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vc中用ADO连接sql数据库运行时出现runtimeerror
发表在C语言图书答疑
2010-07-05
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BOOL CHotelManageSystemApp::InitInstance()
{
try//连接数据库
{
CString strConnect;
strConnect.Format("DSN=myhotel;");
if(!m_DB.OpenEx(strConnect,CDatabase::useCursorLib))
{
AfxMessageBox("Unable to Connect to the Specified Data Source");
return FALSE ;
}
}
catch(CDBException *pE)//抛出异常
{
pE->ReportError();
pE->Delete();
return FALSE;
}
AfxEnableControlContainer();
// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need.
#ifdef _AFXDLL
Enable3dControls(); // Call this when using MFC in a shared DLL
#else
Enable3dControlsStatic(); // Call this when linking to MFC statically
#endif
AfxOleInit();
m_pConnection.CreateInstance(__uuidof(Connection));
// 在ADO操作中建议语句中要常用try...catch()来捕获错误信息,
//
try
{
// 打开本地数据库
// _bstr_t strconnect="Provider=MSDASQL.1;Persist Security Info=False;Data Source=myhotel";
m_pConnection->Open("Provider=MSDASQL.1;Persist Security Info=False;Data Source=myhotel","","",adModeUnknown);
//m_pConnection->Open("Provider=SQLOLEDB.1;Persist Security Info=False;Data Source=myhotel","","",adModeUnknown);
//m_pConnection->Open("Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Data Source=myhotel","","",adModeUnknown);
}
catch(_com_error *e)//抛出可能发生的异常
{
AfxMessageBox("数据库连接失败,确认数据库配置正确!");
return FALSE;
}
使用的是ODBC和ado连接数据库
编译成功 但是运行出现runtimeerror
帮忙看看
{
try//连接数据库
{
CString strConnect;
strConnect.Format("DSN=myhotel;");
if(!m_DB.OpenEx(strConnect,CDatabase::useCursorLib))
{
AfxMessageBox("Unable to Connect to the Specified Data Source");
return FALSE ;
}
}
catch(CDBException *pE)//抛出异常
{
pE->ReportError();
pE->Delete();
return FALSE;
}
AfxEnableControlContainer();
// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need.
#ifdef _AFXDLL
Enable3dControls(); // Call this when using MFC in a shared DLL
#else
Enable3dControlsStatic(); // Call this when linking to MFC statically
#endif
AfxOleInit();
m_pConnection.CreateInstance(__uuidof(Connection));
// 在ADO操作中建议语句中要常用try...catch()来捕获错误信息,
//
try
{
// 打开本地数据库
// _bstr_t strconnect="Provider=MSDASQL.1;Persist Security Info=False;Data Source=myhotel";
m_pConnection->Open("Provider=MSDASQL.1;Persist Security Info=False;Data Source=myhotel","","",adModeUnknown);
//m_pConnection->Open("Provider=SQLOLEDB.1;Persist Security Info=False;Data Source=myhotel","","",adModeUnknown);
//m_pConnection->Open("Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Data Source=myhotel","","",adModeUnknown);
}
catch(_com_error *e)//抛出可能发生的异常
{
AfxMessageBox("数据库连接失败,确认数据库配置正确!");
return FALSE;
}
使用的是ODBC和ado连接数据库
编译成功 但是运行出现runtimeerror
帮忙看看