How can i set the Windows Forms webbrowser control to block or allow cookies for the site it will navigate?
You can implement a Custom Security Manager and return URLPOLICY_DISALLOW in pPolicy for each kind of action between URLACTION_NETWORK_MIN and URLACTION_NETWORK_MAX. There are several actions for cookies. For a list of cookie related actions, check your zone security settings in IE options.
There are multiple webbrowser controls in .Net. The WPF one isn't customizable for this task. The Windows Forms one is kinda customizable however its IDocHostUIhandler implementation is stuck in internal code due to security guidelines of .Net BCL. You would be much better off if you use the raw ActiveX or its wrappers that support this kind of customization, e.g. csexwb. If you have to use the winform webbrowser control, you need to create your own webbrowser site.
The webbrowser control IS internet explorer. If you want to do this you may have to open an instance of the browser and block cookies through internet options. The webbrowser control itself doesn't provide a nice handy way to do that. Also doing this will block cookies from any site and not for a particular site
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I was trying to make a pc application that helps people more conveniently when they are using a browser(e.g Chrome, Firefox, Edge ...)
For example, the application shows the default browser and let user can choose another browser as default if they want to, and the app shows all windows that are currently opened; Overmore, when the user clicks a specific window then app will focus the window.
user can select default browser
user can see all windows categorized by browser type
So, my initial planning was using Election js; however, I've found that there is no way to control a browser from the Electron application since Node js cannot access the users' system(this thinking could be wrong since I have poor English😥)
After some research, I'm guessing C# can do that by using windows api. I've saw this post that saying by using DDE, we can get tabs urls.
But I'm wondering if C# can fully control a browser; for instance, create a new window, notice if music or video is playing in the tab, request to browser for getting favorites list.
If it cannot, how about requesting api to the browser from pc application?
You cannot fully control a browser. Internet Explorer was the only browser that had a documented and supported API to control, inspect and automate. Internet Explorer is dead so this is a dead end. The basic DDE control interface is also outdated.
Accessing favorites and the content of open tabs is limited because evil people would use such APIs to inject and spy. If you want to access the favorites you will have to write custom code for each browser.
Using the accessibility and UI automation APIs is the only reliable and supported way of interacting with modern browsers. SetWinEventHook can be used to detect window creation and primitive state changes. MSAA/UI Automation needs to be used to get more information from each browser window.
The thumbnail API and/or magnifier API can be used to get the preview image.
To open a new tab, execute a new process with the URL on the command line. Some per-browser customization might be required (-new-tab parameter etc).
Use IApplicationAssociationRegistration::QueryCurrentDefault to detect the default browser.
I'm creating a web browser that has an automatic loading of specific web pages, but the problem is that the browser that i created using c# in visual studio wont load javascipt, the browser that i created only load html file, but don't support java script. can anyone help me on how to add some functionality on my custom web browser that will support javascript.
WebKit DotNet is the best port of WebKit powerful browser engine into DotNetFramework.
It has nice and easy tutorials and properties and methods to customize.
It has JavaScript activated by default.
http://webkitdotnet.sourceforge.net/ is the official website.
http://webkitdotnet.sourceforge.net/basics.php is where you can find the basic tutorial
Webbrowser control is really crappy. I'm assuming you're trying to scape some kind of website. For this use HttpWebRequest instead.
If you`re trying create your own webbrowser: don't, or use Webkit or Gecko instead.
In case you're using the webbrowser control you will have to enable JavaScript in your Internet Explorer settings, because the webbrowser control is the Internet Explorer or at least the engine of it. IE has local JavaScript disabled by default, so this could be your problem. As user #user3855678 said I would recommend using Webkit etc too.
We are trying to display HTML content, which requires an X509 Certificate, within a WPF Application that uses the System.Windows.Controls.WebBrowser.
Here is a simple example of the XAML.
<WebBrowser Source="https://server.com/Welcome.html" />
In the situation where there are two or more X509 certificates with KeyUsages == X509KeyUsageFlags.DigitalSignature the Browser Control prompts the user to select which certificate should be used. We would like to prevent this dialog from being displayed.
Through code we can tell which certificate should be used but we do not see way to send this information to the browser control. At first we were expecting that the WebBrowser would have a ClientCertificate or ClientCertificates property, like HttpWebRequest does, that we could use to set the Certificate but there does not seem to be any such property.
We realize that the WebBrowser control is really a Win32 control with a WPF wrapper so maybe there is an older Win32 API call that can be used to set the Certificate?
