MicrosoftACEOLEDB12.0数据库连接字符串
Excel97-2003
Provider=Microsoft.ACE.OLEDB.12.0;DataSource=c:\myFolder\myOldExcelFile.xls;ExtendedProperties="Excel8.0;HDR=YES";
Excel2007-2013
Provider=Microsoft.ACE.OLEDB.12.0;DataSource=c:\myFolder\myExcel2007file.xlsx;ExtendedProperties="Ex