vc数据库知识

在连接SQL数据库时，数据库的链接:

_bstr_t strConn="Provider=SQLOLEDB.1;Data Source=.;Initial Catalog=db_test;Integrated Security=SSPI;Persist Security Info=False";

_ConnectionPtr m_pConnection;

m_pConnection.CreateInstance(__uuidof(connection));

try

{

m_pConnection->Open(strConn,"sa","123",adModeUnkonwn);

}

catch(_com_error e)

{

AfxMessageBox(e.Description());

}

获得数据库的数据集：

_RecordsetPtr m_pRecordset;

m_pRecordset.CreateInstance(__uuidof(Recordset));

try

{

if(m_pConnection==NULL)

{

打开数据库;

}

m_pRecord->Open(sql,m_pConnection.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adcmdText);

}

catch(_com_error e)

{

AfxMessageBox(e.Description());

}

return m_Recordset;

相关文件下载：

/Files/yangxiaoluck/ADOS.rar