Timothy's Space 君看一叶舟，出没风波里

_ConnectionPtr m_pConnection;
_CommandPtr m_pCommand;
.cpp中在函数中执行
//建立ado连接
HRESULT hr;
hr=m_pConnection.CreateInstance(__uuidof(Connection));
try
{
if(SUCCEEDED(hr))
{
hr=m_pConnection->Open(_bstr_t(L”Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=Viper;Data Source=Viper”),_bstr_t (L”sa”),_bstr_t (L”"),adModeUnknown);
}
}
catch(_com_error & err)
{
AfxMessageBox(err.Description(),MB_OK,0);
AfxMessageBox(err.ErrorMessage(),MB_OK,0);
AfxMessageBox(“无法连接SQL SERVER 服务器，程序将退出。请检查网络设备”,MB_OK,0);
exit(0);
}

//执行储存过程
CString cvar1,cvar2;
int cvar3;
cvar1=”ddd”;
cvar2=”";
cvar3=0;
try
{
m_pCommand.CreateInstance(__uuidof(Command));
m_pCommand->ActiveConnection=app->m_pConnection;
m_pCommand->CommandType=adCmdStoredProc;
m_pCommand->CommandText=_bstr_t(“pr_zs_dzdy”);

_variant_t vvar1,vvar2,vvar3;
vvar1=_variant_t(_bstr_t(cvar1));
vvar2=_variant_t(_bstr_t(cvar2));
vvar3=_variant_t(cvar3);
_ParameterPtr mp_var1,mp_var2,mp_var3;
mp_var1.CreateInstance(__uuidof(Parameter));
mp_var2.CreateInstance(__uuidof(Parameter));
mp_var3.CreateInstance(__uuidof(Parameter));

mp_var1=m_pCommand->CreateParameter
(
_bstr_t(“var1″),
adVarChar,
adParamInput,
3,
vvar1
);
m_pCommand->Parameters->Append(mp_var1);

mp_var2=m_pCommand->CreateParameter
(
_bstr_t(“var2″),
adVarChar,
adParamOutput,
3,
vvar2
);
m_pCommand->Parameters->Append(mp_var2);

mp_var3=m_pCommand->CreateParameter
(
_bstr_t(“var3″),
adIntger,
adParamOutput,
9,
vvar3
);
m_pCommand->Parameters->Append(mp_var3);

_variant_t vNull;
vNull.vt=VT_ERROR;
vNull.scode=DISP_E_PARAMNOTFOUND;
m_pCommand->Execute(&vNull,&vNull,adCmdStoredProc);
cvar2=mp_var2->Value.bstrVal;
cvar3=mp_var3->Value;
}
catch(_com_error &error)
{
MessageBox(error.ErrorMessage(),”ADO错误!”);
MessageBox(error.Description(),”ADO错误!”);
}

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