ViewerPreLoadedImages Property

using Leadtools ;
         using Leadtools.Codecs ;
         using Leadtools.Dicom ;
         using Leadtools.MedicalViewer ;
         using Leadtools.Dicom.Scu.Common ;
         using Leadtools.ImageProcessing ;
         using Leadtools.Dicom.AddIn.Common;
         using Leadtools.Dicom.Scu;
         using Leadtools.Medical.Workstation.Client ;
         using Leadtools.Medical.Workstation.Client.Pacs ;
         using Leadtools.Medical.Workstation.Loader ;

         MedicalViewer viewer = new MedicalViewer();
         [TestMethod]
         public void LoadSeries ( ) 
         {
#if LEADTOOLS_V175_OR_LATER
            Leadtools.Examples.Support.SetLicense();
#else
            Leadtools.Examples.Support.Unlock();
#endif // #if LEADTOOLS_V175_OR_LATER

            AeInfo clientInfo = new AeInfo ( ) ;

            clientInfo.Address = Dns.GetHostName () ;
            clientInfo.Port = 1000 ;
            clientInfo.AETitle = "TEST_CLIENT" ;

            DicomScp serverInfo = new DicomScp ( ) ;
            serverInfo.AETitle = "LEAD_SERVER" ;
            serverInfo.Port = 104 ;
            serverInfo.PeerAddress = GetLocalServerAddress ()  ;
            serverInfo.Timeout = 30 ;

            PacsQueryClient queryClient = new PacsQueryClient ( clientInfo, serverInfo ) ;

            DicomDataSet[] queryResult =  queryClient.FindSeries ( new FindQuery ( ) ) ;

            if ( queryResult.Length > 0 ) 
            {
               PacsRetrieveClient retrieveClient = new PacsRetrieveClient(clientInfo, serverInfo);


               //make sure you have configured the workstation database correctly for the PacsRetrieveClient to store the images.
               retrieveClient.StoreRetrievedImages = true ; //we want to store the images locally so we can view them later.

               MedicalViewerLoader loader = new MedicalViewerLoader(retrieveClient );

               loader.ViewerControl = viewer ;
               loader.Layout.Auto = true ;
               loader.LazyLoading = true ; //this will cause to load the images for displayed sub-cells only
               loader.ViewerPreLoadedImages = 1; //this will allow to load 1 image after and before the displayed sub-cell for fast scrolling.

               loader.ProgressState += new ProgressEventHandler(loader_ProgressState);
               loader.RequestedImageUpdated += new EventHandler<RequestedImageUpdatedEventArgs>(loader_RequestedImageUpdated);

               string studyInstanceUID = queryResult [ 0 ].GetValue <string> ( DicomTag.StudyInstanceUID, string.Empty) ;
               string seriesInstanceUID = queryResult[ 0 ].GetValue <string> ( DicomTag.SeriesInstanceUID, string.Empty )  ;

               if ( loader.LoadSeries ( studyInstanceUID, seriesInstanceUID )  )
               {
                  Console.WriteLine ( "Number of viewer cells: {0}",  viewer.Cells.Count ) ;
                  Console.WriteLine ( "Number of loader created cells: {0}",  loader.SeriesCells.Length ) ;

                  foreach ( MedicalViewerMultiCell cell in loader.FindSeriesCells ( seriesInstanceUID ) ) 
                  {
                     string sopInstanceUID = loader.FindDisplayedCellInstanceInformation ( cell, 0 ).SOPInstanceUID ;

                     Console.WriteLine ( "Cell #{0} has first image with SOPInstanceUID={1}", viewer.Cells.IndexOf ( cell ), sopInstanceUID ) ;


                     DicomDataSet ds = loader.GetDicom ( sopInstanceUID ) ;
                     DicomElement imageElement = ds.FindFirstElement ( null, DicomTag.PixelData, true ) ;

                     if ( null != imageElement && imageElement.Length > 0 )
                     {
                        using ( RasterCodecs codec = new RasterCodecs ( ) )
                        {
                           using ( RasterImage image = ds.GetImage ( imageElement, 0, 24, RasterByteOrder.Gray, DicomGetImageFlags.AutoApplyModalityLut | DicomGetImageFlags.AutoApplyVoiLut ) )
                           {
                              codec.Save(image,Path.Combine(LEAD_VARS.ImagesDir,sopInstanceUID), RasterImageFormat.Jpeg, image.BitsPerPixel);

                              Console.WriteLine("Image with SOPInstanceUID={0} saved to {1}", sopInstanceUID,Path.Combine(LEAD_VARS.ImagesDir, sopInstanceUID));
                           }
                        }
                     }

                     string [] imagesPath = loader.GetSeriesImages ( cell ) ;

                     Console.WriteLine ( "Cell #{0} is loaded from {1} file(s):", viewer.Cells.IndexOf ( cell ), imagesPath.Length  ) ;

                     foreach ( string imagePath in imagesPath ) 
                     {
                        Console.WriteLine ( imagesPath ) ;
                     }
                  }
               }

               loader.Close ( ) ;
            }
         }

         void loader_RequestedImageUpdated(object sender, RequestedImageUpdatedEventArgs e)
         {
            Console.WriteLine ( "Image streamer for cell {0}, sub-cell {1}", viewer.Cells.IndexOf ( e.Cell ), e.SubCellIndex )  ;
         }

         void loader_ProgressState(object sender, ProgressEventArgs e)
         {
            Console.WriteLine ( e.Message ) ;
         }

         public IPAddress GetLocalServerAddress ()  
         {
            IPAddress [ ] addresses ;

            //you can use any IP address which a DICOM server is listning to.
            addresses = Dns.GetHostAddresses ( Dns.GetHostName ( ) ) ;

            foreach ( IPAddress address in addresses ) 
            {
               if ( address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork ) 
               {
                  return address ;
               }
            }

            throw new InvalidOperationException ( "No IP Address V4 found for this machine." ) ;
         }

         static class LEAD_VARS
         {
         public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
         }