How to open a link in a native browser from CefSharp 3

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I have a requirement to open a link in a native browser from CefSharp 3. I need to run the whole application in CefSharp 3's chromium browser except a form. when I click the form's link button (Eg - Register button. It has a link to the registration form) I need to open this link in the native browser (Eg - Internet Explorer).

Can we achieve this in CefSharp?

I searched the google as well as stack overflow. But unable to find a solution.

Thanks in advance.

As suggested by holroy I have implemented the OnBeforeNavigation() method in the RequestHandler class in CefSharp.Example package.

This is the working code,

 bool IRequestHandler.OnBeforeBrowse(IWebBrowser browserControl,
 IBrowser browser, IFrame frame, IRequest request, bool isRedirect)
         {
             // If the url is Google open Default browser
             if (request.Url.Equals("http://google.com/"))
             {
                 // Open Google in Default browser 
                 System.Diagnostics.Process.Start("http://google.com/");
                 return true;
             }else
             {
                 // Url except Google open in CefSharp's Chromium browser
                 return false;
             }
         }

I hope this will help to some one else in future.

Thanks,

How to open a link in a native browser from CefSharp 3, I have a requirement to open a link in a native browser from CefSharp 3. I need to run the whole application in CefSharp 3's chromium browser  How to open a link in a native browser from CefSharp 3. c#,.net,wpf,cefsharp. As suggested by holroy I have implemented the OnBeforeNavigation() method in the RequestHandler class in CefSharp.Example package.

First you need to create a custom BrowserRequestHandler class such as this:

public class BrowserRequestHandler : IRequestHandler
{
    public bool OnBeforeBrowse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, bool isRedirect)
    {
        // Open in Default browser
        if (!request.Url.StartsWith("file:"))
        {
            System.Diagnostics.Process.Start(request.Url);
            return true;
        }
        return false;
    }

    public bool OnOpenUrlFromTab(IWebBrowser browserControl, IBrowser browser, IFrame frame, string targetUrl,
        WindowOpenDisposition targetDisposition, bool userGesture)
    {
        return false;
    }

    public bool OnCertificateError(IWebBrowser browserControl, IBrowser browser, CefErrorCode errorCode, string requestUrl,
        ISslInfo sslInfo, IRequestCallback callback)
    {
        callback.Dispose();
        return false;
    }

    public void OnPluginCrashed(IWebBrowser browserControl, IBrowser browser, string pluginPath)
    {
        throw new Exception("Plugin crashed!");
    }

    public CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request,
        IRequestCallback callback)
    {
        return CefReturnValue.Continue;
    }

    public bool GetAuthCredentials(IWebBrowser browserControl, IBrowser browser, IFrame frame, bool isProxy, string host, int port,
        string realm, string scheme, IAuthCallback callback)
    {
        callback.Dispose();
        return false;
    }

    public bool OnSelectClientCertificate(IWebBrowser browserControl, IBrowser browser, bool isProxy, string host, int port,
        X509Certificate2Collection certificates, ISelectClientCertificateCallback callback)
    {
        callback.Dispose();
        return false;
    }

    public void OnRenderProcessTerminated(IWebBrowser browserControl, IBrowser browser, CefTerminationStatus status)
    {
        throw new Exception("Browser render process is terminated!");
    }

    public bool OnQuotaRequest(IWebBrowser browserControl, IBrowser browser, string originUrl, long newSize,
        IRequestCallback callback)
    {
        callback.Dispose();
        return false;
    }

    public void OnResourceRedirect(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response,
        ref string newUrl)
    {
        var url = newUrl;
        newUrl = url;
    }

    public bool OnProtocolExecution(IWebBrowser browserControl, IBrowser browser, string url)
    {
        return url.StartsWith("mailto");
    }

    public void OnRenderViewReady(IWebBrowser browserControl, IBrowser browser)
    {

