the not supported page.
You can try using something like https://bitbucket.org/geckofx/ or https://github.com/cefsharp/CefSharp
maybe it's quite easy question, but I haven't managed to find a solution. I'm using web browser only to display data, and don't want user to access shown webpage. I know that in win forms' webbrowser it's possible, but how can I achieve it using WPF control?
PS I don't want to lock browser action in the navigate event, as described here: How can I make a WPF WebBrowser read-only? , because this won't stop my user from running javascripts etc
PPS And I also don't want to disable js, because I want it to be used by webpages. What is more, I'm executing it from code, as long as navigating between sites
Add this to Windows_Loaded Event
webbrowser1.IsEnabled = false;
i'm using WebBrowser control in Windows Forms App to automate a website and do some actions, so i need to know the HTML elements in the website(for example, textbox id, button id).
Everything is running smooth until i meet one situation. There are a html link element which point back to itself (eg: "http://www.aaa.com") but trigger a new windows with different url (eg: "http://www.bbb.com"). Below is the html link element :
< a href="#" class="toolbar" id="Export_Link" onclick="showExportWindow();" title="Export me">Exports & Reports< /a>
It showed up a new window with different url and therefore, the WebBrowser control unable to get the HTML element in the new window because it trace back the html element in the old window ("http://www.aaa.com#") and not the new window ("http://www.bbb.com")
Please help me! I'm stucking here for 1 weeks already! Anyone know how to solve this problem?
I'm not sure if i understand your problem correctly, but it seems that you are struggling with the "#" link. It's a common practice to link to the external page, even if you want to use javascript to open this page. This provides a good fallback for browsers with disabled javascript support.
Other
Pay regard to the return false; at the end of the javascript, it's necessary to tell the browser that the "normal" page link shouldn't be followed when the javascript runs.