page.extractText() throws Exception

[Jan.vanSoelen]

Hi Lisa,
Thank you for your response.
As I mentioned before our company is not allowed to share these documents.
Please note it's irrelevant that a document has special elements or structures. Seriously, your code throws exceptions like
null pointers, index out of range, stack overflow, which all are programming errors.
Please let me know whether your team can repair the code with the given stack traces in earlier posts.
Cheers
Jan

[Lisa.Li]

Hello Jan,

We understood your situation. After reviewed with our Dev team, they decide to try more investigations. Please help to provide more details of your exceptions stack traces. You can get them like attached screenshot shows, then paste the copied details in a .txt file and save it with UTF-8 to make sure there is no unknown symbol such as "?..". At the same time, please tell us the deatiled information of the dlls you used such us Spire.Pdf.Wpf.dll 5.3.8 2240 Spire.License.dll1.3.7 40, thanks in advance.

Sincerely,
Lisa
E-iceblue support team

[Jan.vanSoelen]

Hi Lisa,
See below for the requested info.
Note that the supplied stack traces earlier on are far more informative than all this info.
Please let me know if your team can repair the code.
Cheers
Jan

Application platform .Net WPF
Spire PDF Version V5.3.8
Spire PDF License Runtime Version v4.0.30319
Spire PDF License Version 1.3.7.46

The uploaded zipped folder contents:
Note 2.png - Object reference not set to an instance of an object.
Note 5.png - No FunctionType specified in function!
Note 6.png - Stack Overflow

[Lisa.Li]

Dear Jan，

Thanks for your feedback. Our Dev team need more details about your exceptions stack traces. Please refer to the attached screenshot in my previous reply to get the details of exceptions stack traces and copy them into a .txt file but not using pictures. Thanks for your cooperation.

Sincerely,
Lisa
E-iceblue support team

[Jan.vanSoelen]

Hi Lisa,
Please see earlier posts for stack traces.
Please let me know if your team can repair the code.
Cheers
Jan

[Jan.vanSoelen]

System.Transactions Critical: 0 : <TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" Severity="Critical"><TraceIdentifier>http://msdn.microsoft.com/TraceCodes/System/ActivityTracing/2004/07/Reliability/Exception/Unhandled</TraceIdentifier><Description>Unhandled exception</Description><AppDomain>dataZOEK Application.exe</AppDomain><Exception><ExceptionType>System.NullReferenceException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType><Message>Object reference not set to an instance of an object.</Message><StackTrace> at sprᥓ..ctor(spr᜴ A_0)
at sprᥒ.ᜀ(spr᜴ A_0, sprᜭ A_1)
at sprᥙ..ctor(String A_0, spr᜴ A_1, sprᥓ A_2)
at sprᤁ.ᜓ()
at sprᤁ..ctor(PdfPageBase A_0, spr᜴ A_1)
at Spire.Pdf.PdfPageBase.ᜀ(String[] A_0, Boolean A_1, spr⠋ A_2)
at Spire.Pdf.PdfPageBase.ᜀ(sprᤆ A_0, spr⠋ A_1, Boolean A_2)
at Spire.Pdf.PdfPageBase.ExtractText(Boolean keepWhiteSpace)
at Spire.Pdf.PdfPageBase.ExtractText()
at WpfApp1.PDF.Transform(Byte[] bytes, StringBuilder sb) in C:\Users\Jan\source\repos\WpfApp1\WpfApp1\PDF.cs:line 94
at WpfApp1.Processor1.run() in C:\Users\Jan\source\repos\WpfApp1\WpfApp1\Processor1.cs:line 239
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()</StackTrace><ExceptionString>System.NullReferenceException: Object reference not set to an instance of an object.
at sprᥓ..ctor(spr᜴ A_0)
at sprᥒ.ᜀ(spr᜴ A_0, sprᜭ A_1)
at sprᥙ..ctor(String A_0, spr᜴ A_1, sprᥓ A_2)
at sprᤁ.ᜓ()
at sprᤁ..ctor(PdfPageBase A_0, spr᜴ A_1)
at Spire.Pdf.PdfPageBase.ᜀ(String[] A_0, Boolean A_1, spr⠋ A_2)
at Spire.Pdf.PdfPageBase.ᜀ(sprᤆ A_0, spr⠋ A_1, Boolean A_2)
at Spire.Pdf.PdfPageBase.ExtractText(Boolean keepWhiteSpace)
at Spire.Pdf.PdfPageBase.ExtractText()
at WpfApp1.PDF.Transform(Byte[] bytes, StringBuilder sb) in C:\Users\Jan\source\repos\WpfApp1\WpfApp1\PDF.cs:line 94
at WpfApp1.Processor1.run() in C:\Users\Jan\source\repos\WpfApp1\WpfApp1\Processor1.cs:line 239
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()</ExceptionString></Exception></TraceRecord>
An unhandled exception of type 'System.NullReferenceException' occurred in Spire.Pdf.dll
Object reference not set to an instance of an object.