    }

    public bool OnResourceResponse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response)
    {
        return false;
    }

    public IResponseFilter GetResourceResponseFilter(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request,
        IResponse response)
    {
        return null;
    }

    public void OnResourceLoadComplete(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request,
        IResponse response, UrlRequestStatus status, long receivedContentLength)
    {

    }
}

The important part in this code is:

public bool OnBeforeBrowse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, bool isRedirect)
{
    // Open in Default browser
    if (!request.Url.StartsWith("file:"))
    {
        System.Diagnostics.Process.Start(request.Url);
        return true;
    }
    return false;
}

In my case, I was opening locally saved HTML files in CEF, and if those locally saved HTML files had external links, they would open up in the default browser.

Now that you created the custom BrowserRequestHandler, you need to assign it to the browser.

If you are using MVVM, you can create a BrowserRequestHandler in your model and assign it to the RequestHandlerdependency property of the browser control. But in my case there were timing issues as I had several browser instances in dynamically opening tabs and browsers were not opening fast enough and throwing errors.

So the second option is to set up a Loaded event using the interactivity namespace like this:

<wpf:ChromiumWebBrowser Address="{Binding Html, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" x:Name="ChromiumWebBrowser">
    <i:Interaction.Triggers>
        <i:EventTrigger EventName="Loaded">
            <i:InvokeCommandAction Command="{Binding BrowserLoadedCommand}"/>
        </i:EventTrigger>
    </i:Interaction.Triggers>
</wpf:ChromiumWebBrowser>

After this you can get the browser in your view model (or do this in a manager class), and set its RequestHandler to your custom BrowserRequestHandler like this:

browser.RequestHandler = new BrowserRequestHandler();

Option to Disable navigation of link to target window and open in , Is there any property or an event to disable opening of link in target window for Hyper link ? Option to Disable navigation of link to target window and open in default browser #1069. Closed. bharatdwarkani opened this issue on Jun 9, 2015 · 3 comments CefSharp is still a ways away from moving to a version of CEF that  I recently updated from CefSharp 1.25.7 to the most recent (39.0.0-pre02) in the hopes that it would be easier to detect when a link is clicked.In 1.25.7 there was a navigation type but that was very unreliable and even directly clicking links would just count as "other" instead of "link clicked".

CEF Forum • CEF 3 Open all link targets externally, CEF 3 Open all link targets externally e.g. "foo" opens the default external pdf reader with foo.pdf; "bar" displays the image "bar.jpg" you also have to message back to the browser host process to handle the open because  When I click on a link to open it opens in an internal dialogue that dialogue lacks some functionality like link of source and other browser functionality so I would like to disable that and open a link in an default or other web browser available in system.

I tried using a RequestHandler as suggested, however I found that while the link was opening correctly in a browser, the ChromiumWebBrowser was still opening an empty Chromium window. Instead of using the RequestHandler, I found that this could be more smoothly implemented using an ILifeSpanHandler - which allows me to catch the popup opening and redirect the process at that point.

Here is the code I used for the ILifeSpanHandler:

public class ChromiumLifeSpanHandler : ILifeSpanHandler
    {
        public bool DoClose(IWebBrowser chromiumWebBrowser, IBrowser browser)
        {
            return false;
        }

        public void OnAfterCreated(IWebBrowser chromiumWebBrowser, IBrowser browser)
        {

        }

        public void OnBeforeClose(IWebBrowser chromiumWebBrowser, IBrowser browser)
        {

        }

        public bool OnBeforePopup(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, string targetUrl, string targetFrameName, WindowOpenDisposition targetDisposition, bool userGesture, IPopupFeatures popupFeatures, IWindowInfo windowInfo, IBrowserSettings browserSettings, ref bool noJavascriptAccess, out IWebBrowser newBrowser)
        {
            newBrowser = null;
            System.Diagnostics.Process.Start(targetUrl);
            return true;
        }
    }

Here is how I implemented it in WPF (I just stuck it in a grid to have a place to show the static resource):

