vc++利用ado连接excel

void ConnDb()
{
_ConnectionPtr m_pConnection;
::CoInitialize(NULL);
 try{
  //创建Connection 对象
  m_pConnection.CreateInstance("ADODB.Connection");
  //设置连接字符串,必须是BSTR型或者_bstr_t类型
  _bstr_t strConnect="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=d://mydb.xls;Extended Properties=Excel 5.0;Persist Security Info=False";
  m_pConnection->Open(strConnect,"","",adModeUnknown);
   _bstr_t vInsertSql="insert into [tb2$](v1,v2) values('2','dd')";
      m_pConnection->Execute(vInsertSql,NULL,adCmdText);
   _bstr_t vCreateSql="create table tb3(id int,user_nm varchar(20))";
   m_pConnection->Execute(vCreateSql,NULL,adCmdText);
   m_pConnection->Close();
   ::CoUninitialize();
 }catch(_com_error e)   //捕捉异常
 {
  //AfxMessageBox(e.Description());
   cout< }

};

void printNun(double a[][33])
{

 for(int i=0;i<33;i++)
 {for(int j=0;j<33;j++)
   cout< cout< }

};

void ConnExcel()
{
  //添加一个指向Recordset 对象的指针
 _RecordsetPtr m_pRecordset;
 //添加一个指向Connection对象的指针
 _ConnectionPtr m_pConnection;
 double s[33][33];
 ::CoInitialize(NULL);  //初始化OLE/COM环境,为访问ADO接口做准备
 try{
  //创建Connection 对象
  m_pConnection.CreateInstance("ADODB.Connection");
  //设置连接字符串,必须是BSTR型或者_bstr_t类型
  _bstr_t strConnect="Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=d://mydb.xls";
  m_pConnection->Open(strConnect,"","",adModeUnknown);
  
 }catch(_com_error e)   //捕捉异常
 {
  //AfxMessageBox(e.Description());
   cout< }

 try{
  //添加一个指向Recordset 对象的指针
//  _RecordsetPtr m_pRecordset; 
  //创建记录集对象
  m_pRecordset.CreateInstance(_uuidof(Recordset));
  _bstr_t bstrSQL="SELECT * FROM [tb1$]";
  //取得表中的记录
  m_pRecordset->Open(bstrSQL,m_pConnection.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
        //double s[33][33];
     int j=0;
  while(m_pRecordset->adoEOF!=-1){
   for(int i=0;i<33;i++)
   {
    _variant_t vIndex = (long)i;   
    _bstr_t str=(_bstr_t) m_pRecordset->GetCollect(vIndex);
      s[j][i]=atof(str);
   }
   m_pRecordset->MoveNext();
   j++;
  }
//   printNun(s);
  //_bstr_t vInsertSql="insert into [tb2$](v1,v2) values(1,'dd')";
  //m_pConnection->Execute(vInsertSql,NULL,adCmdText);
 }catch(_com_error f)
 {
  cout< }

 //关闭记录集和连接
 if(m_pRecordset!=NULL)
  m_pRecordset->Close();
 m_pConnection->Close();
 ::CoUninitialize();
}

#include
using std::cout;
using std::endl;
#import "C:/Program Files/Common Files/System/ado/msado15.dll" no_namespace rename("EOF","adoEOF") rename("BOF","adoBOF")
//#include
//using std::setw;