How to disable WebSecurity from WPF?

[Corbie-42]

I am using CefSharp version 81.3.100.0 (x64, .Net Framework v4.5.2). There is no way I can use a more recent version in my project, so I cannot upgrade.

My goal is to enable CORS in the browser, because the websites displayed in CefSharp are calling a server, that does not send the required headers (and I can't change that too).

In a Window, I am creating embedding the browser like this:

<cefSharpWpf:ChromiumWebBrowser
        WebBrowser="{Binding Browser, Mode=OneWayToSource}"
        Address="{Binding Address, Mode=OneWay}">
    <cefSharpWpf:ChromiumWebBrowser.BrowserSettings>
        <cefSharpCore:BrowserSettings WebSecurity="Disabled"/>
    </cefSharpWpf:ChromiumWebBrowser.BrowserSettings>
</cefSharpWpf:ChromiumWebBrowser>

This initializes the browser as desired, but the BrowserSettings in the backing field are still null.

Am I missing something?

---

I have also tried initializing the ChromiumWebBrowser in the backing field, binding the Browser above in Mode=OneWay:

_browser = new ChromiumWebBrowser(Address)
{
    BrowserSettings = new BrowserSettings
    {
        WebSecurity = CefState.Disabled
    }
};

But this way the browser never properly initialized (although the website was displayed), so e.g. calling ShowDevTools on it failed:

---

Setting the command line arguments also didn't help:

var settings = new CefSettings();
settings.CefCommandLineArgs.Add("disable-web-security", "true");
Cef.Initialize(settings);

[amaitland]

My goal is to enable CORS in the browser, because the websites displayed in CefSharp are calling a server, that does not send the required headers (and I can't change that too).

Not clear what you are trying to achieve or if disabling web security is actually a solution to your problem.

This initializes the browser as desired, but the BrowserSettings in the backing field are still null.

This was fixed, you'd need a newer version to set the settings in xaml. You can set the property in code behind.

But this way the browser never properly initialized

That's not what the error is telling you at all. You need to wait until the browser has been initialized before you start calling methods on the browser. Subscribe to the listed event then call ShowDevTools.

Setting the command line arguments also didn't help:

Load chrome://version/ in a ChromiumWebBrowser instance and check the command line args, if you see --disable-web-security then the arg was passed successfully.

I am using CefSharp version 81.3.100.0 (x64, .Net Framework v4.5.2).

Not supported.