Spire.XLS - Could not load file or assembly

Hi all !

I'm modifying the "famous" Excel Package in C# .NET adding some custom features ...

I added a DLL (called Spire.XLS) in the project and it works correctly in "stand alone" application


When I publish the C# I have no errors from the Integration Studio ...

When I run the page I have the following error ...

"Could not load file or assembly 'Spire.XLS, Version=, Culture=neutral, PublicKeyToken=663f351905198cb3' or one of its dependencies. The system cannot find the file specified."

Can anyone help me to find the bug ?

Thank !


Hi Luca,

I'm not familiar with that specific DLL, but are you sure the DLL has been included in your extension?


you are right ! thank you !

the files (DLL and others) were not included ... now everything works correctly !