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How to identify a password protected excel document and provide the password dynamically?

Platform: WinForms |
Control: XlsIO |
Published Date: April 25, 2015 |
Last Revised Date: April 25, 2015

If an excel document is encrypted with a password, XlsIO supports to raise an event to provide the password dynamically. The code snippets to provide password dynamically is given below.




The sample illustrating the behavior can be downloaded here.




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Colin Hill
Nov 19, 2016
I have tried this example in my WPF project (with some small adaptations) and it does not work.

It throws {"Strong encryption algorithms are not supported."} exception and does not raise the event.

I am using version

Any advice you can give would be much appreciated.

Thank you

Patricio Venegas B
Sep 22, 2021

So.. no solution after 5 years?

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