ADO连接数据库成功了，但是就是添加不了数据，下面是我的程序：

void CWellPathDlg::OnBnClickedButtonAdd()
{
// TODO: 在此添加控件通知处理程序代码
UpdateData(true);
if(m_welldeep.IsEmpty())
{
MessageBox("井深不能为空！");
return;
}
if(m_decline.IsEmpty())
{
MessageBox("井斜角不能为空！");
return;
}
if(m_orient.IsEmpty())
{
MessageBox("方位角不能为空！");
return;
}
ADOConn m_AdoConn;
m_AdoConn.OnInitADOConn();
_bstr_t sql;
sql="selcet * from WellPath";
_RecordsetPtr m_pRecordset;
m_pRecordset=m_AdoConn.GetRecordSet(sql);
try
{
m_pRecordset->AddNew();
//m_pRecordset->PutCollect("井深",(_bstr_t)m_welldeep);
//m_pRecordset->PutCollect("井斜角",(_bstr_t)m_decline);
//m_pRecordset->PutCollect("方位角",(_bstr_t)m_orient);
m_pRecordset->GetFields()->GetItem("井深")->Value=(_bstr_t)m_welldeep;
m_pRecordset->GetFields()->GetItem("井斜角")->Value=(_bstr_t)m_decline;
m_pRecordset->GetFields()->GetItem("方位角")->Value=(_bstr_t)m_orient;
m_pRecordset->Update();
m_AdoConn.ExitConnect();
}
catch(_com_error e)
{
MessageBox("添加失败");
return;
}
MessageBox("保存成功");
m_grid_wellpath.DeleteAllItems();
AddGrid();
}