Rock.Apps.CheckScannerUtility.BatchPage.LoadFinancialBatchesGrid C# (CSharp) Méthode

        public void LoadFinancialBatchesGrid()
        {
            RockConfig config = RockConfig.Load();
            RockRestClient client = new RockRestClient( config.RockBaseUrl );
            client.Login( config.Username, config.Password );
            List<FinancialBatch> pendingBatches = client.GetDataByEnum<List<FinancialBatch>>( "api/FinancialBatches", "Status", BatchStatus.Pending );

            // Order by Batch Id starting with most recent
            grdBatches.DataContext = pendingBatches.OrderByDescending( a => a.Id );
            if ( pendingBatches.Count > 0 )
            {
                if ( SelectedFinancialBatch != null )
                {
                    // try to set the selected batch in the grid to our current batch (if it still exists in the database)
                    grdBatches.SelectedValue = pendingBatches.FirstOrDefault( a => a.Id.Equals( SelectedFinancialBatch.Id ) );
                }

                // if there still isn't a selected batch, set it to the first one
                if ( grdBatches.SelectedValue == null )
                {
                    grdBatches.SelectedIndex = 0;
                }
            }
            else
            {
                SelectedFinancialBatch = null;
            }

            bool startWithNewBatch = !pendingBatches.Any();
            if ( startWithNewBatch )
            {
                // don't let them start without having at least one batch, so just show the list with the Add button
                HideBatch();
            }
            else
            {
                gBatchDetailList.Visibility = Visibility.Visible;
            }
        }

        /// <summary>
        /// Handles the Click event of the btnLogin control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="RoutedEventArgs"/> instance containing the event data.</param>
        private void btnLogin_Click(object sender, RoutedEventArgs e)
        {
            lblLoginWarning.Visibility = Visibility.Hidden;
            txtUsername.Text           = txtUsername.Text.Trim();
            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 = "https://" + rockUrl.AbsoluteUri;
            }

            RockRestClient rockRestClient = new RockRestClient(txtRockUrl.Text);

            string userName = txtUsername.Text;
            string password = txtPassword.Password;

            if (string.IsNullOrWhiteSpace(userName))
            {
                lblLoginWarning.Content    = "Username cannot be blank";
                lblLoginWarning.Visibility = Visibility.Visible;
                return;
            }

            // start a background thread to Login since this could take a little while and we want a Wait cursor
            BackgroundWorker bw = new BackgroundWorker();

            bw.DoWork += delegate(object s, DoWorkEventArgs ee)
            {
                ee.Result = null;
                rockRestClient.Login(userName, password);
            };

            // when the Background Worker is done with the Login, run this
            bw.RunWorkerCompleted += delegate(object s, RunWorkerCompletedEventArgs ee)
            {
                this.Cursor        = null;
                btnLogin.IsEnabled = true;
                try
                {
                    if (ee.Error != null)
                    {
                        throw ee.Error;
                    }

                    Person     person     = rockRestClient.GetData <Person>(string.Format("api/People/GetByUserName/{0}", userName));
                    RockConfig rockConfig = RockConfig.Load();
                    rockConfig.RockBaseUrl = txtRockUrl.Text;
                    rockConfig.Username    = txtUsername.Text;
                    rockConfig.Password    = txtPassword.Password;
                    rockConfig.Save();

                    BatchPage batchPage = new BatchPage(person);

                    if (this.NavigationService.CanGoBack)
                    {
                        // if we got here from some other Page, go back
                        this.NavigationService.GoBack();
                    }
                    else
                    {
                        try
                        {
                            batchPage.LoadLookups();
                            batchPage.LoadFinancialBatchesGrid();
                        }
                        catch (HttpErrorException ex)
                        {
                            if (ex.Response != null && ex.Response.StatusCode.Equals(HttpStatusCode.Unauthorized))
                            {
                                lblLoginWarning.Content    = "Not Authorized for Financial Batches";
                                lblLoginWarning.Visibility = Visibility.Visible;
                                return;
                            }
                            else
                            {
                                throw ex;
                            }
                        }

                        this.NavigationService.Navigate(batchPage);
                    }
                }
                catch (WebException wex)
                {
                    // show WebException on the form, but any others should end up in the ExceptionDialog
                    HttpWebResponse response = wex.Response as HttpWebResponse;
                    if (response != null)
                    {
                        if (response.StatusCode.Equals(HttpStatusCode.Unauthorized))
                        {
                            lblLoginWarning.Content    = "Invalid Login";
                            lblLoginWarning.Visibility = Visibility.Visible;
                            return;
                        }
                    }

                    string message = wex.Message;
                    if (wex.InnerException != null)
                    {
                        message += "\n" + wex.InnerException.Message;
                    }

                    lblRockUrl.Visibility      = Visibility.Visible;
                    txtRockUrl.Visibility      = Visibility.Visible;
                    lblLoginWarning.Content    = message;
                    lblLoginWarning.Visibility = Visibility.Visible;
                    return;
                }
            };

            // set the cursor to Wait, disable the login button, and start the login background process
            this.Cursor        = Cursors.Wait;
            btnLogin.IsEnabled = false;
            bw.RunWorkerAsync();
        }