CefSharp | Windows Forms ) bindings for the Chromium Embedded Framework
kandi X-RAY | CefSharp Summary
kandi X-RAY | CefSharp Summary
Got a quick question? Discussions here on GitHub is the preferred place to ask!. CefSharp lets you embed Chromium in .NET apps. It is a lightweight .NET wrapper around the Chromium Embedded Framework (CEF) by Marshall A. Greenblatt. About 30% of the bindings are written in C++/CLI with the majority of code here is C#. It can be used from C# or VB, or any other CLR language. 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. See Financial Support for more details.
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Trending Discussions on CefSharp
QUESTION
When using CEFSharp in Visual Studio C# as an Embedded WebBrowser you need in accordance with user reqirements Disabling Web Security Check as a solution with this code:
...ANSWER
Answered 2021-Jun-08 at 18:45For WebView2 you can use CoreWebView2EnvironmentOptions.AdditionalBrowserArguments to set command line parameters for the browser process. These are the same command line parameters that the Edge browser accepts which mostly matches the chromium command line switches including --disable-web-security
.
If you are using the WPF or WinForms WebView2 control it would be something like the following:
QUESTION
Tools used: Visual Studio 2019, Asp.net core 5.0, CefSharp.WinForms v79.0
I have created an asp.net core app and a CefSharp browser.
If i click on the app.core and then on the browser it works fine.
I would like to some kind "automate" the whole process.
How to start the Asp.net core app before the CefSharp fully loads/starts.
Can this be done from within the CefSharp browser,
so it opens the app.core in automatic and closes it too when CefSharp is closed?
i can already do this by cmd-line :
...ANSWER
Answered 2021-May-22 at 22:58You can start and stop process "C:\Server\APP.exe"
from within GUI.EXE
- this is assuming that you have a source code for GUI.EXE
You need to do the following in GUI.EXE
source code (here I'm assuming that you are using Windows Forms application):
- Add a Load event handler to your main form. From within your event handler you will need to start
"C:\Server\APP.exe"
. You can useSystem.Diagnostics.Process.Start(@"C:\Server\APP.exe");
within event handler to start a process. Note that this method will returnProcess
object which can be used to close the application. - Add a Closing event handler to your main form. From within your event handler you will need to stop
"C:\Server\APP.exe"
You can do this via CloseMainWindow method of the Process object.
QUESTION
I just developed an application like a web browser with the use of Cefsharp library in windows form application. My browser has got several tabs, but whenever user clicks on 'a link tags' with the property of _blank the application opens a new link in a separated window although I want to open links in a new tab in tab control instead.
what I used for my application:
C# windows form application
ChromiumWebBrowser class from Cefsharp library
I would be pleased if anyone can help.
...ANSWER
Answered 2021-Apr-26 at 06:43I've just looked through the documentation and found out the issue.
- you need to use the LifeSpanHandler class to interrupt the popup and disable opening new browsers by assigning newBrowser to 'null' then you'll be able to perform your instructions.
- If you want your windows open in self tab, just remove the comment in below code.
Here's what I've done for my problem:
QUESTION
Okay, here goes.
I am building a C# Winforms application on top of the CefSharp Winforms minimum example.
I have moved all of the code out of the main form's constructor and into a new method called Initialize(). So I instantiate and then call Initialize.
...ANSWER
Answered 2021-Apr-16 at 14:54The problem is most likely that the wrong form becomes the mainForm for the application. It seems like you intend ShellForm
to be the main form for the application, but you are displaying another form before this has been fully initialized. This is usually not a good idea.
You probably want to fully create your main form before displaying any other form to solve the problem. This might require rewriting to do a multi-step initialization, first load the shellform
, then ask for project, and finally do the final initialization of the shellForm
.
Another workaround could be to create a hidden form as the main-form. That way you could display your ProjectSelection-form before the shell-form.
QUESTION
I am creating a setup and check the pre-requirement option of Visual Studio 2019 - Setup Project. However, I could not find a VC++2015 pre-requirement.
But I am using CEFSHARP
and it is a requirement; I don't want to put people to install this manually, is there a way to add this as a requirement and automate the installation.
I don't know much about it; I don't even know how to actually say this: pre-requisites?
Also, the Visual Studio user interface is in Spanish; how do I change it to English?
...ANSWER
Answered 2021-Apr-13 at 17:44The actual version number for Visual Studio 2015 is 14. See the tag wiki for more information about VS version numbers.
So, to have your "setup.exe" pre-install the redistributables required by CefSharp, select the Visual C++ "14" Runtime Libraries (xxx) appropriate for your target platform(s).
Furthermore, since VS-2015, the C++ Redistributable Pack has been 'unified' to work with software compiled with multiple versions of the toolset: Thus, the Visual C++ "14" Runtime Libraries are suitable also for software built with VS-2017 (v. 15) and VS-2019 (v. 16). More info here.
QUESTION
how can I enable latest versions of CefSharp/Cef to utilize more of the available memory on a computer?
Here is a test case: I load an infinite page, like https://www.facebook.com/Google, then run a script that scrolls down the page, as I want to load as much as possible of that page.