[Jan.vanSoelen]

System.Transactions Critical: 0 : <TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" Severity="Critical"><TraceIdentifier>http://msdn.microsoft.com/TraceCodes/System/ActivityTracing/2004/07/Reliability/Exception/Unhandled</TraceIdentifier><Description>Unhandled exception</Description><AppDomain>dataZOEK Application.exe</AppDomain><Exception><ExceptionType>System.Exception, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType><Message>No FunctionType specified in function!</Message><StackTrace> at sprᤙ.ᜀ(spr᜴ A_0)
at sprᢛ.ᜃ()
at sprᢞ.ᜂ(String A_0)
at sprᢞ.ᜀ(String[] A_0, String A_1, spr᭭ A_2)
at sprᢞ.ᜀ(Boolean A_0, Boolean A_1, List`1&amp;amp; A_2, Boolean A_3)
at sprᢕ.ᜀ(Boolean A_0, Boolean A_1, List`1&amp;amp; A_2)
at sprᢕ.ᜀ(Boolean A_0, List`1&amp;amp; A_1)
at Spire.Pdf.PdfPageBase.ᜀ(Boolean A_0, List`1&amp;amp; A_1)
at Spire.Pdf.PdfPageBase.ExtractImages(Boolean processImage)
at Spire.Pdf.PdfPageBase.ExtractImages()
at WpfApp1.PDF.Transform(Byte[] bytes, StringBuilder sb) in C:\Users\Jan\source\repos\WpfApp1\WpfApp1\PDF.cs:line 96
at WpfApp1.Processor1.run() in C:\Users\Jan\source\repos\WpfApp1\WpfApp1\Processor1.cs:line 239
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()</StackTrace><ExceptionString>System.Exception: No FunctionType specified in function!
at sprᤙ.ᜀ(spr᜴ A_0)
at sprᢛ.ᜃ()
at sprᢞ.ᜂ(String A_0)
at sprᢞ.ᜀ(String[] A_0, String A_1, spr᭭ A_2)
at sprᢞ.ᜀ(Boolean A_0, Boolean A_1, List`1&amp;amp; A_2, Boolean A_3)
at sprᢕ.ᜀ(Boolean A_0, Boolean A_1, List`1&amp;amp; A_2)
at sprᢕ.ᜀ(Boolean A_0, List`1&amp;amp; A_1)
at Spire.Pdf.PdfPageBase.ᜀ(Boolean A_0, List`1&amp;amp; A_1)
at Spire.Pdf.PdfPageBase.ExtractImages(Boolean processImage)
at Spire.Pdf.PdfPageBase.ExtractImages()
at WpfApp1.PDF.Transform(Byte[] bytes, StringBuilder sb) in C:\Users\Jan\source\repos\WpfApp1\WpfApp1\PDF.cs:line 96
at WpfApp1.Processor1.run() in C:\Users\Jan\source\repos\WpfApp1\WpfApp1\Processor1.cs:line 239
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()</ExceptionString></Exception></TraceRecord>
An unhandled exception of type 'System.Exception' occurred in Spire.Pdf.dll
No FunctionType specified in function!

[Jan.vanSoelen]

Also see stack trace details in previous post.

System.StackOverflowException
HResult=0x800703E9
Source=<Cannot evaluate the exception source>
StackTrace:
<Cannot evaluate the exception stack trace>

The maximum number of stack frames supported by Visual Studio has been exceeded.

[Jan.vanSoelen]

The stack overflow exception originates from the following line in code: foreach (PdfPageBase page in doc.Pages)

[Lisa.Li]

Hello Jan,

Thank you for providing more details. Our Dev team is deeply investigating them now. Once there is any update, we will let you know immediately. Thanks for your patience.

Sincerely,
Lisa
E-iceblue support team

[Jan.vanSoelen]

Hi Lisa,
Could you please give me a status update regarding the code repairs?
Cheers
Jan

[Lisa.Li]

Dear Jan,

Our Dev team made their efforts and did a lot of investigations, but there is still no good news yet. Their investigations are in a bind now. If you are willing to share your file, that would be great helpful. I understood your situation, but could you please try to remove the confidential data from your document, just make sure the modified file can reproduce your issues and then provide it to us? Thanks in advance.

Sincerely,
Lisa
E-iceblue support team

[Jan.vanSoelen]

Hi Lisa,
Thank you for your update. This news is highly disturbing. especially after this is going on for 2 months ..
Again, by law, we're not allowed to share these documents (with no one inside, or outside the USA).
And again the issue is not with the documents but with unsound programming in your PDF software.
Please note all 3 exceptions reported are programming and programmer errors.
Just so you know, my boss tells me the writing is on the wall and to start looking elsewhere.
One solution is you share your code with me, and I'll troubleshoot.
Cheers
Jan

[Lisa.Li]

Dear Jan,

Sorry that we can't share our code with you. Anyway, our Dev team are trying to look if there is any other solution to resolve this issue. We will keep you posted about any progress. Thanks for your understanding.

Sincerely,
Lisa
E-iceblue support team