Rock.Apps.StatementGenerator.OptionsPage.btnSave_Click C# (CSharp) Méthode

        private void btnSave_Click( object sender, RoutedEventArgs e )
        {
            RockConfig rockConfig = RockConfig.Load();

            try
            {
                txtRockUrl.Text = txtRockUrl.Text.Trim();
                Uri rockUrl = new Uri( txtRockUrl.Text );
                var validSchemes = new string[] { Uri.UriSchemeHttp, Uri.UriSchemeHttps };
                if ( !validSchemes.Contains( rockUrl.Scheme ) )
                {
                    txtRockUrl.Text = "http://" + rockUrl.AbsoluteUri;
                }

                RockRestClient client = new RockRestClient( txtRockUrl.Text );
                client.Login( rockConfig.Username, rockConfig.Password );
            }
            catch ( WebException wex )
            {
                HttpWebResponse response = wex.Response as HttpWebResponse;
                if ( response != null )
                {
                    if ( response.StatusCode == HttpStatusCode.Unauthorized )
                    {
                        // valid URL but invalid login, so navigate back to the LoginPage
                        rockConfig.RockBaseUrl = txtRockUrl.Text;
                        rockConfig.Save();
                        LoginPage loginPage = new LoginPage( true );
                        this.NavigationService.Navigate( loginPage );
                        return;
                    }
                }

                lblAlert.Content = wex.Message;
                lblAlert.Visibility = Visibility.Visible;
                return;
            }
            catch ( Exception ex )
            {
                lblAlert.Content = ex.Message;
                lblAlert.Visibility = Visibility.Visible;
                return;
            }

            rockConfig.RockBaseUrl = txtRockUrl.Text;
            rockConfig.LogoFile = txtLogoFile.Text;
            rockConfig.Save();

            this.NavigationService.GoBack();
        }