How to force ADO.Net to use only the System.String DataType in the readers TableSchema

Question

I am using an OleDbConnection to query an Excel 2007 Spreadsheet. I want force the OleDbDataReader to use only string as the column datatype.

The system is looking a

Answer 1

Note for 64bit OS it is here:

My Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Jet\4.0\Engines\Excel