With CefSharp/Cef 79 and earlier, I am able to scroll down to dates back in year 2010
With latest CefSharp/Cef the render process crashes when reaching some point in 2015
Here is the script:
...ANSWER
Answered 2021-Apr-07 at 14:10As it turned out, it was the introduction of the V8 Pointer compression (https://v8.dev/blog/pointer-compression) that is imposing the hard limit of 4GB JavaScript heap space and preventing the browser from loading very large pages.
When using the Chromium Embedded Framework, this can be solved by making a custom build with pointer compression turned off.
I did this by following the instructions at https://bitbucket.org/chromiumembedded/cef/wiki/MasterBuildQuickStart.md, and before running the build process, manually edited the file file chromium_git\chromium\src\v8\BUILD.gn and commented out the setting of the V8_COMPRESS_POINTERS flag.
The resulting libraries have the drawback of consuming significantly more memory, but the limit is gone, and when running on a machine with 32GB RAM or more, we can load those very large pages successfully.
QUESTION
We are moving from CefSharp to WebView2. Because of certain requirements, we are thinking of going ahead with the fixed version where the updates can be controlled by us. Now, on Microsoft's official distribution page we have 3 options available - x86, x64 and ARM64. We have users who use different combinations of OS and CPU architecture. One example is 32 bit Windows 10 Pro running on a 64 bit Intel processor. Here is where I am confused. Which one to ship to agents depending on their combinations of OS and CPU architecture. Can anybody help here? Here are the combinations -
I have not tried out and hence may be a blunt question - can x86 distributable be a safe bait for all these combinations? If yes, then what are the trade-offs?
...ANSWER
Answered 2021-Apr-06 at 08:19I think x86 distribution is safe. If 32-bit OS is running, the entire system acts as purely 32-bit. It's impossible to use any 64-bit piece of code, so 64-bit applications won't work. You can also check this thread: If you want to run 64-bit app on 32-bit OS, you have to install a VM or something. I think that's not what you want.
In conclusion, I think you should choose the WebView2 Fixed Version according to the OS version.
QUESTION
I have an Windows Form Application which utilises CefSharp. A while ago I used a chunk of code that saves the state of the browser such as login details etc so that the user does not have to log in multiple times.
This is the code I used:
...ANSWER
Answered 2021-Mar-25 at 14:15You must provide a full path.
non-absolute: "MyCachepath"
absolute: "C:\users\username\documents\MyCachepath"
why did it work in older projects?
Some project types and versions automaticallly translate an relative path into an absolute path like so:
environment.CurrentDirectory + @"\MyCachepath"
QUESTION
Hi i have wpf desktop application. I am using cefsharp.wpf chromium browser to open web page. I added cefsharp from nuget pacakge manager (version 87.1.132). it does work very well in my system (Windows 10, 64 bit os).
But when i run my exe in client's environment (windows 2012 r2,64 bit os), strange thing happens, which is browser doesn't load only when i try first time. basically i have a button & on button click i do open one window which has cefsharp chromium browser in it. so when window opens first time browser doesn't load anything. now if i close window and open it again browser will redirect to my url . only first time browser doesnt load. after first time it does load everytime until i close exe and try again.
if i close exe and open it again and try to open that window, again browser will not load anything. then i close that window and try again browser will work perfectly.
What i am doing is very simple i have browser in xaml file in one window, and in cs file when window is loaded i am assigning one address to browser and that's it.
in xaml
in xaml.cs on window loaded
browser.address = url;
// i am using www.xero.com login url (which i dont think should matter as it does work second time).
can anybody tell me what's happening here ?
I have debug.log file for cefsharp which says:
...ANSWER
Answered 2021-Mar-22 at 04:29This was very basic. I hadn't initialized Cef. As it was working without it second time. I did initialize it in App.xaml.cs when application is starting and now it does work fine everytime. Although i still wonder why it was working (if i load window second time without initializing Cef).
Here's what i added.
QUESTION
So my end goal is to detect when the user has pressed the left mouse button on a webpage (any element like a button, image and so on). With this I'd run some javascript to get the proper html data I need based on where the user has clicked.
Without taking it any further, I'm already stuck at the first part where my browser control doesn't seem to fire any events related to the mouse. However it does seem to provide handlers like MouseDown, MouseEnter, MouseClick and so on but doesn't seem to fire any of them.
I've tried setting up a simple WinForms test project with a textbox control and a button. The browser is added manually like so:
...ANSWER
Answered 2021-Mar-01 at 23:48It took a while, but finally got around to posting my own answer! Hopefully others will find this useful.
Thanks to @amaitland for pointing out in the comments that CefSharp browser will not fire any keyboard or Mouse events and also for posting this link which ultimately led me to my answer.
The workaround is to inject some Javascript (when the browser is done loading a frame) which will then listen to & detect any mouse/keyboard events. Upon fire, your Javascript then calls CefSharp.PostMessage(data);
which notifies the CefSharp browser on its own thread and returns any useful data
(depending on your script).
Adding browser.JavascriptMessageReceived += Browser_JavascriptMessageReceived;
& browser.FrameLoadEnd += Browser_FrameLoadEnd;
to your initialization will activate the necessary hooks, like so (following my original example):
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