Interactive UI version of whether WebView is installed and then launching installer with Admin Rights

isWebViewVersionInstalledUi.cs

        /// <summary>
        /// Helper function that checks to see if the WebView control is installed
        /// and if not prompts to install it.
        ///
        /// Should be called during app startup to ensure the WebView Runtime is available.
        /// </summary>
        /// <param name="showDownloadUi"></param>
        /// <returns></returns>
        public static bool IsWebViewVersionInstalledUi(bool showDownloadUi = false)
        {
            string versionNo = null;
            Version asmVersion = null;
            Version ver = null;

            try
            {               
                // If version no lookup or parsing fails WebView is not available
                versionNo = CoreWebView2Environment.GetAvailableBrowserVersionString();

                // strip off 'canary' or 'stable' version
                versionNo = versionNo.ExtractString("", " ", allowMissingEndDelimiter: true)?.Trim();
                ver = new Version(versionNo);

                // DEBUG: Force a version mismatch
                // ver = new Version(112, 0, 1600, 1);
                
                
                if (!mmApp.Configuration.System.IgnoreWebViewVersionMismatch)
                {
                    asmVersion = typeof(CoreWebView2Environment).Assembly.GetName().Version;
                    if (ver.Build >= asmVersion.Build)
                        return true;
                }
                else
                {
                    return true;
                }
            }
            catch(Exception ex) 
            {
                mmApp.Log($"WebView Version lookup failed. {versionNo} {asmVersion}", ex.GetBaseException(), logLevel: LogLevels.Error);
            }

            if (!showDownloadUi)
                return false;

            var result = MessageBoxResult.None;
            
            string title;
            string msg;
            if (string.IsNullOrEmpty(versionNo))
            {
                title = "WebView Runtime is not installed";
                msg = @"The WebView Runtime is not installed.
In order to use Markdown Monster you need to install the latest Microsoft WebView runtime.

We'll shut down after you made a selection. Please restart Markdown Monster when done.

Do you want to install the Edge WebView Runtime now?";
            }
            else
            {
                title = "WebView Runtime is out of Date";
                msg = $@"The WebView Runtime is older than the WebView component:

Installed Runtime Build: {ver.Build}
Required Runtime Build: {asmVersion.Build}

Do you want to want to update your installation now or continue with the outdated version?

     Note: you can override this behavior by setting this configuration value to `true`:

     System.IgnoreWebViewVersionMismatch=true
";
            }

            Task.Run(() =>
            {
                result = MessageBox.Show(
                    msg, title, MessageBoxButton.YesNo, MessageBoxImage.Information);
            });

            while (result == MessageBoxResult.None)
            {
                Thread.Sleep(100);
            }


            if (result == MessageBoxResult.Yes)
            {
                string path = System.IO.Path.Combine(App.InitialStartDirectory,
                    "BinSupport\\MicrosoftEdgeWebview2Setup.exe");
                try
                {
                    ShellUtils.ExecuteCommandLine("\"" + path +"\"", verb: "RunAs");
                    Dispatcher.CurrentDispatcher.Delay(3000, () => Environment.Exit(0));
                }
                catch(Exception ex)
                {
                    mmApp.Log("Failed to run WebViewRuntime Installer:  " + path, ex, logLevel: LogLevels.Error);
                    ShellUtils.OpenUrl(mmApp.Urls.WebViewInstallerUrl);
                }

                return false;
            }

            return true;
        }