Excel file Import times _ did not register the microsoft.ace.oledb.12.0 provider on the local computer

Workaround:

Resolving a microsoft.ace.oledb.12.0 provider that is not registered on the local computer when you access an Excel data source
1. Ensure the microsoft.ace.oledb.12.0 drive is installed

Http://download.microsoft.com/download/7/0/3/703ffbcb-dc0c-4e19-b0da-1463960fdcdb/AccessDatabaseEngine.exe
2, in VS right-click on the project-"attribute--" the target platform to be changed to x86

If the above two methods are still not working, use the third method

3, in the corresponding IIS application pool, set the application pool default properties right-click/Advanced Settings/enable 32-bit application, set to True.

Problem: The microsoft.ace.oledb.12.0 provider is not registered on the local computer

The error is as follows:

Excel file Import times _ did not register the microsoft.ace.oledb.12.0 provider on the local computer