c++利用ado操作excel(.xls)或(.xlsx)文件

//    ConnectionString = _T("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=");

    ConnectionString = _T("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=");
    ConnectionString += "E:\\周报\\222.xlsx";   //excel   file   name   
    //ConnectionString += _T(";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=0\"");
ConnectionString += _T(";Extended Properties=\"Excel 12.0 Xml\"");
    BSTR resultsString = ConnectionString.AllocSysString();
    pCon.CreateInstance(__uuidof(Connection));
    pCon->Open(resultsString, "", "", NULL)；

https://blog.csdn.net/kuoquan6492/article/details/84256037