"End of stream reached with 3171 bytes left to read" when saving Excel file

FLX TMS FlexCel Studio for .NET
1

Hello,
Invoking the "Save" function of an "XlsFile" object generates the exception :
End of stream reached with 3171 bytes left to read
This is valid for version 7.12.1, while version 7.7.0 works

2

Hi,
This is normally a problem in how you read or write the file. Are you saving it or loading it to/from a memorystream? If so, make sure you are using MemoryString.ToArray and not .GetBuffer, since getbuffer returns grabage at the end and can cause problems like this one.

I don't think anything that could affect this has changed from 7.7 to 7.12, and I haven't had any other similar report. Maybe this could have been caused because you also upgraded the .NET framework when you upgraded FlexCel?

If you can send me a reproducible project to adrian@tmssoftware.com (or post it here), we will for sure know what happens, but if you can't, some things that could help me are:

  1. Is this a web app or winforms or something else?
  2. What version of .NET?
  3. Can you post the block of code which call Save() to see if I can detect something wrong?
3

Hello Adrian,
Thank you for your quick reply.

It is a Xamarin Forms solution.

The problem occurs during saving the Excel file.
It is working without any issue on UWP, but fails on Android and iOS projects

Please find hereby a solution that reproduces the problem
App1.zip (692.9 KB)

4

Thanks for the file, I got it and we could find the problem.
The bug happened in platforms using mono (basically ios/android), because of a workaround for a bug in those platforms.

It was fixed and 7.13 (hopefully to be released this week) will have the fix.

6

Hi,
Sorry about the delays, but FlexCel 7.13 was just released and should have this fixed