App crashes on print after successfully saving encrypted pdf in SfPdfViewer

[Madhu Ganesh]

My app crashes with NullReferenceException at "Syncfusion.Pdf.Portable" source. StackTrace is below:

 at Syncfusion.Pdf.Primitives.PdfStream.get_Data () [0x00000] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Primitives.PdfStream.Decrypt (Syncfusion.Pdf.Security.PdfEncryptor encryptor, System.Int64 currObjNumber) [0x00012] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.IO.PdfCrossTable.Decrypt (Syncfusion.Pdf.Security.IPdfDecryptable obj) [0x00053] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.IO.PdfCrossTable.Decrypt (Syncfusion.Pdf.Primitives.IPdfPrimitive obj) [0x0004f] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.IO.PdfCrossTable.GetObject (Syncfusion.Pdf.Primitives.IPdfPrimitive pointer) [0x00139] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Parsing.PdfLoadedStateField.GetItemValue (Syncfusion.Pdf.Primitives.PdfDictionary dictionary, Syncfusion.Pdf.IO.PdfCrossTable crossTable) [0x000a7] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Parsing.PdfLoadedStateField.ApplyAppearance (Syncfusion.Pdf.Primitives.PdfDictionary widget, Syncfusion.Pdf.Parsing.PdfLoadedStateItem item) [0x0005d] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Parsing.PdfLoadedRadioButtonListField.BeginSave () [0x00039] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Parsing.PdfLoadedForm.Dictionary_BeginSave (System.Object sender, Syncfusion.Pdf.Primitives.SavePdfPrimitiveEventArgs ars) [0x001a5] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at (wrapper delegate-invoke) <Module>.invoke_void_object_SavePdfPrimitiveEventArgs(object,Syncfusion.Pdf.Primitives.SavePdfPrimitiveEventArgs)

  at Syncfusion.Pdf.Primitives.PdfDictionary.OnBeginSave (Syncfusion.Pdf.Primitives.SavePdfPrimitiveEventArgs args) [0x00018] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Primitives.PdfDictionary.Save (Syncfusion.Pdf.IO.IPdfWriter writer, System.Boolean bRaiseEvent) [0x0002c] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Primitives.PdfDictionary.Save (Syncfusion.Pdf.IO.IPdfWriter writer) [0x0001e] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.IO.PdfCrossTable.DoSaveObject (Syncfusion.Pdf.Primitives.IPdfPrimitive obj, Syncfusion.Pdf.Primitives.PdfReference reference, Syncfusion.Pdf.IO.PdfWriter writer) [0x000ae] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.IO.PdfCrossTable.SaveIndirectObject (Syncfusion.Pdf.Primitives.IPdfPrimitive obj, Syncfusion.Pdf.IO.PdfWriter writer) [0x001d7] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.IO.PdfCrossTable.SavePrimitive (Syncfusion.Pdf.Primitives.IPdfPrimitive obj, Syncfusion.Pdf.IO.PdfWriter writer) [0x0010e] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.IO.PdfCrossTable.SaveObjects (Syncfusion.Pdf.IO.PdfWriter writer) [0x00139] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.IO.PdfCrossTable.Save (Syncfusion.Pdf.IO.PdfWriter writer) [0x00367] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Parsing.PdfLoadedDocument.AppendDocument (Syncfusion.Pdf.IO.PdfWriter writer) [0x00083] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.Pdf.Parsing.PdfLoadedDocument.Save (System.IO.Stream stream) [0x004ff] in <684a4c2bcdbe48cc88eb5eed3eee485c>:0 

  at Syncfusion.SfPdfViewer.XForms.iOS.PrintService..ctor (Syncfusion.SfPdfViewer.XForms.iOS.ScrollViewEx scrollView, System.String fileName) [0x0001e] in <6c50c09a36844761b415ded21575c807>:0 

  at Syncfusion.SfPdfViewer.XForms.iOS.ScrollViewEx.Print (System.String fileName) [0x00058] in <6c50c09a36844761b415ded21575c807>:0 

  at Syncfusion.SfPdfViewer.XForms.iOS.PdfViewerDependencyService.Print (System.String fileName, System.Object nativeObject) [0x00003] in <6c50c09a36844761b415ded21575c807>:0 

  at Syncfusion.SfPdfViewer.XForms.SfPdfViewer.Print () [0x0001a] in <84ffbbdf7f22454d97d808939f778078>:0 

  at Saki.SamsTrack.Views.CompletedPdfView.AirPrint_Clicked (System.Object sender, System.EventArgs e) [0x00001] in /Users/Admin/Desktop/SamsTrack 3/src/Saki.SamsTrack.Mobile.Shared/Views/CompletedPdfView.xaml.cs:42 

  at Xamarin.Forms.Button.Xamarin.Forms.Internals.IButtonElement.PropagateUpClicked () [0x00000] in D:\a\1\s\Xamarin.Forms.Core\Button.cs:187 

  at Xamarin.Forms.ButtonElement.ElementClicked (Xamarin.Forms.VisualElement visualElement, Xamarin.Forms.Internals.IButtonElement ButtonElementManager) [0x0001f] in D:\a\1\s\Xamarin.Forms.Core\ButtonElement.cs:61 

  at Xamarin.Forms.Button.SendClicked () [0x00000] in D:\a\1\s\Xamarin.Forms.Core\Button.cs:173 

  at Xamarin.Forms.Platform.iOS.ButtonElementManager.OnButtonTouchUpInside (Xamarin.Forms.IButtonController element) [0x00009] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ButtonElementManager.cs:86 

  at Xamarin.Forms.Platform.iOS.ButtonRenderer.OnButtonTouchUpInside (System.Object sender, System.EventArgs eventArgs) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\ButtonRenderer.cs:189 

  at UIKit.UIControlEventProxy.Activated () [0x00004] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIControl.cs:38 

  at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr)

  at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:86 

  at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0000e] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:65 

  at Saki.SamsTrack.Application.Main (System.String[] args) [0x0001b] in /Users/Admin/Desktop/SamsTrack 3/src/Saki.SamsTrack.Mobile.iOS/Main.cs:20 

I use the Annotation tool on the SfPdfViewer and then click on Save from the top toolbar in the viewer and the encrypted pdf gets overwritten. Then I click on the AirPrint button and my app crashes.

I have attached the necessary files. Please let me know if you need more info.

Thank you!

Attachment: attach_6abc867f.zip

[Muralitharan Karikalan]

Hi Madhu Ganesh,  

  

Greetings from Syncfusion support,  

  

We were unable to reproduce the issue, “Application Crashes with exception while printing the encrypted document after save” and it is working as expected. Could you please try the below-provided sample and let us know whether we have missed out anything while replicating the issue.  

   

Please find the sample in the below link, which we have used to reproduce the issue in our end  

https://www.syncfusion.com/downloads/support/directtrac/general/ze/SaveAndPrint1564608189.zip 

  

Kindly share the following details to analyze more on this issue and assist you with the better solution    

1.Simple sample/ modify the above sample to reproduce the issue.   

2.Replication video/procedure to reproduce the issue.  

3.PDF document   

  

Regards,  

Muralitharan K