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Print preview doesn't work with images

Thread ID:





141028 Nov 19,2018 09:29 PM UTC Nov 20,2018 06:25 AM UTC UWP 1
Tags: SfReportViewer
Mursel Musabasic
Asked On November 19, 2018 09:29 PM UTC

Hi there,

I'm trying to print using built-in Print command from sfReportViewer, but on print preview page images doesn't show up. 

Here's my code:

protected override async void OnNavigatedTo(NavigationEventArgs e)

            writer.Format = BarcodeFormat.DATA_MATRIX;
            writer.Options = new DatamatrixEncodingOptions
                SymbolShape     = ZXing.Datamatrix.Encoder.SymbolShapeHint.FORCE_SQUARE,
                Height = 64,
                Width = 64,
                MaxSize = new Dimension(64, 64),
                MinSize = new Dimension(32, 32),
                GS1Format = true

            Assembly assembly = typeof(MainPage).GetTypeInfo().Assembly;
            Stream reportStream = assembly.GetManifestResourceStream("TrackAndTrace.Report3.rdlc");
            sfReport.ProcessingMode = Syncfusion.UI.Xaml.Reports.ProcessingMode.Local;
            sfReport.ExportMode = Syncfusion.UI.Xaml.Reports.ExportMode.Local;
            //sfReport.PaperOrientation = PaperOrientation.Landscape;

            ViewModel = new IzvozPodatakaViewModel(App.ViewModel.OdabraniPlan);

            await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
                AppViewModel.UcitavaSe = true;

            await ViewModel.UcitajPlanPakovanja();
            List<Task<string>> tasks = new List<Task<string>>();

            foreach (var j in ViewModel.Jedinacne)
                j.Code = await GetDMCode(j.SerijskiBroj.Replace("(", "").Replace(")", ""));

            Task task = Task.Run(()=>App.SbRepository.UpdateJedinacneAsync(ViewModel.Jedinacne));

            await task.ContinueWith(async t1 =>
                if (t1.Status == TaskStatus.RanToCompletion)
                    await sfReport.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
                        sfReport.DataSources.Add(new ReportDataSource("DataSet1", ViewModel.Jedinacne));

            await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
                AppViewModel.UcitavaSe = false;

        private async Task<byte[]> GetDMCode(string serBroj)
            WriteableBitmap bitmap = writer.Write(serBroj);
            byte[] bytes;

            using (InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream())
                BitmapEncoder bitmapEncoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, ms);
                    bitmap.PixelBuffer, BitmapPixelFormat.Bgra8, bitmap.PixelWidth, bitmap.PixelHeight));
                await bitmapEncoder.FlushAsync();
                bitmap = null;
                bytes = new byte[ms.Size];
                await ms.AsStream().ReadAsync(bytes, 0, bytes.Length);
            return bytes;

Exports work properly and images are shown without problem.

I did screenshot for better visual explanation:

Any advice?

Mageshyadav M [Syncfusion]
Replied On November 20, 2018 06:25 AM UTC

Hi Mursel,  
We were able to reproduce the print preview doesn't work with images issue and a support incident to track the status of this issue fix delivery has been created under your account. Please log on to our support website to check for further updates.   


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