Error when saving PDF file, not captured with Try/Catch

I've taken a close look at the processing and noted that the line of code:

Xamarin.Forms.DependencyService.Get().SaveAndView("Output.pdf", "application/pdf", stream);

Generates the error:

"One or more errors occurred. (/storage/emulated/0/Syncfusion/Output.pdf (No such file or directory))"

This error is not being captured by a Try/Catch  so instead of sample code I just need assistance if figuring out this error.

Hi John, 

Greetings from Syncfusion. 

We have created a simple sample to create and save PDF in Xamarin and it can be downloaded from below link: 

https://www.syncfusion.com/downloads/support/forum/145735/ze/Sample_xamarin-1505448411 

You can also find the step by step procedure for creating PDF in Xamarin below: 

https://www.syncfusion.com/kb/9174/how-to-create-a-pdf-file-in-xamarin 

Kindly refer the same and let us know if you need any further information. 

Regards, 

Surya Kumar 

I've gone completely around the problem by pushing the memory stream directly to the PDF viewer and skipping the save step.  but in doing so I noticed something strange, even though I have a community license a header appears indicating that my instance of PDF is a trial version, what gives??????

so your application on my system (VS 2019 with all of the latest updates applied) failed with these 3 errors:  also Forms.Context is obsolete, not sure what that's doing to the app and   public async Task SaveAndView(string fileName, String contentType, MemoryStream stream) throws and error as there is no await.  Does this really save to the root (  Xamarin.Forms.DependencyService.Get().SaveAndView("Output.pdf", "application/pdf", stream);)  And then attempt to read from the Assets folder.  shouldn't it be something like Xamarin.Forms.DependencyService.Get().SaveAndView("/Assets/Output.pdf", "application/pdf", stream);?

Severity Code Description Project File Line Suppression State
Error CS1566 Error reading resource 'GettingStarted.Assets.sample.pdf' -- 'Could not find file 'C:\Users\johnw\Downloads\Sample_xamarin-1505448411\Sample_xamarin\GettingStarted\GettingStarted\GettingStarted\Assets\sample.pdf'.' GettingStarted C:\Users\johnw\Downloads\Sample_xamarin-1505448411\Sample_xamarin\GettingStarted\GettingStarted\GettingStarted\CSC 1 Active

Severity Code Description Project File Line Suppression State
Error  The "LinkAssemblies" task failed unexpectedly.
System.IO.FileNotFoundException: Could not load assembly 'GettingStarted.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken='. Perhaps it doesn't exist in the Mono for Android profile?
File name: 'GettingStarted.Android.dll'
   at Java.Interop.Tools.Cecil.DirectoryAssemblyResolver.Resolve(AssemblyNameReference reference, ReaderParameters parameters)
   at Java.Interop.Tools.Cecil.DirectoryAssemblyResolver.GetAssembly(String fileName)
   at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
   at Xamarin.Android.Tasks.LinkAssemblies.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() GettingStarted.Android   

Severity Code Description Project File Line Suppression State
Error  The "ResolveLibraryProjectImports" task failed unexpectedly.
System.IO.FileNotFoundException: Could not find file 'C:\Users\johnw\Downloads\Sample_xamarin-1505448411\Sample_xamarin\GettingStarted\GettingStarted\GettingStarted\bin\Debug\netstandard2.0\GettingStarted.dll'.
File name: 'C:\Users\johnw\Downloads\Sample_xamarin-1505448411\Sample_xamarin\GettingStarted\GettingStarted\GettingStarted\bin\Debug\netstandard2.0\GettingStarted.dll'
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access)
   at Xamarin.Android.Tools.Files.HashFile(String filename, HashAlgorithm hashAlg)
   at Xamarin.Android.Tools.Files.HashFile(String filename)
   at Xamarin.Android.Tasks.ResolveLibraryProjectImports.Extract(DirectoryAssemblyResolver res, ICollection`1 jars, ICollection`1 resolvedResourceDirectories, ICollection`1 resolvedAssetDirectories, ICollection`1 resolvedEnvironments)
   at Xamarin.Android.Tasks.ResolveLibraryProjectImports.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() GettingStarted.Android   

Hi John, 

Regards, 

Sowmiya L 

Key generation does not seem to function.  I've 17.2.0.34 installed, all platforms.  Pressing the "Get License Key" does nothing.

Hi John, 

 

We have posted the response for the reported ‘license key generation not working’ issue in incident # 241596. Hence, please follow up the incident #241596 for further updates.  

 

Regards, 

Vadivel Natarajan