VC下ADO访问远程ORACLE数据库 收藏

 /m_strPassWord m_strPlayerName是之前定义的 
//SERVER25 是192.168.1.25上ORACLE数据库服务器的名字 
// 
/// 
BOOL CNalanElementDlg::OnInitDialog() 
{ 
 CDialog::OnInitDialog(); ................................ // 初始化COM,创建ADO连接等操作 
 AfxOleInit(); 
 return TRUE; // return TRUE unless you set the focus to a control 
} 
 
void CNalanElementDlg::OnGetPassWord() 
{ 
 CString temp; 
 _bstr_t vUsername,vPassWord; 
 try 
 { 
 HRESULT hr = m_pConnection.CreateInstance("ADODB.Connection");//创建Connection对象 
 if(SUCCEEDED(hr)) 
 { 
 m_pConnection->Open("Provider=OraOLEDB.Oracle.1;User ID=NALAN_OA;Password=NALAN_OA;Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.25)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME = SERVER25)));Persist Security Info=False","","",adOpenUnspecified); 
 } 
 } 
 catch(_com_error e)///捕捉异常 
 { 
 CString errormessage; 
 errormessage.Format("连接数据库失败!\r\n错误信息:%s",e.ErrorMessag()); 
 AfxMessageBox(errormessage);///显示错误信息 
 } 
 
 try 
 { 
 m_pRecordset.CreateInstance("ADODB.Recordset"); 
 m_pRecordset->Open("SELECT * FROM KC_ZH",(IDispatch*) m_pConnection,adOpenStatic,adLockOptimistic,adCmdText); 
 while(!m_pRecordset->adoEOF) 
 { 
 vUsername=m_pRecordset->Fields->GetItem("ACCOUNTS")->Value; 
 temp=vUsername.copy(); 
 if(temp==m_strPlayerName) 
 { 
 vPassWord=m_pRecordset->Fields->GetItem("SNAME")->Value; 
 m_strPassWord=vPassWord.copy(); 
 AfxMessageBox(m_strPassWord); 
 break; 
 } 
 m_pRecordset->MoveNext(); 
 } 
 } 
 catch(_com_error e)///捕捉异常 
 { 
 CString errormessage; 
 errormessage.Format("连接数据库失败!\r\n错误信息:%s",e.ErrorMessage()); 
 AfxMessageBox(errormessage);///显示错误信息 
 } 
 m_pRecordset->Close(); //注意！！！不要多次关闭！！！！否则会出错 
 m_pConnection->Close(); 
 m_pRecordset = NULL; 
 m_pConnection = NULL; 
}