Rock.Apps.CheckScannerUtility.ScanningPage.micrImage_MicrDataReceived C# (CSharp) Méthode

        public void micrImage_MicrDataReceived( object sender, System.EventArgs e )
        {
            var currentPage = Application.Current.MainWindow.Content;

            if ( currentPage != this )
            {
                // only accept scans when the scanning page is showing
                batchPage.micrImage.ClearBuffer();
                return;
            }

            lblStartupInfo.Visibility = Visibility.Collapsed;

            // from MagTek Sample Code
            object dummy = null;
            string routingNumber = batchPage.micrImage.FindElement( 0, "T", 0, "TT", ref dummy );
            string accountNumber = batchPage.micrImage.FindElement( 0, "TT", 0, "A", ref dummy );
            string checkNumber = batchPage.micrImage.FindElement( 0, "A", 0, "12", ref dummy );
            short trackNumber = 0;
            var rawMICR = batchPage.micrImage.GetTrack( ref trackNumber );

            ScannedDocInfo scannedDoc = null;
            var rockConfig = RockConfig.Load();
            bool scanningMagTekBackImage = false;

            if ( _currentMagtekScannedDoc != null && _currentMagtekScannedDoc.BackImageData == null && rockConfig.PromptToScanRearImage )
            {
                //// if we didn't get a routingnumber, and we are expecting a back scan, use the scan as the back image
                //// However, if we got a routing number, assuming we are scanning a new check regardless
                if ( string.IsNullOrWhiteSpace( routingNumber ) )
                {
                    scanningMagTekBackImage = true;
                }
                else
                {
                    scanningMagTekBackImage = false;
                }
            }

            if ( scanningMagTekBackImage )
            {
                scannedDoc = _currentMagtekScannedDoc;
            }
            else
            {
                scannedDoc = new ScannedDocInfo();
                scannedDoc.CurrencyTypeValue = batchPage.SelectedCurrencyValue;
                scannedDoc.SourceTypeValue = batchPage.SelectedSourceTypeValue;

                if ( scannedDoc.IsCheck )
                {
                    scannedDoc.ScannedCheckMicrData = rawMICR;
                    scannedDoc.RoutingNumber = routingNumber;
                    scannedDoc.AccountNumber = accountNumber;
                    scannedDoc.CheckNumber = checkNumber;

                    WriteToDebugLog( string.Format( "[{0}] - '{1}'", DateTime.Now.ToString( "o" ), scannedDoc.ScannedCheckMicrData ) );
                }

                // set the _currentMagtekScannedDoc in case we are going to scan the back of the image
                _currentMagtekScannedDoc = scannedDoc;
            }

            string imagePath = Path.GetTempPath();
            string docImageFileName = Path.Combine( imagePath, string.Format( "scanned_item_{0}.tif", Guid.NewGuid() ) );
            if ( File.Exists( docImageFileName ) )
            {
                File.Delete( docImageFileName );
            }

            try
            {
                string statusMsg = string.Empty;
                batchPage.micrImage.TransmitCurrentImage( docImageFileName, ref statusMsg );
                if ( !File.Exists( docImageFileName ) )
                {
                    throw new Exception( "Unable to retrieve image" );
                }

                if ( scanningMagTekBackImage )
                {
                    scannedDoc.BackImageData = File.ReadAllBytes( docImageFileName );
                }
                else
                {
                    scannedDoc.FrontImageData = File.ReadAllBytes( docImageFileName );

                    // MagTek puts the symbol '?' for parts of the MICR that it can't read
                    bool gotValidMicr = !string.IsNullOrWhiteSpace( scannedDoc.AccountNumber ) && !scannedDoc.AccountNumber.Contains( '?' )
                        && !string.IsNullOrWhiteSpace( scannedDoc.RoutingNumber ) && !scannedDoc.RoutingNumber.Contains( '?' )
                        && !string.IsNullOrWhiteSpace( scannedDoc.CheckNumber ) && !scannedDoc.CheckNumber.Contains( '?' );

                    if ( scannedDoc.IsCheck && !gotValidMicr )
                    {
                        scannedDoc.BadMicr = true;
                    }
                }

                if ( scannedDoc.BackImageData == null && rockConfig.PromptToScanRearImage )
                {
                    // scanning the front image, but still need to scan the back
                    lblScanBackInstructions.Visibility = Visibility.Visible;
                    HideUploadWarningPrompts( true );
                    DisplayScannedDocInfo( scannedDoc );
                }
                else
                {
                    // scanned both sides (or just the front if they don't want to scan both sides )
                    lblScanBackInstructions.Visibility = Visibility.Collapsed;
                    scannedDoc.Upload = !scannedDoc.IsCheck || !( scannedDoc.BadMicr || scannedDoc.Duplicate );
                    this.ShowScannedDocStatusAndUpload( scannedDoc );
                }

                File.Delete( docImageFileName );
            }
            catch ( Exception ex )
            {
                if ( ex is AggregateException )
                {
                    ShowException( ( ex as AggregateException ).Flatten() );
                }
                else
                {
                    ShowException( ex );
                }
            }
            finally
            {
                batchPage.micrImage.ClearBuffer();
            }
        }