I've built a webbrowser using C# with the webbrowser control.
However every time a page is loaded which contains flash content the application will give an error on exit.
It states that the application may not have worked properly and flash.ocx is missing.
If users don't have flash player it's okay to not load the flash elements.
So the actual question i have is: Is it possible for me to hide/cancel/prevent this error?
You will need to extend the Webbrowser control class.
Perfect article, that helps you blocking these errors, preventing these errors and editing these errors:
http://www.codeproject.com/Articles/13598/Extended-NET-2-0-WebBrowser-Control
Related
My WinForms project involves a C# web browser control - and I am getting the dreaded scripting error (like this image, different error though) when I visit different webpages:
I have read, and done, all the stuff about updating the browser emulation mode from IE7 to IE9 (or 11) in the windows registry (a la this stuff Use latest version of Internet Explorer in the webbrowser control) and the error still persists.
Now this is really frustrating due to the fact the the web page I am visiting works fine in IE itself, it is just my embedded one that has the error.
In desperation, I renamed my generated exe file "iexplore.exe" and bingo, the app works, with no scripting errors.
So this tells me there must be other settings in the registry or somewhere that cause this error, if anyone knows what these are I'd be most grateful if you could share them please!
N.B. I don't want to suppress the errors, I want to run the script.
Set the WebBrowser.ScriptErrorsSuppressed property to true disable the alerts for errors. Documentation here.
You can also change the IE version used by your WebBrowser as seen here, though I recommend doing this in the installer as editing the registry requires admin permissions.
I would also recommend navigating to http://detectmybrowser.com/ from your WinForms browser to make sure that the changes you made to your registry are correct.
I'm trying to run an webpage inside a Webbrowser control wich contains a connection to an Websocket. The control can't connect to the Websocket.
When I tested in IE, everything runs ok, but in the Webbrowser control inside Visual Studio, the page can't connect to the Websocket.
I tried other pages that contains script to detect browser support for Websockets, when it runs in IE, the page show that Websocket runs with success, but when I'm try to run the same page on Webbrowser control, the page says that webcontrol can't run. How can I do to solve this problem?
Very thank you.
The problem is that the webbrowser control, while using the local IE as a basis, is more locked down (or maybe better to say "differently configured") by default.
The ability to control this is called Feature Control and you can read about it on MSDN here
In terms of solving your actual problems, a similar question has been solved with code provided in this answer to an equivalent question on C#. Note the tweaks in the subsequent answer as well.
I have a C# application which uses a System.Windows.Forms.WebBrowser.
The problem is: i'd like the user to navigate smoothly in my application, without prompts, without javascript windows popping up, without security prompts. Even if this requires some contents to be unavailable.
I just want to have one window (always one window, if a receive a new window event, i redirect it to the single window).
How can i do this?
I tried to use this.browser.ScriptErrorsSuppressed = true but i doesnt seem to work.
For example, if i test it on a browser page which performs text validation, i still receive a popup window saying that my text is invalid.
Thank you!
I've found a solution somewhere else, since it wasn't available here.
Here it is: http://www.codeproject.com/Articles/31163/Suppressing-Hosted-WebBrowser-Control-Dialogs
Basically, you have to hook the WM_INITDIALOG message.
It works wonders here.
I have a webBrowser control that is used in the backend to navigate some sites. This is never actually shown to the user.
However, some sites have broken javascript and that causes a window to pop-up with the continue script or stop. The page still works, but I don't want this window to show up.
Besides removing the javascript at runtime from the page, is there anything else I can do to suppress them?
Managed to answer my own question, found on another forum.
webBrowser.ScriptErrorsSuppressed = true;
I'm trying to use the web browser control to open a url and get its HTML contents. You might ask why I'm not using the System.Net objects, the web pages are formatted through java scripts so the web browser control is the faster way but I can't seem to make it work. First, WebBrowser.Navigate won't fire when called. Please help.
BTW, I wrapped the web browser control from a class in a control library. Does web browser needs to be in a windows form type of assembly? I'm guessing that it has something to do with the message pump -- but I don't know completely. I also tried to house it in a form but still failed. Anyone's help is very much appreciated. I hope Jon Skeet can say something on this :).
Navigate is a method not an event, which event are you expecting to fire?
Yes the browser control expects a parent (otherwise it will have problems like this).
Since the browser control is also an STA component, it also expect a message pump (e.g. Application.Run( new FormMain() or formMain.ShowDialog()) in the current thread to raise events from the background thread.
See also
BUG: DocumentComplete Does Not Fire When WebBrowser Is Not Visible