hr = m_cn->Open((_bstr_t)("Provider=SQLOLEDB;Data Source="+dserver+
";Initial Catalog="+dbase+";uid="+uid+";pwd="+pwd+";"),"","",NULL);
如果网络断开了,肯定连接不上,但会弹出断言,如何才能避免?
try{
hr = m_cn->Open((_bstr_t)("Provider=SQLOLEDB;Data Source="+dserver+
";Initial Catalog="+dbase+";uid="+uid+";pwd="+pwd+";"),"","",NULL);
}
catch(error_com e)
{
MessageBox("连接失败!");
}
这样错不能捕获。
";Initial Catalog="+dbase+";uid="+uid+";pwd="+pwd+";"),"","",NULL);
如果网络断开了,肯定连接不上,但会弹出断言,如何才能避免?
try{
hr = m_cn->Open((_bstr_t)("Provider=SQLOLEDB;Data Source="+dserver+
";Initial Catalog="+dbase+";uid="+uid+";pwd="+pwd+";"),"","",NULL);
}
catch(error_com e)
{
MessageBox("连接失败!");
}
这样错不能捕获。
{
// Exception handling.
DumpError(e);
}
try
{
}
catch(_com_error e)
{
TRACE(_T("警告: %s;\n 文件: %s; 行: %d\n"), (LPCSTR)e.Description(),__FILE__, __LINE__);
AfxMessageBox(_T((char*)e.Description()));
}
try
{
......
}
catch( _com_error e)
{
.......
}