<Grid>
    <Grid.Resources>
        <local:ChromiumLifeSpanHandler x:Key="popupHandler"/>
    </Grid.Resources>
    <cef:ChromiumWebBrowser Address="{Binding TwitterFeedAddress}" 
                            LifeSpanHandler="{StaticResource popupHandler}"/>
</Grid>

URL Navigation Using CefSharp, The following url is an example or a url, which the Load method of ChromiumWebBrowser instance will not navigate to. (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36. nadiajoyce May 23, 2020, 5:59am #3 Chromium is open source, so it's possible another GitHub user might be able to help  After a succesfully installation, according to the version of CefSharp that you're using, you'll need to configure some things to make it work: A. CefSharp version 51 and newer. From CefSharp 51, you're able to work with CefSharp using AnyCPU, however it won't work alone, as you will need to make some changes in 2 specific files.

Correcting a small typeo in Chaya answer (which worked for me also). x:Key="" is missing the L.

<Grid>
    <Grid.Resources>
        <local:ChromiumLifeSpanHandler x:Key="popupHandler"/>
    </Grid.Resources>
    <cef:ChromiumWebBrowser Address="{Binding TwitterFeedAddress}" 
                            LifeSpanHandler="{StaticResource popupHandler}"/>
</Grid>

Browser will not load some urls - CefSharp, 15 Nov 2016 Using the CefSharp Chromium Web Browser in WPF / XAML. CEFSharp. How to open a link in a native browser from CefSharp 3. Xactimate​  How to open a link in a native browser from CefSharp 3 As suggested by holroy I have implemented the OnBeforeNavigation() method in the RequestHandler class in CefSharp.Example package. This is the working code, bool IRequestHandler.OnBeforeBrowse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, bool isRedirect) { // If the url is Google open Default browser

Cefsharp tutorial, CefSharp is an open source project which provides Embedded Chromium for . Refer the link below to do the same: Chrome High DPI: How To Enable It In to schedule tasks (javascript callbacks) with a native browser scheduler at three  I am creating a tabbed web browser using CefSharp 39.0.2. Right now, if the user clicks on a link on a website, it will open a new window that has none of my original UI. For example, when you click

Cefsharp enable javascript, The Chromium Embedded Framework (CEF) is an open-source software to make it the default so anytime you open a link, it goes to the browser you want. Page | 3 Click Apply and then Ok. If you cannot destroy the browser (imagine you​  CefSharp provides both WPF and WinForms web browser control implementations. CefSharp is BSD licensed, so it can be used in both proprietary and free/open source applications. For the full details, see the LICENSE file. If you like and use CefSharp please consider signing up for a small monthly donation, even $25 can help tremendously.

Cef Browser Settings, The Chromium Embedded Framework (CEF) is an open source project based on facilitating embedded browser use cases in third-party applications. Creating a light-weight native “shell” application that hosts a user interface static library that all applications using the CEF C++ API must link against. Integrate the CefSharp web browser component (based on Chromium) into your C# application. CefSharp is reliable, fast, fully open-source and does not need any extra dependencies to be installed by end users (except VC++ Runtime 2013). 1A. NuGet method – if you use NuGet, you can just grab CefSharp.WinForms from the NuGet repository.

Comments
  • Note: The function signature has changed. There's a bool userGesture before bool isRedirect now.
  • You can skip writing all but the OnBeforeBrowse() {...} method by deriving BrowserRequestHandler from DefaultRequestHandler. It will supply all the boilerplate
  • As OnBeforeNavigation executes in the renderer process, it's not exposed by CefSharp which uses a separate executable for the sub processes. OnBeforeBrowse is however, rest of the implementation detail is basically the same. github.com/cefsharp/CefSharp/blob/cefsharp/41/CefSharp/…
  • I've fixed the typo. Rather than posting an answer with a correction you can propose an edit see stackoverflow.com/help/editing