VS2010 to VS2017 Migration issue.

[Sudheer]

We are trying to upgrade our old ASP.Net application to VS2017 version and we are using some of the Syncfusion components.

Application got migrated without any compilation errors but syncfusion giving error.

FileLoadException: Could not load file or assembly 'Syncfusion.XlsIO.Base, Version=8.303.0.21, Culture=neutral

This is one of the statement from the Stack Trace. 

Could you please guide me here what exactly need to be done.

Thanks in advance.

[Prem Kumar Madhan Raj]

Hi Sudheer, 

Sorry for the inconvenience caused. 

We have checked with the reported issue and suspect that the reported issue is because of using greater framework version in the updated application to that of old application and referring the same old Syncfusion.XlsIo DLL of lower framework in the updated application. If so, then please refer the correct DLL files in your application based on the application framework which will be available in the GAC location. 

Please check the below link to refer the DLL from the GAC location. 

Link: https://help.syncfusion.com/aspnet/getting-started#referring-from-gac  

If this is not your case, then please revert back to us with below required information so that we can validate and update the exact solution to resolve this issue at your end. 

1. List of controls being used in your application.
2. Share the essential studio version details.
3. Whether Syncfusion project migration tool is being used to migrate your application.

Regards, 

Prem Kumar M