How to disable CORS in WPF WebView2

Question

I'm developing an app that displays WebView2 using .Net5/WPF.

I want to disable CORS.

I have installed Chromium Edge Canary 86.0.607.0.

In Edge, CORS could be disabled by adding the following argument to the shortcut.

--disable-web-security --user-data-dir="C://Chrome dev session"

I want to disable WebView2 as well.

Answer 1

I got an answer in this forum. Sorry, this site is in Japanese.
https://social.msdn.microsoft.com/Forums/ja-JP/9bac6d51-94eb-42c8-96f0-4081e9a4056d/wpf-webview2-cors-?forum=wpfja

It worked with the code below.
*It is necessary to set before specifying the URL in WebView2.Source.
Be careful not to specify Source on Xaml side.

    /// <summary>
    /// WPF Window Constructor
    /// </summary>
    /// <param name="url">URL</param>
    public WebViewWindow(string url)
    {
        InitializeComponent();
        // async start
        Loaded += async (_, __) => await _Routine(url);
    }

    /// <summary>
    /// task
    /// </summary>
    /// <param name="url">URL</param>
    /// <returns>task</returns>
    async Task _Routine(string url)
    {
        var localPath = Environment.GetEnvironmentVariable("LocalAppData");
        var webviewPath = $@"{localPath}\Microsoft\Edge SxS\Application\86.0.608.0";
        var userPath = "C://Chrome dev session";
        
        // Argument setting to disable COAR
        var op = new CoreWebView2EnvironmentOptions("--disable-web-security");
        
        var env = await CoreWebView2Environment.CreateAsync(webviewPath, userPath, op);
        
        await webView.EnsureCoreWebView2Async(env);
        
        if (Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out Uri? result))
        {
            webView.Source = result;
        }
    }