ArcGISRuntime.WPF.Samples.AuthorMap.OAuthAuthorize.WebBrowserOnNavigating C# (CSharp) Метод

        void WebBrowserOnNavigating(object sender, NavigatingCancelEventArgs e)
        {
            // Check for a response to the callback url
            const string portalApprovalMarker = "/oauth2/approval";
            var webBrowser = sender as WebBrowser;
            Uri uri = e.Uri;

            // If no browser, uri, task completion source, or an empty url, return
            if (webBrowser == null || uri == null || _tcs == null || string.IsNullOrEmpty(uri.AbsoluteUri))
                return;

            // Check for redirect
            bool isRedirected = uri.AbsoluteUri.StartsWith(_callbackUrl) ||
                _callbackUrl.Contains(portalApprovalMarker) && uri.AbsoluteUri.Contains(portalApprovalMarker);

            if (isRedirected)
            {
                // If the web browser is redirected to the callbackUrl:
                //    -close the window 
                //    -decode the parameters (returned as fragments or query)
                //    -return these parameters as result of the Task
                e.Cancel = true;
                var tcs = _tcs;
                _tcs = null;
                if (_window != null)
                {
                    _window.Close();
                }

                // Call a helper function to decode the response parameters
                var authResponse = DecodeParameters(uri);

                // Set the result for the task completion source
                tcs.SetResult(authResponse);
            }
        }