Other suggestions were to use a 3rd party library with a different web browser control. Before we try that approach we wanted to make sure there was no way to use the c# web browser control.
The webbrowser control calls the host's IHttpSecurity::OnSecurityProblem implementation to notify about ERROR_INTERNET_CLIENT_AUTH_CERT_NEEDED errors, however you have two obstacles here:
WPF does not really expose any extension point to let you add any webbrowser host interface to the ActiveX host. This can be circumvented by switching to the Windows Forms webbrowser control, or host the ActiveX directly and add your own IHttpSecurity implementation.
To select a certificate the WinInet way, you need to call InternetErrorDlg with the right HINTERNET handle. However the webbrowser control does not really expose any API to give you that WinInet handle.
I suggest you to find or write a programmable proxy to do this authentication at the proxy side, then use UrlMkSetSessionOption to use the proxy in your process. I am not sure FiddlerCore fits the bill, but you can give it a try.
I've got to write a .net windows forms application that will open a webpage and then be able to react to the user clicking on certain links on the webpage. The specification I've been given has the links on the webpage just being http links.
Is there a way for my .net application to have a minimal web server on it which will allow it to handle http requests on a given port?
Use an HttpListener.
http://msdn.microsoft.com/en-us/library/system.net.httplistener.aspx
If all you need is to show a webpage, and you don't have any restrictions on the browser used, then the WebBrowser control will do the trick.
Drag it on to your form
Set the Url property to the page you need to display
Attach to the Navigating event
You can now respond to clicks, cancel them, do whatever you like. If it's just responding to client-side clicks you need, you don't need a web server. If you DO need a webserver, WinForms shouldn't have anything to do with it.
webBrowser1.Navigating += new WebBrowserNavigatingEventHandler(webBrowser1_Navigating);
private void webBrowser1_Navigating(object sender,
WebBrowserNavigatingEventArgs e)
{
//Do your thing... maybe set e.Cancel if you don't to navigate
}
Please look at the WebBrowser control and specifically the "ObjectForScripting" property. If you set it to the parent form you can actually handle javascript events from the page loaded in the webbrowser in your c# code!!!
I hope that helps!
There are different ways to do this depending on what functionality you need. If all you need to do is respond to click events, and you don't need "full" http protocol support, you can just open a socket and parse what comes in from the browser.
Alternatively, you can use HttpListener, which takes care of the http protocol parsing for you and is relatively easy to use. For what I think you need, this is probably the preferred approach. Simple, non-compiling example here: https://gist.github.com/1770645.
The "holy grail" is hosting the ASP.NET runtime in your windows forms application. I've done this and it is pretty involved. The runtime has to be hosted in a separate AppDomain, so you end up jumping through a lot of hoops to get everything running and hooked up. It also involves writing an implementation of HttpWorkerRequest that is more full featured that the framework provided SimpleWorkerRequest. Incidentally, this also works for windows services, which gives you a great way to provide service management and monitoring through a browser without having a dependency on IIS.
I have interpreted the question differently to other users, so maybe I am way off but, I read it as he is trying to render web pages from the web and react to a user clicking on a link within the web page.
The only way I can think of doing this is by using some form of renderer ie webkit and hooking into that to intercept the clicks a user makes.
You can use Nancy
Site of project: https://www.codeproject.com/Articles/694907/Embed-a-web-server-in-a-windows-service
I am trying to migrate an .hta application to a C# executable. Of course, since it's an .hta the code is all HTML and Jscript, with calls to local ActiveX objects.
I created a C# executable project and am just using the WebBrowser control to display the HTML content. Simply renamed the .hta to an .html and took out the HTA declarations.
Everything works great, except that when I make calls to the ActiveX objects, I get a security popup warning of running an ActiveX control on the page.
I understand why this is happening since the WebBrowser control is essentially IE and uses the Internet Options security settings, but is there any way to get the WebBrowser control to bypass security popups, or a way to register the executable or DLLs as being trusted without having to change settings in Internet Options? Even a way to do on a deployment package would work as well.
WebBrowser is an instance of Internet Explorer, and inherits security settings from IE.
One way could be to change the security settings defined in IE.
The other way could be to add a Custom Security Manager by implementing IInternetSecurityManager interface.
The WebBrowser Control or MSHTML hosts could create a security manager (by implementing the IInternetSecurityManager interface) that handles the URL actions and policies that are important to the host. Other URL actions and policies would be passed to the default security manager so it could handle them appropriately. The IInternetSecurityMgrSite interface would be used to handle Windows-related information from the component so that the customized security manager could handle any user interface it required. -